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Old May 28th 18, 12:38 AM posted to alt.comp.os.windows-10
Jimmy Wilkinson Knife
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Posts: 131
Default SATA 3.2 or nvme for an SSD?

On Mon, 28 May 2018 00:26:46 +0100, Yousuf Khan wrote:

On 5/15/2018 6:18 PM, Jimmy Wilkinson Knife wrote:
Just looked up a Samsung 960 Pro SSD, which is a lot faster. Crucial
don't seem to do nvme, and I've always used Crucial for reliability
after having 50% of OCZ drives fail. But there's no reason they can't
use SATA 3.2 for fast SSDs.


On M.2 attachments, you can have either SATA or NVMe drives. Slightly
different keyings, but they both fit in the same slot though. One is
called a B-key (SATA) and the other is an M-key (NVMe).

An M.2 B-key has the same speed as a SATA SSD, and in fact it uses the
SATA protocol too. The M.2 M-key uses the newer NVMe protocol, which
allows it to operate twice as fast as a SATA or B-key drive.

So many mfg's even if they are using an M.2 interface, they are probably
using the SATA software interface, so it's not going to be any better
than a SATA SSD. Samsung makes some of the best M-key/NVMe drives, which
really show off their value proposition over standard SATA drives which
are bottlenecked by the SATA interface.


But the SATA is NOT bottlenecked if they'd just use SATA 3.2 (emphasis on the .2).

And nvme drives are damn expensive.

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