The Intel SSD 320 Review: 25nm G3 is Finally Here
by Anand Lal Shimpi on March 28, 2011 11:08 AM EST- Posted in
- IT Computing
- Storage
- SSDs
- Intel
- Intel SSD 320
AnandTech Storage Bench 2010
To keep things consistent we've also included our older Storage Bench. Note that the old storage test system doesn't have a SATA 6Gbps controller, so we only have one result for the 6Gbps drives.
The first in our benchmark suite is a light/typical usage case. The Windows 7 system is loaded with Firefox, Office 2007 and Adobe Reader among other applications. With Firefox we browse web pages like Facebook, AnandTech, Digg and other sites. Outlook is also running and we use it to check emails, create and send a message with a PDF attachment. Adobe Reader is used to view some PDFs. Excel 2007 is used to create a spreadsheet, graphs and save the document. The same goes for Word 2007. We open and step through a presentation in PowerPoint 2007 received as an email attachment before saving it to the desktop. Finally we watch a bit of a Firefly episode in Windows Media Player 11.
There’s some level of multitasking going on here but it’s not unreasonable by any means. Generally the application tasks proceed linearly, with the exception of things like web browsing which may happen in between one of the other tasks.
The recording is played back on all of our drives here today. Remember that we’re isolating disk performance, all we’re doing is playing back every single disk access that happened in that ~5 minute period of usage. The light workload is composed of 37,501 reads and 20,268 writes. Over 30% of the IOs are 4KB, 11% are 16KB, 22% are 32KB and approximately 13% are 64KB in size. Less than 30% of the operations are absolutely sequential in nature. Average queue depth is 6.09 IOs.
The performance results are reported in average I/O Operations per Second (IOPS):
If we strip 6Gbps out of the equation completely, the SSD 320 does very well in our old light workload. You're looking at performance that's at the top of the pack from the mainstream offering.
If there’s a light usage case there’s bound to be a heavy one. In this test we have Microsoft Security Essentials running in the background with real time virus scanning enabled. We also perform a quick scan in the middle of the test. Firefox, Outlook, Excel, Word and Powerpoint are all used the same as they were in the light test. We add Photoshop CS4 to the mix, opening a bunch of 12MP images, editing them, then saving them as highly compressed JPGs for web publishing. Windows 7’s picture viewer is used to view a bunch of pictures on the hard drive. We use 7-zip to create and extract .7z archives. Downloading is also prominently featured in our heavy test; we download large files from the Internet during portions of the benchmark, as well as use uTorrent to grab a couple of torrents. Some of the applications in use are installed during the benchmark, Windows updates are also installed. Towards the end of the test we launch World of Warcraft, play for a few minutes, then delete the folder. This test also takes into account all of the disk accesses that happen while the OS is booting.
The benchmark is 22 minutes long and it consists of 128,895 read operations and 72,411 write operations. Roughly 44% of all IOs were sequential. Approximately 30% of all accesses were 4KB in size, 12% were 16KB in size, 14% were 32KB and 20% were 64KB. Average queue depth was 3.59.
Crank up the workload and the 320 falls a bit behind the rest of the competitors. Last year's heavy multitasking workload is nothing compared to what we introduced earlier this year, so it's still pretty light by comparison but it's clear for normal usage the 320's 3Gbps performance is quite good.
The gaming workload is made up of 75,206 read operations and only 4,592 write operations. Only 20% of the accesses are 4KB in size, nearly 40% are 64KB and 20% are 32KB. A whopping 69% of the IOs are sequential, meaning this is predominantly a sequential read benchmark. The average queue depth is 7.76 IOs.
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Drag0nFire - Monday, March 28, 2011 - link
I have read with interest the comments in previous SSD articles. Actually, though, I am specifically interested in the longevity characteristics of this drive being discussed today. I was surprised to see no mention in the article.If the longevity of the Intel SSD 320 has been discussed previously, I apologize for wasting your time.
Anand Lal Shimpi - Monday, March 28, 2011 - link
The 320 (as well as Crucial's m4) arrived while I was away at CTIA last week - I got back Friday morning. That gave me a minimal amount of time to get everything tested before today's NDA. As a result, about five pages got cut out of the 320 review - one of them talked about write amp and exactly what you're asking for. Soon :)Take care,
Anand
Drag0nFire - Tuesday, March 29, 2011 - link
Thanks so much. You guys are the best!Mr Perfect - Monday, March 28, 2011 - link
I'm surprised no one has mentioned the Crucial M4 (AKA C400?) numbers in the benchmarks. Is this old news, or did they just slip in there without anyone noticing. :)Termie - Monday, March 28, 2011 - link
Intel is sending around $530 300GB drives to bench against the current crop of $200 120GB drives. As Anand rightly pointed out, the 300GB drive has completely different specs than the smaller drives. Unlike SandForce, which seems to provide similar performance across sizes, Intel's new drives cannot substitute for each other in performance.I'm guessing very few people will actually buy a $530 drive at this point (even $450 was a hard sell a year ago for the 160GB G2). There are just too many $200 alternatives, and these probably significantly outperform Intel's $200 G3.
crimson117 - Monday, March 28, 2011 - link
I wish the article was a little more clear about this - the first comparison mentioned is "Intel SSD 320 300GB vs. Corsair Force F120 [120GB]" and Anand immediately concludes that it proves the Intel Controller is faster.crimson117 - Monday, March 28, 2011 - link
Note Ryan's comment in another thread:"Both the 120GB Vertex 2 and 300GB i320 are fully populated - each has all of their NAND channels in use. Intel does have a lane count advantage (10 vs. 8), but that's a design difference rather than how the SSD is populated. Thus on an architectural level it's fair to compare the controllers, as we're looking at the performance of both when they're fully populated and the architecture is not unnecessarily bottlenecked.
"Now at equal capacities this wouldn't necessarily be the case. Intel did not provide us with a smaller SSD, which is why Anand said "We also don't have a good idea of how much slower the smaller capacity drives perform in our benchmarks at this point.". It's safe to assume a 120GB i320 won't be fully populated and that it will have lower performance as a result. How much? We don't know."
tonyn84 - Monday, March 28, 2011 - link
Man, I was waiting for these to come out before trying to pick up a larger drive but there's no cost benefit. The 256gb C300 is starting to look very good, going to keep an eye on those prices now.crimson117 - Monday, March 28, 2011 - link
Anand,"all indications pointed to it being faster than drives based on SandForce's SF-1200 controller. And it is..."
Is it really fair to put a 300GB Intel 320 drive against a 120GB SF-1200 drive and conclude the Intel's new controller is faster?
My understanding is that larger SSD's generally perform faster than smaller SSD's, particularly in Write operations, because they have more NAND to write across at once.
How would the 120GB model Intel 320 stand up to a Vertex 2 120GB, when it doesn't have the NAND chip quantity advantage?
Thanks,
crimson117
crimson117 - Monday, March 28, 2011 - link
EDIT: I just saw this on the final page."We also don't have a good idea of how much slower the smaller capacity drives perform in our benchmarks at this point."
That should be mentioned as a caveat on the first page's "Intel SSD 320 300GB vs. Corsair Force F120 [120GB]" comparison chart (if you even keep that chart at all). That chart really doesn't provide a useful comparison when you consider the size advantage of the Intel drive.