The SandForce Roundup: Corsair, Kingston, Patriot, OCZ, OWC & MemoRight SSDs Compared
by Anand Lal Shimpi on August 11, 2011 12:01 AM ESTFinal Words
There really shouldn't be any surprises here. Given the same controller, the same NAND and the same firmware there's no difference between SandForce SSDs. They may look different and they may be priced differently, but they are effectively the same. So how do you pick between otherwise identical drives?
Firmware availability is an important feature. OCZ's exclusive arrangement with SandForce still gives it the advantage here. No competing SandForce drive gets firmware updates as quickly as OCZ owners. That's not always a good thing however. In the interest of pushing out fixes and improvements as quickly as possible you don't just get good firmware updates, sometimes you get updates that are best skipped. If you're the type of user that wants the latest updates as quickly as possible, OCZ is your only option.
For everyone else it looks like all of the competing drives are at least running with fairly up to date firmware revisions (either the absolute latest or one revision older than the latest). However it's unclear what the update cadence will be like going forward for these guys. The hope is that you won't need to update the firmware on your drive after you buy it, but it's clear at this point that there's still some room for compatibility improvements in the latest SandForce firmware.
The BSOD issue continues to be a significant blemish on SandForce's trackrecord. I don't have nearly enough systems deployed with SF-2281 hardware to really make any accurate statements of how widespread the issue is, but even if it is limited - it's a problem that should not exist. SandForce based drives continue to offer the best performance out of anything on the market today, not just in peak performance but in performance over time. For systems without TRIM support (e.g. Macs without the TRIM enabler) the hallmark SandForce resiliency is even more important. Unfortunately the unresolved BSOD issue makes all of these drives a risk if you don't know for sure that your system won't be affected.
The safest route without sacrificing significant performance continues to be Intel's SSD 510.
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Ipatinga - Thursday, August 11, 2011 - link
So, the Corsair Force GT is really going against OCZ Vertex 3? I thought it was agains Vertex 3 Max IOPS.In this case, the Corsair Force 3 is going after Agility 3?
And Corsair Performance 3 is going after Solid 3?
Thanks :)
Would like to hear more about NAND Flash that is Async and Sync and Toogle.
bob102938 - Thursday, August 11, 2011 - link
There are some factors that were not considered on the first page of the article. The number of dies per wafer is important, but you are forgetting the cost of producing a flash memory wafer vs a VLSI wafer. Flash memory is a ~20 layer process that has margins for error which can be worked around. VLSI is a 60+ layer process that has 0 margin for error. Producing flash memory wafers is more than an order of magnitude cheaper than producing the same-size VLSI wafer. Additionally, turnaround time on a flash wafer can be achieved in ~20 days, whereas a VLSI wafer can require 3 months.Also the internal cost of a 300mm flash memory wafer is more like $1000. A VLSI wafer is around $8000.
philosofool - Thursday, August 11, 2011 - link
I don't want to blame the victims, end users. Obviously, manufacturers have a responsibility to QA.Still, when you look at the market forces here, it seems obvious that market forces are driving the problem.
Manufacturer makes the COOL drive that gets the best performances marks of any drive out there. One year later, the COOLER drive is released. No one wants a COOL drive anymore. Plus, the margin making COOL drives is so small, you can't drop your price on a COOL drive to make it an attractive "midrange" option. So you have to start developing a new controller to make something down-right freezing.
Because there's such an emphasis on performance, controllers and the drives they run become obsolete before a water-tight reliable version of the controller can be made. Of course, they're not really obsolete--there's nothing wrong with the X-25M controller--but they can't compete in a market with drives that show twice the random read performance of an unreliable competitor.
Constant R&D on new controllers and the demand for performance mean that reliability takes a backseat. You can't sell COOL drives as long as someone makes a COOLER drive, even if cooler drives have reliability problems. Think about yourself: would you buy an X-25 M knowing that you could get a Vertex 3 instead?
Bannon - Thursday, August 11, 2011 - link
I built a system on an Asus P8Z68 Deluxe motherboard and used two Intel 510 250GB drives with it. One is the system drive and the other data drive with firmwares PWG2 and PWG4 respectively. To date I have not experienced a BSOD BUT my system drive will drop from 6Gbs to 3Gbs for no apparent reason and stay there until I power the system off. My data drive is rock solid at 6Gbs and stays there. I've just started working with Intel so I don't know where that is going to lead. Hopefully it end up with a new drive with the latest firmware and 6Gbs performance. Given my druthers I'd rather have this problem than the Sandforce BSOD's but I wanted to point out that everything isn't perfect in Intel-land.Coup27 - Thursday, August 11, 2011 - link
Anand,Can we ever expect a 470 review?
nish0323 - Thursday, August 11, 2011 - link
or am I the only one about the fact that the OWC drive is the ONLY one with a 5 year warranty on it!! That's nuts... they actually back up the claim of their SSD drive longevity by giving you such a long warranty. I love SSDs.OWC Grant - Friday, August 12, 2011 - link
Glad you noticed that warranty term because it's somewhat related to topic of this article. I've been in direct contact with Anand on this as the tone of article is all-encompassing and I wanted to shed some light on that from our perspective.While many SF based SSDs share firmware, not all hardware is the same. Our SSDs have subtle design and/or component differences which is what we feel reduces or eliminates our products susceptibility to the BSOD issue.
The honest truth is we have not been able to create a BSOD issue here with our SSDs using the same procedures that caused other brands' SSDs to experience BSOD. Nor have we received or read one direct report of such an occurrence using our drives.
And while we cut our teeth so to speak in the Mac industry, PLENTY of PC users have our SSDs in their systems...as well as that we do extensive testing on a variety of motherboards/system configs to ensure long term reliable operation.
More supportive perhaps is the fact that we've had other brand users who experienced BSOD, but after buying our SSD, they reported back that it eliminated any issues they were experiencing.
ckryan - Thursday, August 11, 2011 - link
should be getting more reliable, not less. As profit margins get slimmer and slimmer, shouldn't manufactures be producing more reliable drives? Also, Intel might be making less money per drive, but surely their enterprise sales require the same levels of validation (required previously).Conscript - Thursday, August 11, 2011 - link
am I nuts after reading multiple reviews from Anand as well as elsewhere, that I keep thinking I'm best off with a 256GB Crucial M4? I've had my 160GB X-25 for a while now, and think I'm going to hand it down to the wifey.Bannon - Thursday, August 11, 2011 - link
I had a 256GB M4 which worked fine except it would BSOD if I let my system sleep.