はじめに

話題の新スペースグレーのMagic MouseとMagic Keyboardが欲しくて4,999ドルもの大金を叩きました。気前がよいAppleはなんと、タダで新iMac Pro本体を提供してくれました。さあこれを分解して、一体何がこれを動かしているのか見てみましょう。

iMac proの中身を知る前にFacebookInstagramTwitterTwitter日本語版 をフォローして最新分解ニュースを入手しましょう!

この分解は修理ガイドでは ありません。 お持ちのiMac Proを修理する際は、iFixitの修理ガイドをご利用ください。

分解するiMac Proはベースモデルです。
  • 分解するiMac Proはベースモデルです。

    • 8コア、3.2 GHz Intel Xeon W processor、Turbo Boost使用時最大4.2GHz

    • 32 GB (4 × 8 GB) 、2,666 MHz DDR4 ECCメモリ

    • AMD Radeon Pro Vega 56グラフィックプロセッサ (8 GB、HBM2メモリ搭載)

    • 27インチディスプレイ、5120 × 2880ピクセル解像度、十億色対応、広域色(P3 )

    • 1 TB SSD

  • 最大18コアを搭載したハイスペックモデルがもうすぐ発売されますーこれに使える約130万円($13,000)以上のお金があればの話ですが。

  • このユニットをテクノロジーの犠”生贄”とします…が、できれば生贄になんてしたくありません。分解した後、無事蘇ることを期待しましょう!

コメントを追加する

この輝くばかりのスペースグレイのアクセサリー(Magic Mouse, Magic Keyboard)を箱から出す瞬間がやってきました。この興奮をどうやったら収めれるでしょう。そして………!(◎_◎;)
  • この輝くばかりのスペースグレイのアクセサリー(Magic Mouse, Magic Keyboard)を箱から出す瞬間がやってきました。この興奮をどうやったら収めれるでしょう。そして………!(◎_◎;)

  • …なんと 黒色のLightning-USBケーブルが出てきました。

    • こんなことは絶対にあり得ないはずです。(今まで白しか見たことないのに)衝動が大きすぎたため作業に戻る前に、窓の外に空飛ぶ豚がいないかチェックしてみましょう。

  • 奇妙なことに、Lightning EarPodを使ってこのiMac Proにお持ちのiPhone7、8またはXを繋げるードングル(PCに繋げる小さな装置)のようなものが全く見当たりません。Appleさん、互換性のない製品が幾つも同じ会社から出てくるのは変じゃないですか?

  • iMac Proの素敵なファブリック素材を剥がして、ポート構造を見てみましょう…念のため。

Every iPhone has an adapter for that headphone jack right there on the back where it always was.

Devin - 返信

Not so, Devin. That adaptor is to plug regular headphones into an iPhone, not Lighting EarPods into a Mac, for example.

steve strike -

Don’t be the person using plug in, free EarPods on a $5000+ computer.

Frank Reedy - 返信

  • ポート接続を確認します。

    • 3.5 mmヘッドフォンジャック

    • SDXCカードスロット

    • 4つのUSB 3ポート

    • 4つのThunderbolt 3 (USB-C)ポート

    • 10 Gbイーサーネットポート

  • 少し頭をよぎった方に、このApple製品のモデル番号はA1862です。

  • 本体裏側にあるこれらのスロットにRAMを取り付けようとしましたが、どうやら無理なようです。

Hmm. Must be DDR6.

George A. - 返信

George it’s been stated: “Apple is using standard 288-pin DDR4 ECC RAM sticks”

Dan - 返信

Humor is appreciated, but sometimes not recognized…

Another Guest - 返信

Dan and George, I’m almost certain it’s DDR7. Apple would never be caught with something as outdated as DDR6 in a high-end machine like this.

Ben Lambert - 返信

If anyone happens to look back at these comments in about 2040 when DDR6/7 SDRAM is a brand-new thing, you guys are going to have them very confused.

Jeff Suovanen -

Curious about the 3.5mm jack, does it have optical support? Or can it be replaced with one that does? :)

Derek Halman - 返信

  • このモデルの開口方法はiMac 5Kと同じ方法だと賭けに出ましたーすなわち、ピザカッターがあればiMac Proは開くということです。

  • スクリーンを取り出した後、iMac Proの真っさらな内部が隅から隅まで見渡せます。欲しい人にとっては、素敵なPC用壁紙になりそうですよね?

コメントを追加する

  • この巨大なデュアルファンクーラーをまずは取り出します。

  • どうやらAppleは5Kモデルで搭載されていたフルサイズデスクトップ用ハードドライブを生贄にして、ここにスペースを作りました。(しかも、iMac Proにしてそのようなハードドライブは要らないでしょうが)

  • 他にも、冷却の神々に生贄として捧げたものは外付けRAMアクセスハッチです。残念。

  • 代わりに大きなリアベントが付いており、クーリングキャパシティーは80%も増大しました。

Compared to a Tower-Workstation the cooling solution is tiny for a 120-140 W TDP Xeon and a 175W Vega 56 PRO ?!

