Samsung T1 500GB USB3 SSD Review

I/O Performance

IOMeter is probably the most versatile of all the synthetic
benchmarks. Its ability to be configured to generate a multitude of different
I/O traffic is unmatched. Another great feature of IOMeter, is the capability
to test any storage metric that you can think of, providing you know how to
configure the assignments. The reviewer also has complete control over things
like queue depth, block size, whether the traffic is random, sequential, or
even a mixture of both.

Partition alignment and sector boundaries

Windows 8.1, Windows 7, and Windows 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 and 8 will use 4k boundaries
if they can. The Samsung T1 SSD 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.

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, Windows 8, and Windows
Vista users. XP users will not be able to obtain such results.

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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.

Queue depth 1

Samsung T1 500GB USB3 SSD Review

At 39.39 MB/s the Samsung T1 500GB SSD is excellent for a
USB3 connected SSD.

Our next 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. I will use queue depths of 4 and
32 for these tests.

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Queue depth 4

Samsung T1 500GB USB3 SSD Review

At a queue depth of 4, the Samsung T1 SSD is pretty good,
and we can see that UASP is allowing queue depth scaling.

Queue depth 32

Samsung T1 500GB USB3 SSD Review

At 157.91 MB/s, the Samsung T1 500GB SSD is excellent for a
USB3 connected SSD.

4K random write queue depth profile

The following graph is displaying how the Samsung T1
external USB3 SSD scales with increasing queue depth.

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Samsung T1 500GB USB3 SSD Review


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

Samsung T1 500GB USB3 SSD Review

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In this test the Samsung T1 SSD has very good performance
for a USB3 device.

Queue depth 4

Samsung T1 500GB USB3 SSD Review

At a queue depth of four, the Samsung T1 is excellent.

Queue depth 32                             

Samsung T1 500GB USB3 SSD Review

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At a queue depth of 32, the Samsung T1 SSD is showing a very
good turn of speed.

4K random read queue depth profile.

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

Samsung T1 500GB USB3 SSD Review

If we look at the Samsung T1 SSD 4K random read performance
in detail, we can see that the T1 scales quite well with increasing queue depths.


IOMeter 512KB sequential write test with repeating data.

Sequential writing performance is very important for a data
storage drive; in this test sequential writing performance is measured.

Samsung T1 500GB USB3 SSD Review

The Samsung T1 SSD shows an excellent turn of speed for a
USB3 connected device.

512K sequential write – Queue depth profile

Samsung T1 500GB USB3 SSD Review

 

The Samsung T1 SSD series reaches peak performance at a queue
depth of four, where it manages 442.41 MB/s.


IOMeter 512KB sequential read test (dual threaded).

This test measures 512k sequential reading performance QD2.

Samsung T1 500GB USB3 SSD Review

At a realistic queue depth the Samsung T1 500GB is showing
excellent sequential reading performance for a USB3 connected SSD.

512K sequential read – Queue depth profile

Samsung T1 500GB USB3 SSD Review

The Samsung T1 SSD reaches maximum sequential reading performance
at a queue depth of four, where it achieves 462.61 MB/s, which is pretty much
on the limits of USB3.

 

Now let’s head to the next page for some real world tests….

 

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