Kingston V300 240GB SSD Review

I/O Performance

There is little point of having an SSD
drive that has blazing sustained reading and writing speeds, if the drive can’t
handle reading and writing of small random files. If you intend to use your new
SSD drive to store and run your operating system, then the drive must be able
to cope with the many small random files that Windows will write to the drive
continually. So I feel it is very important to test how many of these random
files that a drive can handle in one second. I believe that anything over 1,000
I/O’s per second would be enough for most users running a consumer grade mainstream
PC, and should provide a smooth running system. But obviously, the more I/O’s
that a drive can handle, the faster the drive will feel and leave more headroom
for those huge multitasking sessions that users sometimes engage in.

The things that I will look at are the
total I/O per second and total MB/s.

Partition alignment and sector boundaries

Windows 7 and Vista will automatically
align a partition to 4k boundaries during partition creation, Windows XP won’t.
It is imperative that an SSD’s partition is aligned. Windows XP is also
restricted to sector boundaries, while Windows 7 will use 4k boundaries if it
can. The Intel 510 is 4k boundary aware, and will use these boundaries if
possible. Of course it will also remap LBAs for compatibility with the sector
boundaries so that the drive can be used with Windows XP.

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IOMeter allows us to set the sector
boundaries for conducting the tests, and I have therefore set the sector
boundaries at 4K, which means the IOMeter tests are valid for Windows 7 and
Windows Vista users. XP users will not be able to obtain such results.

I will provide a screenshot of the tests on
the review drive for those of you who like to see the actual test result. All
the comparison drive results are represented in the form of graphs.

If any of you would like to see a
screenshot from any IOMeter test on a particular drive, please feel free to
request one, and I’ll post the screenshot in the forum thread.

All the IOMeter tests create a 10GB data
set on the target drive, and each test is run for a duration of 3 minutes.


IOMeter 4K random write test with repeating data.

The first test involves creating continual
4KB random files on the target drive with IOMeter. I use a 4KB file size, as it
is believed that Windows will create and modify many of this size of file
constantly in the background during a typical Windows session. It is said that
most 4K random writes take place at a queue depth of only one, and I have been requested
to include this test in my reviews.

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Queue depth 1

Kingston V300 240GB SSD Review
Kingston V300 240GB SSD – 4K random write (Queue depth1)

Kingston V300 240GB SSD Review

Queue depth 4

Kingston V300 240GB SSD Review
Kingston V300 240GB SSD (Queue depth 4)

Kingston V300 240GB SSD Review

Queue depth 32

Kingston V300 240GB SSD Review
Kingston V300 240GB SSD (Queue depth 32)

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Kingston V300 240GB SSD Review

4K random write queue depth profile

For this
test I used various queue depths from 1 – 32 to give you an idea how this SSD
performs at different queue depths. For a normal desktop user, with lightweight
multitasking, the queue depth will rarely rise above 2. For heavy multitasking,
the queue depth is unlikely to rise above a value of 8.

Kingston V300 240GB SSD Review

Here we can take a more detailed view of how
the Kingston V300 SSD performs with various Queue Depths.

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IOMeter 4K random read test.

If there are many 4k files created, then
that must also mean that many 4k files need to be read. This test measures 4k
reading performance.

It is said that most 4K random reads take
place at a queue depth of only one, and readers have requested that I include
this test in my reviews.

Queue depth 1

Kingston V300 240GB SSD Review
Kingston V300 240GB SSD (Queue depth 1)

Kingston V300 240GB SSD Review

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Queue depth 4

Kingston V300 240GB SSD Review
Kingston V300 240GB SSD (Queue depth 4)

Kingston V300 240GB SSD Review

Queue depth 32

Kingston V300 240GB SSD Review
Kingston V300 240GB SSD (Queue depth 32)

Kingston V300 240GB SSD Review

4K random read queue depth profile.

This test
shows how the review drive scales with increasing queue depths.

Kingston V300 240GB SSD Review

Once again we can have a more detailed look
at the performance of the Kingston V300 SSD with various Queue Depths.


IOMeter 512KB write test with repeating data.

Sequential writing performance is also very
important; in this test sequential writing performance is measured.

Kingston V300 240GB SSD Review
Kingston V300 240GB SSD 512K Sequential write with repeating data

Kingston V300 240GB SSD Review

The result is very impressive, and the
Kingston V300 SSD was able to reach speeds of 530.77 MB/Sec.


IOMeter 512KB sequential write test with fully random
data.

This test
is almost exactly the same as the test above except that the test data is fully
random in nature. This test was requested as SandForce based SSDs gain a lot of
performance by being able to compress data on the fly. While the above test
shows the SandForce based SSDs in a best case scenario, the following test will
show the SandForce based SSDs in a more realistic light. In the real world, the
data is neither 100% incompressible nor 100% compressible, it is somewhere in
between. So please keep this in mind.

Kingston V300 240GB SSD Review

Kingston V300 240GB SSD Review


IOMeter 512KB read test.

This test measures 512k sequential reading
performance.

Kingston V300 240GB SSD Review
Kingston V300 240GB SSD – 512K sequential reading test

Kingston V300 240GB SSD Review

The Kingston V300 continues to be very
impressive, and gives a great result of 517.88 MB/Sec.


IOMeter Workstation simulation (outstanding I/Os = 64).

When running applications you will find
that there is a mixture of small random files and larger sequential files,
being created and read. Not only that, it isn’t just one file at a time. In
this test I measure a simulated workstation pattern, with a queue depth of 64
(threaded).

Kingston V300 240GB SSD Review
Kingston V300 240GB SSD – Workstation simulation

Kingston V300 240GB SSD Review

The Kingston V300 SSD again delivers a very
impressive result, and it was able to achieve a speed of 283.27MB/s.

Summary

The Kingston V300 SSD gave some very
impressive results on the IOMeter tests, which shows that Kingston has done a
very impressive job with the firmware of the drive. In the end, I can only be
impressed by the performance of the drive with sequential data.

 

Now let’s head to the next page where we
will look at how the Kingston V300 SSD performs using Anvil’s Storage utilities….

 

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