Low boost clocks and high temps in Cinebench

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MacBook Pro 15インチ Retina Display Late 2013

2.0GHz, 2.3GHzもしくは2.6GHzクアッドコアIntel Core i7プロセッサ (Turbo Boost 最大3.8GHz) 6MB共有L3 キャッシュ付き。

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Anri @intenditore

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投稿日: 2019年6月7日

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Low boost clocks and high temps in Cinebench

I’ve got A1398 Late 2013 with 2.6ghz i7-4960HQ. Thermal paste apparently wasn’t swapped it’s entire life. In Cinebench it was reaching 95-100 degrees and 2,8 - 2,9 clocks. CB score - 540 or even lower.

I changed the paste with Cooler Master V1 IC Value. And got… 95-100 degrees and 3.0 boost clocks AT MAX. CB score 580 0_0

This model must give about 640! What the heck is that? I didn’t make any nooble mistake I bet, I did everything right. I even reapplied the paste to be sure it’s not my fault. Nothing changed, it works slower than it must and even gets hot while FF playing video.

What could be? Never stumbled upon anything like that

Before CB:

While second run launched instantly after the first

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Lets get a better view on things here, install this app TG Pro its one of the better monitoring apps. Wen the system is idle take a snapshot of the main window, make sure you grow it so all of the sensors and fans are visible. The do a second snapshot capture just after running Cinebench. Post both here for us to see iFixitでの質問に画像を追加する方法

Dan さんによる2019年6月7日

Done

(I have to write something to make my comment longer so the site passes it :D)

Anri さんによる2019年6月7日

Your cool ;-}

Dan さんによる2019年6月7日

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Lets get a better view on things here, install this app TG Pro its one of the better monitoring apps. Wen the system is idle take a snapshot of the main window, make sure you grow it so all of the sensors and fans are visible. The do a second snapshot capture just after running Cinebench. Post both here for us to see iFixitでの質問に画像を追加する方法 — Dan
Done

(I have to write something to make my comment longer so the site passes it :D) — Anri

Dan @danj 評価: 479.9千 Self employed contract worker 35 329 971 · Answer 1 · 2019-06-07T17:35:39-07:00

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Dan @danj

評価: 479.9千

Self employed contract worker

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971

投稿日: 2019年6月7日

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OK, I think I see the issue. Note the heat pipe Outgoing Air sensors are very low in comparison to the CPU temps when you are stressing the system.

So the heatsink has failed! The coolant within the tube has leaked out. You’ll need to replace it. Keep in mind there is two versions of this system. The IG - Intergraded Graphics (Intel Iris) & DG - Dual Graphics (Intel Iris and AMD GeForce GPU. Make sure you get the correct heatsink.

The only way I know of to tell if yours is truly dead is to use a good weight scale that can measure the subtle difference of a wet Vs dry heatsink.