HD Tune Pro (sequential reading speed)
I present the graph below for comparison with other recently
From our limited number of test samples, we can clearly see that the Plextor PX-256M2S SSD is very fast;
in fact it’s the second fastest reading drive in this test.
HD-Tach (sequential reading and writing speeds)
The average reading speed of the Plextor PX-256M2S is 377.1
MB/s, and the average writing speed is 302.5 MB/s.
ATTO disk benchmark
ATTO has become a standard tool for measuring the data
throughput of HDD and SSD. It measures the performance of reading and writing,
using different file sizes and block sizes.
(Default queue depth 4)
The reading speed results on the Plextor PX-256M2S are
extremely impressive, topping out at over 484 MB/s, and writing speeds are
equally impressive, topping out at over 342 MB/s.
Crystal Disk Mark is quite a handy benchmarking application,
as it focuses on the file sizes that can cause a problem on a system drive.
Sequential reading and writing speeds are once again
confirmed to be of a very high standard. 4K random figures even with increased
queue depth are a little low by today’s standards.
AS SSD Benchmark
AS SSD benchmark is a benchmarking tool specifically
designed to test SSDs. The application tests sequential reading and writing
performance, 4K random reading and writing performance.
AS SSD benchmark also tests 4K threaded performance. This is
very exciting, as this test is the first available test that I am aware of,
that simulates how a PC operating system actually works. A modern PC and OS,
such as Windows Vista does not just run a single thread at a time, it runs many
threads. The AS SSD benchmark "4K 64Thrd" tests run 64 threads
simultaneously throughout the test. If this result is good, then you can be
pretty sure the drive will perform extremely well as a system drive.
After the tests complete, AS SSD benchmark derives a total
score for the drive being tested. This is based on all aspects of the test
results, and gives an indication of how the drive is performing overall.
Now let’s look at the result from the Plextor PX-256M2S in
the form of a screenshot. All our other comparison drives’ results are
presented in the form of a graph.
Once again, sequential reading and writing speeds are very
impressive, but 4K random performance is a little low.
With 4K performance being a little low by today’s standards,
this has had quite a large impact on the overall AS SSD Benchmark score, and
the Plextor PX-256M2S finishes in fifth place overall.
AS SSD compression benchmark.
This test creates test patterns on the target drive which
are random and vary in the level of compression used in the test data. This
ranges from 0% compressible to 100% compressible. This test is ideal for
SandForce based drives, as it will show the relevant performance at different
levels of compression already applied to the test data.
I run this test on the Plextor PX-256M2S, and also on three
- Crucial RealSSD C300 128GB
- OCZ Vertex 2 100GB
- OCZ Vertex 3 240GB
Below are the obtained results.
OCZ Vertex 3 240GB
Crucial RealSSD C300 128GB
OCZ Vertex 2
The Plextor PX-256M2S doesn’t compress data on the fly like
the two SandForce based drives, and the PX-256M2S has performed very well in
It’s a bit of a mixed bag where the Plextor PX-256M2S is
concerned with our synthetic benchmarks. The PX-256M2S has very strong sequential
performance, but unfortunately small file random performance is not so good,
and it simply can’t keep pace with the SandForce SF-2281 based OCZ Vertex 3.
Let’s head to the next page for our IOMeter test