NVMe PCIe 3.0 SSDs fit & work in late '15 iMacs?

Apple uses a custom physical interface with their PCIe blade SSD units in the newer 'Thin Series' iMac's. The Samsung 950 Pro blade SSD conforms to the M.2 standard and will not fit.

You could swap out your current HD or add in a SSD using the SATA port the system. But to be honest I think you'll get better performance using an external Thunderbolt RAID'ed SSD drive. Which would be faster than the internal SATA port connected SSD. Besides it is less work and risk of damaging things.

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Can you suggest a Thunderbolt to NVME adapter/box?

or USB 3.1 Gen2 (10Gbps) to NVME.

tianling zhou さんによる2017年5月27日

So far I've only seen USB to M.2 SATAe cases. I don't think you'll see any M.2 NVMe external cases.

Unlike SATA which is a full interface (Phy & dialog) PCIe is not (Phy only). M.2 is a strange beast! Which makes it more complex to implement within an external dumb case. It will require some level of Phy bus driver & micro controller to emulate a PC's PCIe bus. Which could slow the I/O if it's not powerful enough and it would be costly. Look at what a Thunderbolt RAID drive case costs.

Dan さんによる2017年5月27日

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Looking at doing the same thing... (with a 512). Did you end up trying this upgrade, BB? — Squick
Can you suggest a Thunderbolt to NVME adapter/box?

or USB 3.1 Gen2 (10Gbps) to NVME. — tianling zhou
So far I've only seen USB to M.2 SATAe cases. I don't think you'll see any M.2 NVMe external cases.

Unlike SATA which is a full interface (Phy & dialog) PCIe is not (Phy only). M.2 is a strange beast! Which makes it more complex to implement within an external dumb case. It will require some level of Phy bus driver & micro controller to emulate a PC's PCIe bus. Which could slow the I/O if it's not powerful enough and it would be costly. Look at what a Thunderbolt RAID drive case costs. — Dan

iMac Intel 27インチ

NVMe PCIe 3.0 SSDs fit & work in late '15 iMacs?

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