Animarkzero ‍ ‎‎ - 返信

One of the challenges here is that the very very tiny and supremely delicate wire connectors are super easy to damage. Terrible design. Not something I would ever try again.

heywardjr - 返信

  • AirPortカード機能は、理由は分かりませんがメインボード上に搭載されています。Appleは5Kモデル以降モジュールを廃止しました。しかし同軸ケーブル用の風変わりな新固定クリップがあります。

  • 電源は1つでもなく、2つでもなく、トルクスネジで固定された4つの輝く端末を経由して基板に繋がっています。

At least the coax connectors won’t pop off ;-} Not that they tended to do so this is over kill.

Dan - 返信

@sam - Could use a second image showing the other two PS connections to the logic board.

Dan - 返信

Those other two are easy to slide out.

heywardjr - 返信

There are quite a few screws to remove to get the motherboard out. Getting the board out means tilting it to the right as you gentlybslide it out. It tough as the usb and thunderbolt ports are right there. I ended up damaging the ethernet port doing this piece. Would never do this again! I highly recommend not doing this upgrade yourself. I had to take the unit back to the reseller and get it repaired under the $129 extra I paid for accidental damage. This operation completely voids the Apple warranty according to the reseller because you remove the motherboard they will know because of the non Apple ram.

heywardjr - 返信

  • ボードを取り出して、まず最初にRAMの点検に取り掛かりましょう。

  • どうもこうもありません。RAMにアクセスするにはこの方法しかないのです。前モデル27インチ iMacシリーズの背面に搭載されていたRAMにアクセスするためのシンプルなハッチに比べると、このRAMに到達するまでが大変な作業です。

  • とは言うものの、グッドニュースがあります。これらは288-pin DDR4 ECC RAMスティックが使用されており、標準型チップオンボードです。

  • 今この場でアップグレードできるので、グズグズしないでやってみましょう。4つの32GBモジュールが”最高高高”の計128 GBを可能にするのはいかがですか?

  • 素早くデバイスを再組み立てした後、このアップグレードは上出来と結果をお知らせします。ご自宅でアップグレードを実行される場合は、Memory Maxxer RAM アップグレードキットを入手してください。

Any idea what the far right RAM module black label (shield) is for? It doesn’t look like it offers much as its not tied to chassis ground.

Dan - 返信

Heatpipes are on TOP! of thermal block? Half the pipe is cooling the air instead of the processor?!

Are Apple Engineers mildly stupid or did they have other problems or was this the cheapest solution?

If you take a look at any good custom CPU-cooler the heat-pipes are touching the Heatspreader directly for a reason.

Animarkzero ‍ ‎‎ - 返信

  • さて本題の分解に戻りましょう。つぎはツインのSSDです。

  • ステッカーを幾つか剥がすと、トルクスネジが出てきました。これを外します!

  • 各SSDは Apple EMC 3197のモデル 656-0061Aとデザインされています。

  • シールドを外すとチップが幾つか確認できます。

    • SanDisk SDRQF8DC8-128G (カード1枚につき4つ搭載、2つが上部、2つが下部、合計512 GB × 2 = 1024 GB)

    • Apple 338S00285

  • コントローラー基板の付いた標準装備のSSDとは違い、これらのフラッシュモジュールにはインターフェースのバッファーが付いています。PCIe/NVMeコントローラーは別の場所に搭載されています。詳細は後で説明します。

Of course, since there is no SSD controller (see below), you can’t really call these “NVMe SSSDs”. They are flash storage devices, but they only form an “SSD” when connected to the controller, which is part of the T2. And that PCIe bus (assuming it is PCIe), is carrying data between the flash chips and the SSD controller, which means it is definitely not NVMe.

Looks like this is a new and unique Apple-designed flash memory storage system.

But one where upgrades could theoretically cost a bit less than normal, since replacement flash boards won’t require SSD controllers (assuming that custom Apple chip isn’t too horribly expensive to reverse engineer, of course).

shamino - 返信

Yes, not a NVMe/PCIe SSD drive! Just the raw flash chips in a frame. The data width is kinda narrow as well…

Still a very different design than the Function Key MacBook 13” SSD https://d3nevzfk7ii3be.cloudfront.net/ig... It’s design appeared to be a wider PCIe bus (x8).

So the question is how wide is the I/O here as that will be the limitation of how big the flash unit could be besides the limitation in the physical size. Why would Apple go with such a small footprint unit? At least make the space larger so in the future a larger unit could be put in. There’s doesn’t appear to be space to put a larger unit in

Dan - 返信

Here’s an example of a similar device “Linus TechTips: DIY SSD made of SD Cards!”: https://www.youtube.com/watch?v=3frnBoqq...

Here it’s using SD cards with a SATA controller. In the case of Apple they are using a PCIe interface via the T2

Dan - 返信

To gain speed beyond what other NVMe/PCIe SSD’s can offer, Apple interleaves across the two flash modules. Think how RAM is interleaved https://en.wikipedia.org/wiki/Interleave... Apple is using the same technique here.

