Performance consistency tells us a lot about the architecture of these SSDs and how they handle internal defragmentation. The reason we do not have consistent IO latency with SSDs is because inevitably all controllers have to do some amount of defragmentation or garbage collection in order to continue operating at high speeds. When and how an SSD decides to run its defrag or cleanup routines directly impacts the user experience as inconsistent performance results in application slowdowns.
To test IO consistency, we fill a secure erased SSD with sequential data to ensure that all user accessible LBAs have data associated with them. Next we kick off a 4KB random write workload across all LBAs at a queue depth of 32 using incompressible data. The test is run for just over half an hour and we record instantaneous IOPS every second.
We are also testing drives with added over-provisioning by limiting the LBA range. This gives us a look into the drive’s behavior with varying levels of empty space, which is frankly a more realistic approach for client workloads.
Each of the three graphs has its own purpose. The first one is of the whole duration of the test in log scale. The second and third one zoom into the beginning of steady-state operation (t=1400s) but on different scales: the second one uses log scale for easy comparison whereas the third one uses linear scale for better visualization of differences between drives. Click the dropdown selections below each graph to switch the source data.
For more detailed description of the test and why performance consistency matters, read our original Intel SSD DC S3700 article.
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25% Over-Provisioning
The IO consistency is very similar to the ARC 100 but the R7 is maybe slightly faster. Compared to the Vector 150 and Vertex 460 there is a small decrease in consistency as performance occassionally drops below 10K IOPS, but on average IOPS of 15-20K is excellent for a client drive. The same goes for IO consistency with 25% over-provisioning – the R7 is not as good as the Vector 150 and Vertex 460 but it is still one of the best performing client SSDs.
It would be amusing if consumers weren't being harmed by this. OCZ has such a deservedly poor reputation that they're turning to rebranding to try to foist their crap on an unsuspecting audience. No way, and I'll warn anyone who will listen about this. Shame on AMD for partnering with such an unscrupulous vendor.
OCZ is now owned by Toshiba, and their current drives work well. Continuing to harp on the old OCZ and their bad line of drives is silly. There's nothing "unscrupulous' about OCZ nowadays.
I'm not the most knowledgeable when it comes to screen resolution specs,but I will tell you that whenI first saw homepage and when I watched my first video on Netflix,I was very satisfied with hat I saw.It looked great.Since watching a ten inch screen from only a couple of feet away,makes the screen size seem to appear the same sizeas if you were in a real movie theater ,it didn't seem to matter to me.And one more thing ,it looks and feels great so go and get one for yourselves and enjoy!
Bought a vertex 3 during Thanksgiving 2011, I knew it was risky but the performance could not be beat at the time. It is still my primary boot drive and going strong 3 years later. I really can't complain and in my book OCZ is still okay.
No doubt OCZ is a top SSD manufacturer, now that it has full access to Toshiba resources and NAND.The main problem of this drive is pricing, as Kristian said. :)
"For someone with very little or no understanding of computers, the AMD branding can provide a peace of mind since AMD is fairly large and visible brand in the industry"
Actually, if I had to say, I think this title goes to Kingston. ADATA and Sandisk have been coming in close second as of late. The average Joe is going to brands they recognize for RAM and flash...
I would say AMD does not have a large and visible brand in the industry...that counts for anything.
Assk 100 random Joes in the street if they know of Intel or AMD and I bet 85 of them will know about Intel "Oh they make computers don't they?" and maybe 5 might actually know what AMD do.
I've never had issues with an ocz product. I've build several computer computers with there ram sticks, power supplies, and old (sanforce) and new ssds. I did have a power supply go out when it got struck by lightning. There old ram and power supplies got the job done on a budgit computer, and now there ssds to me represent a small company competting with much bigger companies, and winning much of the time. The only issues they had was with sanforce controllers, and for some reason, people forget that every sanforce drive (which was most drives then) was having the same issues, but people seem to only like to blame ocz for it. They were one of the only brands that decided to take steps to move away from relying on another company to provide a controller for them, which was expensive. Toshiba did not aquire ocz because they needed a ssd in the market, they already had one. Ocz is a small company, that has a realitivly amazing drive, it was a matter of time before somebody bought them.
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LB-ID - Thursday, August 28, 2014 - link
It would be amusing if consumers weren't being harmed by this. OCZ has such a deservedly poor reputation that they're turning to rebranding to try to foist their crap on an unsuspecting audience. No way, and I'll warn anyone who will listen about this. Shame on AMD for partnering with such an unscrupulous vendor.errorr - Friday, August 29, 2014 - link
Well considering most of there less than scrupulous employees are not part of a completely new subsidiary of Toshiba...kyuu - Tuesday, September 2, 2014 - link
OCZ is now owned by Toshiba, and their current drives work well. Continuing to harp on the old OCZ and their bad line of drives is silly. There's nothing "unscrupulous' about OCZ nowadays.ronnyzigzag - Thursday, August 28, 2014 - link
I'm not the most knowledgeable when it comes to screen resolution specs,but I will tell you that whenI first saw homepage and when I watched my first video on Netflix,I was very satisfied with hat I saw.It looked great.Since watching a ten inch screen from only a couple of feet away,makes the screen size seem to appear the same sizeas if you were in a real movie theater ,it didn't seem to matter to me.And one more thing ,it looks and feels great so go and get one for yourselves and enjoy!pt2501 - Thursday, August 28, 2014 - link
Bought a vertex 3 during Thanksgiving 2011, I knew it was risky but the performance could not be beat at the time. It is still my primary boot drive and going strong 3 years later. I really can't complain and in my book OCZ is still okay.LiviuTM - Friday, August 29, 2014 - link
No doubt OCZ is a top SSD manufacturer, now that it has full access to Toshiba resources and NAND.The main problem of this drive is pricing, as Kristian said. :)lilmoe - Friday, August 29, 2014 - link
"For someone with very little or no understanding of computers, the AMD branding can provide a peace of mind since AMD is fairly large and visible brand in the industry"Actually, if I had to say, I think this title goes to Kingston. ADATA and Sandisk have been coming in close second as of late. The average Joe is going to brands they recognize for RAM and flash...
jabber - Friday, August 29, 2014 - link
I would say AMD does not have a large and visible brand in the industry...that counts for anything.Assk 100 random Joes in the street if they know of Intel or AMD and I bet 85 of them will know about Intel "Oh they make computers don't they?" and maybe 5 might actually know what AMD do.
Crdlp - Monday, September 1, 2014 - link
I've never had issues with an ocz product. I've build several computer computers with there ram sticks, power supplies, and old (sanforce) and new ssds. I did have a power supply go out when it got struck by lightning. There old ram and power supplies got the job done on a budgit computer, and now there ssds to me represent a small company competting with much bigger companies, and winning much of the time. The only issues they had was with sanforce controllers, and for some reason, people forget that every sanforce drive (which was most drives then) was having the same issues, but people seem to only like to blame ocz for it. They were one of the only brands that decided to take steps to move away from relying on another company to provide a controller for them, which was expensive. Toshiba did not aquire ocz because they needed a ssd in the market, they already had one. Ocz is a small company, that has a realitivly amazing drive, it was a matter of time before somebody bought them.Clubber Lang - Sunday, September 7, 2014 - link
I have 5 OCZ SSD Primary Boot drives that have been in use since 2009/2010, and not one has failed.Quite frankly I think a lot of people back then were ruining their SSD's by defragging them to death. (Auto defrag used to be on by default)