M.2 SSDs that use SATA protocol - Why?

ZodaEX

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I'm curious what the purpose of these M.2 SSDs that just use the SATA protocol are. Why would anyone ever want one of these over a regular SATA drive, or a NVME m.2 SSD?
 

Shikami

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Think legacy, rather than modern.

Supporting protocols for NVMe, booting, and such were not implemented just exactly yet at that time. NVMe was a very recent thing actually. However, SATA and routing the protocol over PCIe was easily possible at that time due to existing support structures in place. Then support ratified for NVMe and flattened out in the computer'sphere. In Windows speak we are talking 2013. Linux is around the same time with kernel 3.8, IIRC. 2011 is when ratifying began, IIRC.

NVMe spec 1.0 was released in 2013. We are with 1.4, which is a very awesome multi-core, queue, and everything else protocol. When many say "you wont notice a difference" they are not really seeing the whole picture in which the change in how data I/O just exploded there. They also probably didn't use SCSI, or both ISA 14, 15 IRQ's to increase paging I/O back in the NT days. Honestly, you can tell who knows hardware or not, by the shitty "generalizations" made. To put it into perspective, you are starting to see what NVMe can do, such as, with the recent consoles and even the new DiskStorage API. Also, with re-size BAR, you can just free-flow texture(s) in a-many-a GB's transfer into the frame buffer. SATA drives will not go much into the frame buffer space in one tick at around 550MB with a very capable drive. Oh, and at that very reduce latency that NVMe can provide too.
 

drescherjm

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For me between home and work I have several motherboards and laptops with some SATA only M.2 slots sometimes in addition to a NVMe + SATA M.2 slot. I have no problem buying a 1TB or 2TB SATA M.2 drive to put in that slot instead of cabling up a SATA drive and purchasing a 2.5 inch bracket. Also there used to be a larger price difference between SATA M.2 and NVMe.
 
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ZodaEX

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Shouldn't a USB 3.1 gen2 flash drive be much faster than sata3 speeds though?
 

toast0

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I'm curious what the purpose of these M.2 SSDs that just use the SATA protocol are. Why would anyone ever want one of these over a regular SATA drive, or a NVME m.2 SSD?

m.2 SATA drives are a lot smaller than regular 2.5" SATA drives (especially the 2240 drives); and the systems I use them in are tiny, and they didn't support nvme. Mostly thinking about chromebooks (before they switched to eMMC) and chromeboxes/similar. m.2 sata is way cooler than mSata too?
 

ZodaEX

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mSata? I dunno if it's cool because I've never actually heard of that. M.2 drives make me kind of nervous handling them with their bare PCB. I always worry I'll static shock them on accident.
 

OFaceSIG

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Simple, packaging. But everything is going NVME. In a few years I doubt we'll even see m.2 drives marketed anymore that aren't NVME.
 

johnrea77

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Dec 4, 2006
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I made a point to avoid SATA SSD drives on my last build. It wasn't worth the difference in cost at the time (2017). It will be the same with my next full build later this Spring.
 

ZodaEX

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Silly myth. For decades that fairy tale has been told, yet I've never had an issue and I always use heavily magnetized screwdrivers. I ain't fishing out no screw that falls in an area where I can't reach unless I turn the case upside down or on its side........NO! I'm getting my magnetized screwdriver, it pulls right out with the screw on the tip.




They are, but for the price? I guess they'll never be popular, $170 for 512GB drive is too expensive. I ordered the ASUS ROG USB 3.2 enclosure and I'll pair it with an MP510 960GB (from Corsair) and see if I get even faster R/W speeds. I got lots of reasons to purposely use SATAIII drives and in enclosures as well as spare drives in my PC.
I gotta separate important files and programs, photos and videos and pr0n.

BTW, a USB 3.1 Gen2 drive can do up to 950Mb/s R/W AND my SATAIII does 450MB/s, so fast enough. Although for the ASUS ROG enclosure I ordered, it's because I got no use for the NVMe 960GB in my PC (I got a 500GB coming), otherwise, it'd disable more SATA ports which I need.
So the anti static wrist bands are just snake oil?
 

TheSlySyl

[H]ard|Gawd
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May 30, 2018
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Think mostly for notebooks. Still the dominant form factor of PCs by a huge margin, still - for some reason - wanting to become smaller and thinner.

M.2 sticks are significantly smaller than 2.5inch drives, and SATA (was) significantly cheaper than NVME.
 
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