Dan - 返信

  • この巨大なヒートシンクの下には何が隠れているか知りたいですか?私たちもです。トルクスネジをさらに幾つか外して、取り付け用バネを取り出すと、答えが分かります。

  • その正体はGPUですが、悲しいことにBGAが半田付けで固定されています。反対側には、半田付けされていない、”ワークステーションクラス”のXeonプロセッサーが搭載されています。

    • CPUアップグレードが出来るか出来ないか、今のところ答えは出ません。チップはIntelによってカスタムメイドされたAppleオリジナルのものです。しかし、アップグレードは少なくとも理論上は可能かもしれません。

    • あなたの50万円以上するコンピューターを古くなったら廃棄するのではなく、アップグレードできたら素晴らしいですよね?

Need safety glasses to protect your eyes from the flung screws ;-} Don’t loose them!

Dan - 返信

What socket type is the Xeon CPU? Does it have an integrated heat spreader?

Jeremy Agostino - 返信

  • 基板を取り出しました。さてチップの正体を確認する時間です。

    • Intel Xeon W-2140B (Skylake, 14 nm—発熱を管理するアンダークロックされたW-2145のよう)、最大4.2 GHzのTurbo Boost搭載3.2 GHz CPU paired with what could well be a standard LGA 2066ソケット

    • AMD S5J68 1747 GPEW0333S3 SS63HBN181747US40104 Radeon Pro Vega 56 GPU with integrated 8 GB of HBM2メモリ (on-package)

    • Intel X723D733 E1 05780 (SR3PV?) - プラットフォームコントローラーハブのよう

    • AQUANTIA AQtion AQC107-B1-C PCIe マルチギガビットイーサーネットコントローラー

    • Pericom Semiconductors PI3PCIE3412AZHE PCIE 3.0 mux/demux switch

    • Apple/Universal Scientific Industrial (USI) 339S00428 00012021 Wi-Fi/Bluetoothモジュール

    • Genesys Logic GL3227A SD 4.0 メモリカードコントローラー、Texas Instruments LP8565A13 (LEDバックライトドライバーのよう)

The Platform controller hub- if it’s the same one as other LGA2066 motherboards- I would be willing to try another LGA2066 processor if everything else checked out. Luckily I use PC which is fully upgradable.

George A. - 返信

Someone can use the board to built a super laptop. It has everything on 2 pcb. It is not even that big.

Vic Lau - 返信

ooh nice, is there a photo with the RAM and CPU populated?

(okay maybe not the CPU, that one’s easy to photoshop in)

srnblu - 返信

FoxCon assemblers are over doing the thermal paste on the GPU’s! Getting it all over the caps! I hope it’s not conductive paste!

Dan - 返信

Dan- all GPUs have way more thermal compound than needed because they don’t have an integrated heat spreader like the xeon shown earlier. It helps to cool them and conductive thermal compound isn’t used.

Calvin H -

An interesting question here related to T2 and the SSDs is why they have the Pericom PCIe mux. It seems from the earlier section that the SSD assemblies are raw flash enclosures, or perhaps at most a custom Apple chip doing Toggle to Flash and PCIe out to the T2. One possibility is that the mux allows for one SSD slot to be unpopulated— if it is empty, the mux configues 2x the PCIe lanes to the T2 from the one populated slot. Another possibility is that mux can re-route the SSDs to the Intel PCH bypassing the T2 under some circumstances. It would be interesting to follow the traces and get the block diagram of the PCH, T2, Pericom mux, and SSDs.

Mike Shapiro - 返信

Mike, The Pericom PCIe switch is more likely for the USB-C ports

Dan -

imac pro 不是万兆网卡么 千兆芯片什么鬼

张良春 - 返信

原文为PCIe to multi-gigabit ethernet controller,更正为PCIe至多千兆位以太网控制器。感谢指正!

Charles Wang -

is the chipset c422?

Aida Delmiro - 返信

  • 裏側です。

    • Cirrus Logic CS42L83 オーディオ/DAC

    • 3x Primarion PXE1110CDM 1YUS7Q84 H1746 8F4 PMC005とPrimarion PXE1610CDN 1YUS7Q84 H1745 807 PW005

    • 2x Intel JHL6540Thunderbolt 3 コントローラー

    • International Rectifiers IOR 35217-01 C740P GSGK

    • Macronix MXIC MX25L4006EZNICMOS シリアルフラッシュメモリ

    • NXP L6524 I/Oエキスパンダ

Should be Cirrus Logic CS42L83 audio/DAC

Sean Davis - 返信

How about an explanation for what a `PXE1110CDM 1YUS7Q84 H1746 8F4 PMC005` is?

michaelmiller - 返信

It is the “Digital DC-DC Multiphase Controller” solution from infineon.

https://www.infineon.com/cms/en/product/...

