OCZ's Vertex 2 Pro Preview: The Fastest MLC SSD We've Ever Tested
by Anand Lal Shimpi on December 31, 2009 12:00 AM EST- Posted in
- Storage
The Test
I should preface the benchmarks with the following spoiler: the SandForce based OCZ Vertex 2 Pro is the fastest single-controller MLC SSD I’ve ever tested. You can post higher numbers with internally RAIDed solutions like the OCZ Colossus, but for a single drive using MLC flash - I haven’t seen anything faster than the Vertex 2 Pro.
To be honest, this was my first experience with a pre-release non-Intel SSD that went flawlessly. The Indilinx drives always had issues that had to be worked out, but SandForce is operating in a completely different class. The SF engineers and marketing folks I spoke with kept calling their technology enterprise-class. Given the crap that I’ve seen in the SSD market, I think I’d tend to agree. It just works and it seems to work well.
| CPU | Intel Core i7 965 running at 3.2GHz (Turbo & EIST Disabled) |
| Motherboard: | Intel DX58SO (Intel X58) |
| Chipset: | Intel X58 |
| Chipset Drivers: | Intel 9.1.1.1015 + Intel IMSM 8.9 |
| Memory: | Qimonda DDR3-1066 4 x 1GB (7-7-7-20) |
| Video Card: | eVGA GeForce GTX 285 |
| Video Drivers: | NVIDIA ForceWare 190.38 64-bit |
| Desktop Resolution: | 1920 x 1200 |
| OS: | Windows 7 x64 |
New vs. Used Performance - Hardly an Issue
With the X25-M G2 Intel managed to virtually eliminate the random-write performance penalty on a sequentially filled drive. In other words, if you used an X25-M G2 as a normal desktop drive, 4KB random write performance wouldn’t really degrade over time. Even without TRIM.
Intel accomplished this by doubling its external DRAM size from 16MB to 32MB and simply using more historical data in its write placement algorithms. SandForce accomplished virtually the same thing, but thanks to its write-less (DuraWrite) technology:
| OCZ Vertex 2 Pro 100GB | "New" Performance | "Used" Performance |
| 4KB Random Write | 50.9 MB/s | 45.2 MB/s |
| 2MB Sequential Write | 252 MB/s | 252 MB/s |
I saw 4KB random write speed drop from 50MB/s down to 45MB/s. Sequential write speed remained similarly untouched. But now I’ve gone and ruined the surprise.
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Wwhat - Wednesday, January 6, 2010 - link
You make a good point, and anand seems to deliberately deflect thinking about it, now you must wonder why.Anyway don't be disheartened, your point is good regardless of this support of 'magic' that anad seems to prefer over an intellectual approach.
Shining Arcanine - Thursday, December 31, 2009 - link
As far as I can tell from Anand's description of the technology, it seems that this is being done transparently to the operating system, so while the operating system thinks that 25GB have been written, the SSD knows that it only wrote 11GB. Think of it of having two balancing sheets, one that other people see that has nice figures and the other that you see which has the real figures, sort of like what Enron did, except instead of showing the better figures to everyone else when the actual figures are worse, you show the worse figures to everyone else when the actual figures are better.Anand Lal Shimpi - Thursday, December 31, 2009 - link
Data compression, deduplication, etc... are all apparently picked and used on the fly. SandForce says it's not any one algorithm but a combination of optimizations.Take care,
Anand
AbRASiON - Friday, January 1, 2010 - link
What about data reliability, compressed data can normally be a bit of an issue recovering it - any thoughts?Jenoin - Thursday, December 31, 2009 - link
Could you please post actual disk capacity used for the windows 7 and office install?The "size" vs "size on disk" of all the folders/files on the drive, (listed by windows in the properties context tab) would be interesting, to see what level of compression there is.
Thanks
Anand Lal Shimpi - Thursday, December 31, 2009 - link
Reported capacity does not change. You don't physically get more space with DuraWrite, you just avoid wasting flash erase cycles.The only way to see that 25GB of installs results in 11GB of writes is to query the controller or flash memory directly. To the end user, it looks like you just wrote 25GB of data to the drive.
Take care,
Anand
notty22 - Thursday, December 31, 2009 - link
It would be nice for the customer if OCZ did not produce multiple models with varying degrees of quality . Whether its the controller or memory , or combination thereof.
Go to Newegg glance at OCZ 60 gig ssd and greeted with this.
OCZ Agility Series OCZSSD2-1AGT60G
OCZ Core Series V2 OCZSSD2-2C60G
OCZ Vertex Series OCZSSD2-1VTX60G
OCZ Vertex OCZSSD2-1VTXA60G
OCZ Vertex Turbo OCZSSD2-1VTXT60G
OCZ Vertex EX OCZSSD2-1VTXEX60G
OCZ Solid Series OCZSSD2-1SLD60G
OCZ Summit OCZSSD2-1SUM60G
OCZ Agility EX Series OCZSSD2-1AGTEX60G
219.00 - 409.00
Low to high the way I listed them.
I can understand when some say they will wait until the
manufactures work out all the various bugs/negatives that must
be inherent in all these model/name changes.
Which model gets future technical upgrades/support ?
jpiszcz - Thursday, December 31, 2009 - link
I agree with you on that one.What we need is an SSD that beats the X25-E, so far, there is none.
BTW-- is anyone here running X25-E on enterprise severs with > 100GB/day? If so, what kind of failure rates are seen?
Lonyo - Thursday, December 31, 2009 - link
I like the idea.Given the current state of the market, their product is pretty suitable when it comes to end user patterns.
SSDs are just too expensive for mass storage, so traditional large capacity mechanical drives make more sense for your film or TV or music collection (all of which are likely to be compressed), which all the non-compressed stuff goes on your SSD for fast access.
It's god sound thinking behind it for a performance drive, although in the long run I'm not so sure the approach would always be particularly useful in a consumer oriented drive.
dagamer34 - Thursday, December 31, 2009 - link
At least for now, consumer-oriented drives aren't where the money is. Until you get 160GB drives down to $100, most consumers will call SSDs too expensive for laptop use.The nice thing about desktops though is multiple slots. 80GB is all what most people need to install an OS, a few programs, and games. Media should be stored on a separate platter-based drive anyway (or even a centralized server).