Toshiba OCZ VX500 SATA SSD Review: Fast, Affordable Storage

Test Setup, IOMeter 1.1, Compression Tests

Our Test Methodologies: Under each test condition, the Solid State Drives tested here were installed as secondary volumes in our testbed, with a separate drive used for the OS and benchmark installations. Out testbed's motherboard was updated with the latest BIOS available at the time of publication and AHCI (or RAID) mode was enabled.

The SSDs were secure erased prior to testing, and left blank without partitions for some tests, while others required them to be partitioned and formatted, as is the case with our ATTO, PCMark, SANDRA, and CrystalDiskMark benchmark tests. Windows firewall, automatic updates and screen savers were all disabled before testing. In all test runs, we rebooted the system, ensured all temp and prefetch data was purged, waited several minutes for drive activity to settle and for the system to reach an idle state before invoking a test.

HotHardware Test System
Intel Core i7 and SSD Powered
Processor -

Motherboard -


Video Card -

Memory -

Audio -

Storage -

Intel Core i7-6700K

Asus Z170 Deluxe
(Z170 Chipset, AHCI Enabled)

Intel HD 530

16GB Corsair DDR4-2666

Integrated on board

Corsair Force GT (OS Drive)
Samsung SSD 850 EVO
OCZ Vertex 460
OCZ Trion 150
OCZ VX 500
Crucial M550
OS -

Chipset Drivers -

DirectX -

Video Drivers -

Benchmarks -
Windows 10 Pro x64

Intel 10.1.19, iRST 14.5.0.1081

DirectX 12

Intel HD 15.40.3.4248

IOMeter 1.1.0 RC
HD Tune v5.60
ATTO v3.05
AS SSD
CrystalDiskMark v5.0.2 x64
PCMark 7
SiSoftware Sandra 2015 SP3
IOMeter
I/O Subsystem Measurement Tool
As we've noted in previous SSD articles, though IOMeter is clearly a well-respected industry standard drive benchmark, we're not completely comfortable with it for testing SSDs. The fact of the matter is, though our actual results with IOMeter appear to scale properly, it is debatable whether or not certain access patterns, as they are presented to and measured on an SSD, actually provide a valid example of real-world performance--the access patterns we tested may not reflect your particular workload. That said, we do think IOMeter is a reliable gauge for relative available throughput within a given storage solution. In addition there are certain higher-end workloads you can place on a drive with IOMeter, that you can't with most other storage benchmark tools available currently.


In the following tables, we're showing two sets of access patterns; our custom Workstation pattern, with an 8K transfer size, 80% reads (20% writes) and 80% random (20% sequential) access and a 4K access pattern with a 4K transfer size, comprised of 67% reads (34% writes) and 100% random access.

io1


io2

The new OCZ VX500 series drives performed relatively well with the IOMeter access patterns we tested. The performance of the drives starts near the bottom at the lowest queue depth, but get's better as the workload increases. At QD32, the drives finish near the top.

 io3

The overall bandwidth scores at the highest queue depth reflect what we saw in the charts above -- both of the VX500 series drives we tested finished near the top, trailing only the Samsung drive.

AS SSD Compression Benchmark
Bring Your Translator: http://bit.ly/aRx11n
Next up we ran the Compression Benchmark built-into AS SSD, an SSD specific benchmark being developed by Alex Intelligent Software. This test is interesting because it uses a mix of compressible and non-compressible data and outputs both Read and Write throughput of the drive. We only graphed a small fraction of the data (1% compressible, 50% compressible, and 100% compressible), but the trend is representative of the benchmark’s complete results.

as1


as2

The compressibility of data being transferred on the OCZ VX500 series drives has minimal impact on performance. Data rates remain mostly flat and smooth regardless on the compressibility of the data and they're among the highest performing drives in this test.

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