Toshiba OCZ VX500 SSD Review (256GB/512GB/1TB) – A New MLC Contender In The Recent Sea of TLC


SSD testing at TSSDR differs slightly, depending on whether we are looking at consumer or enterprise SSDs. For consumer SSDs, our goal is to test in a system that has been optimized with our SSD Optimization Guide. To see the best performance possible, the CPU C states have been disabled, C1E support has been disabled, Enhanced Intel SpeedStep Technology (EIST) has been disabled. Benchmarks for consumer testing are also benchmarks with a fresh drive so, not only can we verify that manufacturer specifications are in line but also, so the consumer can replicate our tests to confirm that they have an SSD that is top-notch. We even provide links to most of the benchmarks used in the report.

Sean Consumer Test Bench Core V51


This Test Bench build was the result of some great relationships and purchase; our appreciation goes to those who jumped in specifically to help the cause. Key contributors to this build are our friends at ASRock for the motherboard and CPU and be quiet! for the PSU and cooling fans. Also, a big thank you to Thermaltake for the case and Kingston for the RAM. We have detailed all components in the table below and they are all linked should you wish to make a duplicate of our system as so many seem to do, or check out the price of any single component. As always, we appreciate your support in any purchase through our links!

PC CHASSIS: Thermaltake Core V51
MOTHERBOARD: ASRock Z97 Extreme6
CPU: Intel Core i5-4670K
CPU COOLER: Corsair H75
POWER SUPPLY: be quiet! Dark Power Pro 10 850W
SYSTEM COOLING: be quiet! Silent Wings 2
MEMORY: Kingston HyperX Beast 2400Mhz
STORAGE: Samsung 850 Pro


The software in use for today’s analysis is typical of many of our reviews and consists of Crystal Disk Info, TRIMcheck, ATTO Disk Benchmark, Crystal Disk Mark, AS SSD, Anvil’s Storage Utilities, PCMark Vantage, and PCMark 8. We prefer to test with easily accessible software that the consumer can obtain, and in many cases, we even provide links. Our selection of software allows each to build on the last and to provide validation to results already obtained.


Crystal Disk Info is a great tool for displaying the characteristics and health of storage devices. It displays everything from temperatures, to the number of hours the device has been powered, and even to the extent of informing you of the firmware of the device.


Crystal Disk Info reveals the VX500’s SMART support and confirms that it supports NCQ, TRIM, and DevSleep as well. Additionally, we can see that the firmware being tested on is JYCX0101. The VX500 also has a temperature sensor that works, but no total writes counter.


We’ve covered TRIMcheck in the past. It is a great tool that easily lets us see if TRIM is actually functioning on a SSD volume in your system.

1TB Crucial MX300 RAID 0 trim

As can be seen in the screenshot above, TRIM is indeed working.


ATTO Disk Benchmark is perhaps one of the oldest benchmarks going and is definitely the main staple for manufacturer performance specifications. ATTO uses RAW or compressible data and, for our benchmarks, we use a set length of 256mb and test both the read and write performance of various transfer sizes ranging from 0.5 to 8192kb. Manufacturers prefer this method of testing as it deals with raw (compressible) data rather than random (includes incompressible data) which, although more realistic, results in lower performance results.






ATTO shows high sequential results of over 550MB/s read and 515MB/s write for all models. We also see an improvement in performance in ATTO with smaller file sizes over the previous VR180.


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    Where is the hd tune pro chart to see what happens after slc runs out?

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      After running HDTune on all capacities we tested there was no drop off in write performance. All maintained about 490MB/s write across the board.

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        That sounds like one of the highest read / write averages for a sata3 ssd from start to finish. Am I right? Thank goodness for mlc.

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        It is up there for sure. We have not tested write performance with many other MLC SSDs in HDTune so I can not say for sure one of the highest, but it sure is good!

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        Now that’s the way a HD Tune chart should look. Nice! I hope they keep making mlc drives because I cant believe companies are still trying to sell us on write speed does not matter. If we wanted slow write speeds we would stick with hard drives.

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        I find it highly unlikely, that 256GB model can hit sustained 490MB/s write. MLC is good, but not that good. That would require 64Gbit dies to achieve.

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        The heading / advertisement should read. This mlc ssd is not just good its great!

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    I get sick of seeing this nonsense… ‘Once formatted the 256GB model has 238GB of usable space’.

    You should know better, it’s simply a difference of GB vs GiB.

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      The majority of our readers do not know this unfortunately and thus we provided this information as we do.

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      Actually, the statement is 100% correct. Typical consumers, and in fact, the industry does not advertise or speak of GiB whatsoever in discussing available volume on a SSD. The SSD is a consumer directed SSD and 99.9% of consumers don’t understand GiB whatsoever. They want and deserve to know how much logical space is available to them when the drive is formatted. The freedom to read what we wish is an amazing thing.

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        I found it funny you got so defensive.

        You should be trying at least to educate your readership, rather than just perpetuating myths about lost space through formatting.

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        You have a strange sense of humour.

        You criticized, and Les responded. Yes, that’s defensive.

        While your first comment might be true, you shouldn’t be surprised that Les explained why he writes what/how he does… which is also true.

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        I dont recall ever stating, or rather Sean writing that space was lost after formatting. He simply stated the available space after the drive was formatted. Should he then have to say that, before formatting, there is no available space for storage? Nobody ever spoke of lost space, but rather, at least I think you sought the opportunity to perpetuate the whole GB/GiB scenario.

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