JJ Wu -

  • 最後のチップ情報ですが、ここで大取りです。SSDスロット付近を探ると2つのカスタム製Appleチップを見つけました。

    • SK Hynix H9HKNNNBRUMUVR-NLH LPDDR4に積層されたApple T2 339S00467

    • Apple 338S00268ーこのチップは少し謎めいています。最初、これがiPhone 7で登場した噂のA10Fusion コプロセッサだと考えていましたが、パッケージサイズが若干小さいのです。(各辺約7.4 mm) 現在の予想:これはApple/Dialog Semi パワーマネージメントICではないかと考えています。

  • Touch Bar付き2016年MacBook Proに搭載されていたT1チップの次世代T2が搭載されています。T2の役割はSMCカメラ用の全機能、イメージシグナルプロセッサ、オーディオコントロール、SSDコントローラー、Secure Enclave、ハードウェア暗号エンジン機能です。すごい!

  • この追加された機能と強化されたセキュリティのマイナスポイントはiMac Proを回復したいときに頭痛の種となります。

I believe it to be an i/o bus.

Antonio Corcella - 返信

Shouldn’t the T2 be what was rumored as A10 (iBridge)?

MrUNIMOG - 返信

  • 基板を取り出すと、500 Wのパワーサプライを外せます。

  • AcBel Polytech社による製造で、100-240ボルトACが可能で、小さなチップが搭載されています。チップ情報は以下の通りです。

    • STMicro 4NB0K 5 GK14X650

    • STMicro L6599AD B857725

    • NCP13368G PFTJ38

The unit has two power feeds one is clearly marked as 12Volts Is the other also 12Volts?

Dan - 返信

You guys should let people know not to touch the circuitry of the AC/DC PSU. There is danger in touching certain parts of the internals of PC AC/DC PSUs, even if the PSU has been left alone for a long time the capacitors could still be holding charge. Not only are you showing people how to access the PSU, but you aren’t letting them know to be extremely cautious about handling it.

Steve - 返信

You’re right about the dangers, and as stated in the banner at the top, this isn’t meant to be used as a guide. There are no instructions here and hence no guidance on what to do or not do. iFixit teardowns are a first look at the hardware and construction highlights, nothing more.

Jeff Suovanen -

  • このiMacの外殻は若干剥き出しのように見えますが、まだ作業は終わっていません。次は"増強されたステレオスピーカー"を見ていきましょう。

  • 先のレポートによると、このスピーカーは発売前の噂を裏付けできるとしています。つまり、このスピーカーはMacで聴ける最高品質の音を出します。

  • そしてこのスピーカーをHomepodとペアで繋げれるのかどうか疑問ですーもし両方を使用できれば超最高の音質になるはずです。Homepodが2018年内に発売されるのかどうか詳しいことはわかりません。(このHomepodがMac Proのように見えてくるのは偶然でしょうか?)

コメントを追加する

  • このボディをパーツに分解しました。その後はあまり残っていませんーディスプレイをサポートしている素晴らしいバネ仕掛けの蝶番が残っているぐらいです。

  • AppleのVESA Mount Adapter Kitでマウントブラケットに交換を考えている方は、Apple史上初かつ最後の認可済みiMac Proの解体の瞬間を楽しめるはずです。裏側にカードを挿入してバネを解放すると、スタンドに固定されたトルクスネジの列を発見できます。

    • おそらくこれがAppleの歴史上発売される最初で最期のトルクスネジ用ドライバーとなるでしょう。このドライバーを使って解体を指示することも今後ないでしょう。

    • もちろんですが、この分解を読んでいるあなたならお持ちですよね、準備万端のツールセット

The older 2011 iMac design foot is back!! Thank You Apple!!

Now people can pack their systems in a much smaller hard case when they need to travel with it! Or change their mind between the foot and a VESA mount going either way!

Dan - 返信

Can you use that adapter for an iMac 21.5” (2017) too?

Alfred Hansen - 返信

Sorry Guy the hinge part is internal which would need to be replaced to the other version.

Dan -

I wonder if you can order this spring mechanism as a replacement part and put it into a normal 5k 27” iMac

magnuskleditzsch - 返信

Knowing Apple I doubt it mechanically fits! We’ll need wait until we see the parts listing for the system

FYI: The current foot/VESA mounts for the 21.5 or 27” Thin Mac’s are dedicated. They are not user interchangeable like the iMac Pro!

Dan -

  • ディスプレイを詳細に見ていきましょうiMac 5Kに搭載されていたものと同じパネル(LG ディスプレイモデル番号LM270QQ1)が使用されていることが判明しました。

    • ところが、ケーブル配置やwebcamハードウェアがあちこちに散らばっていますーつまり、モデル間でのディスプレイ交換は不可能です。

  • チップを確認するため、底にシールドで隠された長いストリップを剥がします。

    • Texas Instruments NH245 8-Bit Dual-Supply Bus Transceiver

    • Texas Instruments BUF16821Programmable Gamma-Voltage GeneratorとVcom カリブレータ

    • Parade Technologies DP665 LCD Timing Controller

    • Texas InstrumentsTPS543203A synchronous step-down SWIFT™ コンバータ

    • Texas InstrumentsTPS65168High Resolution Fully Programmable LCD Bias IC for TV

コメントを追加する

  • これにて終了です。この野獣を新しい放熱グリスで再組み立てをしてから、ゲームコンソールを使ってゲームをしてみます。

  • 念のため気になった方に:再組み立ては上手くいきまた。手順毎の修理用ガイドもすぐにお届けします!

