Intel SSD 750 PCIe SSD Review: NVMe for the Client
by Kristian Vättö on April 2, 2015 12:00 PM ESTSequential Read Performance
Our sequential tests are conducted in the same manner as our random IO tests. Each queue depth is tested for three minutes without any idle time in between the tests and the IOs are 4K aligned similar to what you would experience in a typical desktop OS.
In sequential read performance the SM951 keeps its lead. While the SSD 750 reaches up to 2.75GB/s at high queue depths, the scaling at small queue depths is very poor. I think this is an area where Intel should have put in a little more effort because it would translate to better performance in more typical workloads.
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Sequential Write Performance
Sequential write testing differs from random testing in the sense that the LBA span is not limited. That's because sequential IOs don't fragment the drive, so the performance will be at its peak regardless.
The SSD 750 is faster in sequential writes than the SM951, but the difference isn't all that big when you take into account that the SSD 750 has more than twice the amount of NAND. The SM951 did have some throttling issues as you can see in the graph below and I bet that with a heatsink and proper cooling the two would be quite identical because at queue depth of 1 the SSD 750 is only marginally faster. It's again a bit disappointing that the SSD 750 isn't that well optimized for sequential IO because there's prcatically no scaling at all and the drive maxes out at ~1350MB/s.
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p1esk - Friday, April 3, 2015 - link
Let me say that again: this is a consumer drive. That's why it is so cheap compared to 3700. A large Hollywood production company will surely be able to afford enough of these drives not to worry about exceeding 128TB write limits.emn13 - Saturday, April 4, 2015 - link
I'm sure they can afford it - but why pay more than necessary? Compared to the competition, this is an unusally low write endurace for such a high-end drive. Take a peek at say the 1TB 850 Pro; that's likely to be considerably cheaper (and perhaps more deserving of the "consumer" monniker), and it's NAND is rated for a little more than 6000TB of (raw) writes.128TB? That's really, really unusual for a drive like this.
earl colby pottinger - Tuesday, April 7, 2015 - link
Because that is how you run your company out of business by being cheap of key hardware.If you are producing enough 4K video to stress this drive, you are producing enough video that the cost of production is way greater that the cost of drives that you don't have to worry about this type of failure.
I have seen tons of companies go out of business or lose out on thousands of dollars in sales because they tried to save a few hundred dollars up-front against my advice.
Stop looking for cheap solutions if the storage is critical to the running of your business.
emn13 - Saturday, April 4, 2015 - link
I do a lot of large-file snapshot/restore stuff, and I definitely write a lot more than 70gb a day. Intel's own consumer level 335 was rated for 700TB, and that was a much smaller drive. More specifically, this hasn't been a problem on other drives - neither on ssd's, nor on hdds. While it's conceivable there are more efficient ways of working from the perspective of the drive, that's a hassle to arrange.Perhaps it's worth pointing you to the SSD endurance experiment: http://techreport.com/review/26523/the-ssd-enduran...
All of these drives approximately 240GB drives survived at least 700gb, and it was specifically the intel that seemingly intentionally bricked itself then.
This drive is 5 time larger, and is rated for a fraction of that. This is pretty unreasonable to my mind.
darkgreen - Thursday, April 2, 2015 - link
This part of the review made be curse:"...with the X25-M. It wasn't the first SSD on the market, but it was the first drive that delivered the aspects we now take for granted: high, consistent and reliable performance."
Arrrgh...
I was one of the early adopters who paid a ton for the XM-25. If you go back through the archives, though, you'll see Intel's XM-25 had a fragmentation bug that made it slower than a spinning platter hard drive after a bit of use. I was in that situation. Intel released a "fix" based on a script run on some old freeware, but they didn't support the fix *at all* and for many people (including me) it would never work.
So INTEL's "high, consistent and reliable performance" turned out to be total crap. I paid over $400 for what turned out to be a doorstop and had to replace it with a Corsair SSD a short time later. INTEL never offered a refund, support, or even an apology to all the people they had sold a totally nonfunctional product to. I still have that drive in my electronic junk pile and I curse INTEL every time it catches my eye.
I'm waiting for good PCIe SSD before my next PC build, unfortunately I would say INTEL products don't count because in the past we've seen (inarguably, and documented on this very site!) that they mass release buggy products and if you happen to have bought one you're just hung out to dry when they turn out to have had major design errors.
Ugh. at least mention the history here and caution people instead of suggesting Intel is reliable.
Makaveli - Thursday, April 2, 2015 - link
anecdotal evidence!!I've have two G2 160GB intel drives in Raid 0 for a couple years now and they been solid no issues.
So I disagree with your post do I win ?
darkgreen - Friday, April 3, 2015 - link
I wasn't expected that kind of reply. Google "intel replicated SSD firmware problem" (without the quotes) and you can read about the various things that happened, many of which were first reported at this very site, but I guess it WAS 6 years ago so I shouldn't expect everyone to know about it.I was running win 7 64-bit and had a G1. You'll see reports that ALL G1's had a fragmentation issue that made them slower than spinning platters after a bit of use, and you'll see mainstream media reports about how the "fix" instead bricked drives for many users on win 7 64-bit .
Not anecdotes, mainstream reporting and I was one of the thousands affected and can confirm that even after those reports Intel did nothing for non-enterprise users but delete the 50-page thread on their support site.
Kristian Vättö - Thursday, April 2, 2015 - link
To put it frankly, there's no SSD (or HDD) manufacturer that hasn't had any issues, so you might as well go back to the good ol' pen&paper if you want something truly reliable ;-)Raniz - Thursday, April 2, 2015 - link
Until the pen explodes and you have to buy a new shirtdarkgreen - Friday, April 3, 2015 - link
Agreed. In coming up with a good google search for the guy above who apparently hadn't heard about this I encountered a lot of articles about necessary firmware updates for other vendors as well. All I know is that Intel left consumers without options or replacements, I don't know what happened in all those other cases. I suppose it's a good reason to think about how important the storage division is to any company you buy from, though. Intel might, conceptually, want to support SSDs but I'd imagine all the management focus is on enterprise and processors. So who do you go with? OCZ (yikes! but maybe okay after the buyout?) Any thoughts on which companies actually value consumer purchases of their SSDs as "mission-critical" ?