Samsung T3 2TB External 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 10, 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 T3 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, Windows 10 and
Windows Vista users. XP users will not be able to obtain such results.

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 T3 2TB External USB3 SSD Review

At 40.95 MB/s the Samsung T3 2000GB SSD is excellent for a
USB3 connected SSD.

Samsung T3 2TB External USB3 SSD Review

As we can see, the Samsung T3 is faster in this test than
the T1.

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.

Queue depth 4

Samsung T3 2TB External USB3 SSD Review

At a queue depth of 4, the Samsung T3 SSD is pretty good,
and we can see that UASP is allowing queue depth scaling.

Samsung T3 2TB External USB3 SSD Review

Once again, the Samsung T3 proves to be faster than the T1.

Queue depth 32

Samsung T3 2TB External USB3 SSD Review

At 161.61 MB/s, the Samsung T3 2000GB SSD is excellent for a
USB3 connected SSD.

Samsung T3 2TB External USB3 SSD Review

Yet again, the Samsung T3 proves to the faster of the two
tested drives.

4K random write with incompressible data.

In this test, I am testing writing performance with test
data that can’t be compressed.

Samsung T3 2TB External USB3 SSD Review

Samsung T3 2TB External USB3 SSD Review

In this test, the Samsung T3 is marginally faster than the
Samsung T1.

4K random write queue depth profile

The following graph is displaying how the Samsung T3
external USB3 SSD scales with increasing queue depth, and also shows comparison
results obtained from the Samsung T1.

Samsung T3 2TB External 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 T3 2TB External USB3 SSD Review

In this test the Samsung T3 SSD delivers very good performance
for a USB3 device.

Samsung T3 2TB External USB3 SSD Review

The Samsung T3 is faster than the Samsung T1 in this test.

Queue depth 4

Samsung T3 2TB External USB3 SSD Review

At a queue depth of four, the Samsung T3 is excellent.

Samsung T3 2TB External USB3 SSD Review

This time the Samsung T1 is faster than the Samsung T3.

Queue depth 32                            

Samsung T3 2TB External USB3 SSD Review

At a queue depth of 32, the Samsung T3 SSD is showing a very
good turn of speed.

Samsung T3 2TB External USB3 SSD Review

The Samsung T1 is marginally faster than the Samsung T3 in
this test.

4K random read queue depth profile.

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

Samsung T3 2TB External USB3 SSD Review

If we look at the Samsung T3 SSD 4K random read performance
in detail, we can see that the T3 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 T3 2TB External USB3 SSD Review

The Samsung T3 SSD shows an excellent turn of speed for a
USB3 connected device.

Samsung T3 2TB External USB3 SSD Review

As you can see in the above graph, the Samsung T3 proved to
be faster than the Samsung T1 when writing sequential data.

512KB sequential write test with incompressible data.

Samsung T3 2TB External USB3 SSD Review

Samsung T3 2TB External USB3 SSD Review

Once again, the Samsung T3 proved to be faster than the
Samsung T1.

512K sequential write – Queue depth profile

Samsung T3 2TB External USB3 SSD Review

The Samsung T3 SSD series reaches peak performance at a queue
depth of four, where it manages 456.79 MB/s.


IOMeter 512KB sequential read test (dual threaded).

This test measures 512k sequential reading performance QD2.

Samsung T3 2TB External USB3 SSD Review

Samsung T3 2TB External USB3 SSD Review

With a sequential reading speed of 464.4 MB/s, the Samsung
T3 is excellent, and is slightly faster than the older Samsung T1.

512K sequential read – Queue depth profile

Samsung T3 2TB External USB3 SSD Review

The Samsung T3 SSD reaches maximum sequential reading performance
at a queue depth of four, where it achieves 464.47 MB/s, which is pretty much
on the limits of USB3.

 

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