OCZ Vertex 3 Pro Preview: The First SF-2500 SSD
by Anand Lal Shimpi on February 17, 2011 3:01 AM ESTAS-SSD High Queue Depth Incompressible Sequential Performance
While ATTO shows us best case scenario for the SF-2500, AS-SSD shows us the worst case - at least for writes. The AS-SSD sequential benchmark takes place at a very high queue depth of 32 and uses incompressible data for all of its transfers. The result is a pretty big reduction in sequential write speed on SandForce based controllers.
Read speed is minimally impacted by the nature of the data. We see that at high queue depths over a 6Gbps SATA interface the Vertex 3 Pro can break 500MB/s for sequential reads. Over a 3Gbps interface the Vertex 3 Pro is mostly unimpressive, looking a lot like a C300.
The sequential write test is a tough pill to swallow for SandForce. This is truly worst case scenario performance as its high queue depth transfers of incompressible data. Admittedly the Vertex 3 Pro does much better than drives based on its former controller (SF-1200) but it's no faster than Samsung's SSD 470 and barely faster than the SSDNow V100. Over a 3Gbps interface the controller doesn't look all that great either. This is an important chart to look at if you're doing a lot of file archival on your SSD. However most usage models will see a very different performance breakdown than this. For SandForce, this is truly the worst case scenario.
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Chloiber - Thursday, February 17, 2011 - link
It's correct, Anand answered the exact same question already on page 1/2 of the comments.7Enigma - Thursday, February 17, 2011 - link
Yup, saw that on my second read through. A little clarification in the article would have made it a bit more explainable but at least the numbers are right.teldar - Thursday, February 17, 2011 - link
Hope this gets seen.I used to go to a site frequently for info on drive reliability.
storagereview.com
I don't believe its really being updated anymore. I would love to side you be able to integrate a site like theirs (or theirs completely) into here.
argosreality - Thursday, February 17, 2011 - link
They've been updating the site for the last six months or so with new reviews. Actually, they just reviewed the new Vertex2 drives with 25nm flashtomoyo - Friday, February 18, 2011 - link
Ya storagereview is quite alive now. They were dead for over a year, but I'm glad to have another good source of hdd/ssd info again.KenPC - Thursday, February 17, 2011 - link
OCZ needs a distraction - NOWSo serve up a prototype (even without a case yet) drive and get fabulous bench results and lots of press to drown out the behind the scenes downgrading of many of the on-market products.
Yes, this new controller/architecture for this particular prototype is faster. Yes, it appears to be very promising technology in the SSD space.
But now folks will be using THIS prototype review to measure the purchase decisions for drives sold months from now that may/may not have the same performance
MeSh1 - Thursday, February 17, 2011 - link
Wow, thats some tasty hardware :). 400GB @ $1350. The Revo X22 480GB is just under that, hmm..... decisions. Revo Drive uses SF1200 I wonder if they can slap a SF200 on the Revo :)Breit - Friday, February 18, 2011 - link
you can bet on that. ocz will definitely roll out a new revodrive with sf2000 on it when the time comes, trust me. :)geniekid - Thursday, February 17, 2011 - link
Don't know if anyone from AT will get this far in the comments, but...1) I like how the beginning of the article rehashes how SSDs work instead of linking back to earlier articles. The redundancy makes it a lot easier to read the article.
2) I think the real world usage of these things is invaluable. Theoretical limits almost never ever mirror real world usage. *Thumbs up*
TrackSmart - Friday, February 18, 2011 - link
I agree completely on the REAL WORLD tests. Looking at the PCMark Vantage scores, it's clear that the incredible speeds of the Vertex 3 will only yield marginal gains in *total system performance* compared to the current crop of SSDs (Agility 2, Vertex 2, etc). Hopefully the price of the new drives will be similar to the old ones. Or lower, forcing even more affordable pricing on the existing, fast-enough models.