コメントを追加する

最終案
  • RAMとCPUはどちらもモジュール式です。つまり修理とアップグレードは可能です。もちろんAppleはそう言ってくれませんが。
  • デュアル SSDはモジュール式ですが、Appleによるカスタムメイドで、交換は複雑な作業です。
  • iMacを開口するためにテープを切断するのは難しくありません(適切なツールが必要です)が、修理毎にこのテープを交換しなければなりません。
  • キーとなる主要な交換用コンポーネントが基板の裏に埋められています。となるとアクセスするには多くのパーツを取り出さなければなりません。
  • 外付けRAMにアクセスするためのハッチがなくなったことから、27インチ iMac 5Kのアップグレード作業に比べると随分と困難になりました。
  • GPUはBGAに半田付けされていますーこれは"プロの"コンピューターにとって、大きなマイナスとなります。簡単にグラフィックのチップのアップグレードができません。そのため、購入時には環境設定の選択は十分考慮してください。
修理難易度スコア
3
10点満点中3点の修理難易度
(10点が最も修理しやすい指標です)

以下の翻訳者の皆さんにお礼を申し上げます:

100%

これらの翻訳者の方々は世界を修理する私たちのサポートをしてくれています。 貢献してみませんか?
翻訳を始める ›

OOH FIRST COMMENT! either way, Apples getting closer and closer to the point where a mac will literally be one single part that will not be modular in any way. Apple says they save the environment as much as possible while sweeping the fact that they make their machines as hard to fix as possible under the carpet.

Aiden Baker - 返信

Wow you got here first!

Padraic Hoselton -

Apple bounces back and forth between more and less modularity with most new architectures. Claiming that there is some obvious trend here is silly and baseless.

Mark -

Liquid cooling? SSD in RAID 0?

Peter Gamble - 返信

It’s one SSD controller on two sticks of dumb NAND, no need for a RAID.

tipoo -

Liquid cooling requires a quite grand radiator/pump ! So NO this wont be possible in this very tightly packed overheated ALL-IN-ONE-MAC(PC)!

Animarkzero ‍ ‎‎ -

What does the SSD shows at “Apple - About This Mac - System Report - Hardware - Storage?

Peter Gamble - 返信

The SSDs are hardware-encrypted by the T2. If the drive(s) are removed, the data is unreadable.

TheIronGiant - 返信

The modules are just Raw Flash it’s not a real SSD

Dan -

@Peter Gamble, probably a special controller on those things, because they didn’t find a controller for the SSD’s on the logic board.

“Conspicuously absent here is any sign of an SSD controller. More on that in a minute. “

“ The successor to the T1 chip introduced in 2016's MacBook Pro with Touch Bar, the T2 is tasked here with all the functions of the SMC, image signal processing for the camera, audio control, and SSD controller, and Secure Enclave, and a hardware encryption engine. Whew! “

Meaning that the T1 is controlling how the SSD’s send and receive data and the SSD’s are designed to work with the T1. Mind you that the T1 is an arm based co processor (if I’m not mistaken). They’ll probably do some testing but I would bet that they are not being controlled by an AHCI spec.

Nathan Lanier - 返信

No iMac Pros were harmed in the making of this teardown. :)

Gigabit87898 - 返信

I will wait for Mac Pro to come out before I pull the trigger on any of these beasts.

Rae - 返信

First teardown 2018! iFixit Lives!

George A. - 返信

Each stick of NAND not having an SSD controller validates what I was thinking. Since the T2 houses the SSD controller, calling this a RAID isn't quite right, since each drive doesn't have a controller, it's just one controller looking in two places.

tipoo - 返信

Think of it more like a bank of RAM. Each operation is bounced between the two modules (inter-leaved)

Dan -

The DIMMs (PC4-2666V-RD1-11) are not DDR4 ECC (Unbufferd) RAM, but DDR4 ECC-Registered ones.

M_Isobe - 返信

Correct! I think George was joking.

Dan -

Beautiful Teardown.

Tim Asp - 返信

I really want a iMac Pro but 21” Screen.

K Sec - 返信

“It’s one SSD controller on two sticks of dumb NAND, no need for a RAID”.

Really? Do you mean that the iMac Pro has 2.8 GB/s read & 3.3 GB/s write without RAID 0? Why not use then a single SSD blade-stick instead if two?

Peter Gamble - 返信

Think of it more like a bank of RAM. Each operation is bounced between the two modules (inter-leaved)

Dan -

Shouldn’t be much of a surprise that there’s no need for Raid 0 since standard iMac and MacBook Pro have similar Flash speeds also with a single SSD.

MrUNIMOG -

dgramatzki - The speed is much faster for both read & write on the iMac Pro’s SSD setup than what the MacBook Pro’s offer.

Dan -

Is the SSD encryption mandatory? Can it be turned off or disabled? Thanks.

Peter Gamble - 返信

Is the SSD paired to logic board? If the logic board fails, can the data in SSD be recovered? Thanks.

Peter Gamble - 返信

Is it possible to run Windows 10 via Bootcamp on it?

Hjalti á Lava - 返信

Don’t see why not!

Liam Powell -

Hi!

Maybe instead of teardown the whole iMac it would be easier to cut holes in the back around RAM?

Jaromir Kopp - 返信

I hope you’re kidding!

Dan -

Himm no A10 ARM CPU? Where the rumors false?

Skater Stimm - 返信

No iPhone APU, but the T2 chip does have a micro-controller (SMC) and also deals with encryption both functions could be run on an ARM based solution.

Dan -

The T2 might have some similarities to the A10, just as the T1 had to the Apple Watch SiPs. Perhaps that’s where the rumors came from.

MrUNIMOG -

It is so beautiful …Just black, from motherboard to RAM,from fans to speaker

iliya - 返信

Try to repair on a Black PCB….. nice eyestrain!

Animarkzero ‍ ‎‎ -

“With all that glass out of the way, we have a perfect view of the iMac Pro's pristine interior. Say, wouldn't this make a lovely wallpaper for someone?”

So do you have this pic in 5k? Or hopefully bigger to be able to crop it to 1:1.

ymppa - 返信

2 things. First off, did you guys really not think to try and replace the CPU with a standard Xeon part? Second, has anyone documented the installation of the VESA mount?

Andrew spoelstra - 返信

If you look at the VESA mount instructions that came with the Apple VESA mount for the iMac 27” 2011 its the exact same part! Apple was roasted on switching out to a fixed foot or fixed VESA mount. It took awhile!

But, I’m thinking if people really need it, one could upgrade their older 27” 2012 > 2017 models using the same parts this model has as it looks like the same mount points. Will need to double check to be sure,

Dan -

Really nothing is “Pro” in this design. Apple learned nothing. They want to continue to sell their super proprietary nonsense hardware. As a pro, you expect easy exchangeable, compatible components, like RAM, CPU, GPU, harddrives, and PCIe-slots, 2 x 16x, etc. In the highest available standards. The new Mac”Pro” just is the new regular iMac. I bet the upcoming MacPro will be a total disaster.

interference - 返信

“Pro” is not a universal term. For some users, this Mac will be great. For others, not so much. What you want and need isn’t what everyone else wants and needs.

Dongboat -

The numbers tell us it’s a more powerful box than anything Apple has produced so far. So from that perspective it’s a Pro box.

As to being the kind of box a Pro would own that gets into what his/her needs are. This system will serve many pro level user.

It still may not meet the real heavy weight users and clearly it’s a closed system with limited upgradability. That’s where the Mac Pro will be the true expandable system.

I’m hoping we see the AMD ThreadRipper CPU in it! Heavy weight pro’s need lots of threads and PCIe lanes, which is were the ThreadRipper shines!

Dan -

@DAN Threadripper has a TDP of 180W !!

How in the world do you think this will end with the Mac Pro(sumer) if Apple is not willing to cool the Xeon W in the iMac Pro properly!

Animarkzero ‍ ‎‎ -

Glad you guys got it back together! I’d hate to lose a $5K machine for no good reason :/

Liam Powell - 返信

It’s okay if it’s in the name of SCIENCE!

Kevin Stuckey -

I am curious about the SSD. I don’t like the idea of RAID-0 in a “pro” machine. Double the chance of failure, and a failure of one drive means loss of data on both. I am hoping it can be configured as two separate drives, so I can have half a TB for macOS, and half a TB for Bootcamp/Windows10/Autodesk bloatware like Revit. Curious how the inscription works in Bootcamp too. Does it require some special Windows driver for the T2 SSD controller? Mine arrived today, 2 days early, but I have no time to do more than open the brown box. Which was a mistake, because now I get to look at the picture on the inner box for three days before I can actually set it up. The agony. ;)

Also curious how soon someone with a maxed out machine breaks the screen, writes the whole thing off, and “upgrade CPU and SSD” parts are available second hand. I would assume you could even replace the MB this way to upgrade the GPU as well. It will be a niche market in a niche market, but it WILL be a market.

Gordon Price - 返信

Please, let is know if you can configure it as two separate SSD.

Peter Gamble -

You could already open another box while writing this.. :D

Igor Leskovar -

It’s not a RAID’ed drive but something similar! Think of it like how RAM inter-leaving works this is who Apple is doing it. Inter-leaving the operations across the two SSD' sets.

As for RAID the type of RAID makes a big difference! As well as what the drives are. Here using SSD’s it’s a lot more reliable than a spinning disk HDD. So if this was a RAID 0 drive I wouldn’t have a problem with it. Then there is Apple’s new file system! Which offers a better write operation so data loss is less likely. We have some large RAID 0 drive sets (all SSD’s) and they are very dependable. Our HDD RAID sets are all RAID 5 and we sync them in pairs to make sure we don’t loose anything.

Frankly, the dependability of your power will be a bigger risk! I hope you have a good back-filling UPS for your new system.

Dan -

Mini U.2 PCIe NVME SSD?

Phy Belong - 返信

Nope something new! Raw flash inter-leaved. The T2 chip manages the read/write to the modules. If you remember back in the original IBM PC day we press fitted DIP memory into sockets on the logic board. At one point we had stacked chips soldered onto each other! This is in the same approach Apple is using, just within Flash.

Dan -

Here’s a good image of these old stacked chips: https://eda360insider.files.wordpress.co...

Dan -

It is a bit sad to make a ‘PRO’ machine with an underclocked XEON to keep the temps in check.

Form over function rules at Apple

reuze - 返信

Why do you say that?

Sure the server based chips run faster but at a cost, more power is needed and heat created. The Workstation class chips make sense.

The real question is when does it throttle (load wise). If it doesn’t then Apple has found the sweet spot for this design. So we’ll need to wait for the results from people testing it out.

Sure, I think a lot of people are waiting for the other shoe to drop, the specs of the new Mac Pro!

Dan -

Um, why? How would this be any different than if they had used an overclocked version of a slower chip? The speed is what it is, carefully balanced with other system hardware.

Mark -

“Think of it more like a bank of RAM. Each operation is bounced between the two modules (inter-leaved)”.

Then it is equivalent to RAID 0 in relation to data protection: if one SSD fails, all is lost. Or if the controller chip fails. Or if the main board fails in this case, since the SSD is paired with it. You cannot take the SSD out for troubleshooting or data recovery or booting in other Mac.

Peter Gamble - 返信

This is no different than with a single-board SSD, not more points of failure than that. This isn’t hard drives where each HDD adds a spinning disk and doubles the risk of failure.

MrUNIMOG -

@dgramatzki

I see a big difference. If data is stripped between two SSD, it is like RAID 0 for data protection by definition.

Peter Gamble -

The data isn’t striped. As already alluded to, that implies to separate controllers on two separate drives. This is one controller accessing chips on two separate boards. As the previous poster pointed out, this would be no different that putting all the chips on a single board, just less flexible in terms of space. which is at a premium inside this enclosure.

Mark -

@mark

You said: "The data isn’t striped. As already alluded to, that implies to separate controllers on two separate drives. This is one controller accessing chips on two separate boards. As the previous poster pointed out, this would be no different that putting all the chips on a single board, just less flexible in terms of space. which is at a premium inside this enclosure”.

Data not stripped on SSD? Do you have a proof of that? How can it achieve 3.3GB/s write and 2.8GB/s read without RAID 0 ?

Anyway, even if data is not striped, do you mean that if one SSD fails, data can be recovered on the other? If not, it is like RAID 0 in relation to data protection.

Peter Gamble -

Interleaved flash is not the same as RAID!

There is no recovery with RAID 0, you’re thinking RAID 1 (mirroring). There is very little risk here, HDD’s are much more prone to failure than SSD’s. In any case you should have a current backup.

Dan -

Miss the “old” Mac Pro 2008-2012. Think what this mac could have been with updated hardware.

I think that Apple does not love companies and "pro". Definitively.

It's like Apple said << Long life to assembled PCs >>. OK. I will buy an assembled PC.

The Outsider - 返信

All you complainers seem not to have heard that there’s a new Mac Pro coming out some time in the future, explicitly announced by Apple to be modular and upgradeable?

MrUNIMOG -

(i am replying to ‘dgramatzki’ … )

‘The Outsider’ is talking about a beautiful modular design of more than a decade ago…

Since then nothing really happened until that round one came in 2013…

Apple is now so briljant to reinvent a modular system …. again in …. 2018?

yes there is enough to complain…

reuze -

What iMac from a decade ago had a “beautiful, modular design”?

Mark -

Thanks so much for the breakdown. Was worth reading and looking at all of the images and comments..

rickgarcia - 返信

Can’t imagine those two heat pipes having much cooling capacity. That thing is gonna overheat like a MAC mini.

Randy - 返信

Can’t imagine a pair of heat pipes having enough cooling capacity. Just have a feeling this will overheat like a MAC mini. Why don’t they ever employ some kind of self contained liquid cooler?

Randy - 返信

The old Mac pros had “self contained liquid cooler”.

https://everymac.com/images/other_images...

Christoffer Rasmussen -

Those liquid-cooled Power Mac G5 models were a nightmare. The design put the cooler right over the 1000W power supply. Then the liquid cooler started to leak. This shorted out the power supply, often killing the entire machine. Apple had a replacement program in place that if any sign of leakage was detected, they would replace the entire unit whether the customer wanted to or not. The best part was this was in the middle of the transition from PPC to Intel, so most of the customers’ pro applications were useless on the Intel Mac Pro. It was a total disaster. Liquid cooling is not a good idea in a computer case this small with a power supply this small.

Travis Funk -

As a holdout waiting for a replacement for my 2010 Mac Pro Tower I’m saddened that this all in one because I’ve have iMacs sitting in boxes because the screens were cooked along with some of the internals. My Tower has gone through 3 monitors over the years that I cheaply replaced.

wahakaa - 返信

Uh, every one of those iMacs can be repaired. What site are you on again?

Mark -

Great teardown and review.

In summary:

- One can upgrade RAM later on - saving a lot of $$ up-front. I got mine w/ 64GB - which should suffice until then.

- GPU does not matter, this one is “good enough” to be considered Pro workstation. Nothing stops one from adding another GPU via Thunderbolt 3 to PCI-e making it actually quite upgradeable (prosumers of this type of device already have a ton of storage via Thunderbolt on their desk, adding another box w/ a GPU is not a big deal)

- CPU is actually upgradeable. Sure, someone’s yet to test this but I am 99.9999% certain this is the case, so down the line in 2-3 years, pop it open, add a new-er xeon in and voila.

All in all - awesome machine. It actually replaced my whole VMware LAB, as I can now run it all on this iMac, in Fusion.

Petar Smilajkov - 返信

Just looking at the CPU speeds on the Apple site. As mentioned here, the 8 core is not the same part available to anyone from intel. It is slower. The 10 core is also slower. But the 14 and 18 core chips Apple use match the speed of what intel has on their site. The faster 8 and 10 as well as the same speed 14 and 18 all run at the same 140 Watt Total Design Power. Thus Apple may not be using the lower speed 8 and 10 core to save on heat. Apple likely has to deal with the 140W TDP of the 14 and 18.

Perhaps Apple are saving money by buying the 8/10 core chips from intel that don’t pass the first test?

Kemal NottaTurk - 返信

It would seem that way, until you consider the cache sizes.

Apple has a much bigger L3 caches than Intel offers in their Xeon Ws.

Aweizd Zsakul -

Thanks guys, What a wonderful teardown of the iMac Pro 2018. The pictures and the read was spot on and surely worth the time spent. I appreciate now, knowing what I buy, before I put down the money, and my late 2011 27” iMac needs a new partner this year.

I have planned to upgrade the memory and the SSD, but it is for sure a much greater job than upgrading the 2011 iMac. Armed with the ifixit teardown it’s time to prepare the action.

Steen Ricks Olsen - 返信

500W is far too little to host a full-fledged Xeon W and a Vega 56. I think Apple relies on thermal throttling and underclocking so performance doesn’t get “too high”. How will it ever support 18 FRICKIN’ CORES and a VEGA 64?!

Ethan Zuo - 返信

Do you know what type of Wi-Fi/Bluetooth chipset iMac Pro using?

Chen Lei - 返信

Hi, the display is definitely different than the Late 2014/2015 iMac. In that teardown, you posted an image of the model number/serial number sticker from the display. It would be much appreciated if you did the same for the iMac Pro.

Kris - 返信

Thank you Jeff, I don’t suppose you guys know where to find a spec sheet for this panel? I’m trying to understand the differences in the backlight technology between this one and the one from the 2014 model.

Kris - 返信

Unfortunately no, I haven’t seen a spec sheet anywhere as yet. There are a few prior revisions listed on public sites like Panelook, but they don’t include the iMac Pro panel… so far.

Jeff Suovanen -

Hi

What's the specifications of the motherboard of the iMac

Ntuthuko Zimu - 返信

In this configuration (motherboard to be vertical once re-assembled), would liquid metal thermal “paste” accumulate and drip down to other parts of the motherboard over time due to constant heat and gravity?

Benjamin Chen - 返信

Would have been nice to see more info on the display, just googling LG LM270QQ1 brings up -SDA2, -SDB1, -SDC1, etc.

Jake Snyder - 返信

See the first link in Step 16—the panel is labeled LM270QQ1 (SD)(D1).

Jeff Suovanen -

Technically, you could add multiple external GPUs for upgrades through the thunderbolt 3 ports

Lucas 9810 - 返信

I think Time Machine renders all of these arguments about RAID 0 and interleaving flash modules moot. For ~$100 I can have a living copy of my data that can easily be recovered to another Mac, or simply browsed by another Mac or PC with little effort. I leave a 4TB drive hanging off of my iMac 5k at all times for very little cost to me. The backup drive and the iMac are on their own over-sized UPS. All of that cost me about an extra $250. Why are you all worried about data recovery when some simple backup discipline would solve all of those problems. If you’re really a “Pro” it seems to me that you should have multiple contingencies around data loss and in the unlikely event of flash failure, you’d be fine.

Travis Funk - 返信

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