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MyDigitalDiscount 128GB/256GB/512GB M.2 NVMe PCIe SSD Review

By: Jon Coulter | SSDs in Storage | Posted: Apr 25, 2018 1:00 pm
TweakTown Rating: 89%Manufacturer: MyDigitalDiscount

Iometer - Maximum IOPS

 

Version and / or Patch Used: Iometer 2014

 

We use Iometer to measure high queue depth performance. (No Partition)

 

Max IOPS Read

 

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Max IOPS Write

 

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We test NVMe SSDs using eight threads at QD32, or QD256. We do this because we want to see what the drive can generate at its maximum attainable queue depth.

 

This test sums up pretty well what we've seen to this point. The SBX is faster than the 600p at every capacity point. Faster and cheaper is a winning combination in our book.

 

 

 

Iometer - Disk Response

 

Version and / or Patch Used: Iometer 2014

 

We use Iometer to measure disk response times. Disk response times are measured at an industry accepted standard of 4K QD1 for both write and read. Each test runs twice for 30 seconds consecutively, with a 5-second ramp-up before each test. We partition the drive/array as a secondary device for this testing.

 

Avg. Write Response

 

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Avg. Read Response

 

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The 512GB 600p manages to eek out a win in write response, but that's it. Other than that, the SBX dominates the 600p. Take a look at read response, which is more important than write response. Both the 512GB and 128GB SBX are delivering the goods better than the M8Se and the SX8000. We consider this a win for the SBX.

 

 

DiskBench - Transfer Rate

 

Version and / or Patch Used: 2.6.2.0

 

We use DiskBench to time a 28.6GB block (9,882 files in 1,247 folders) composed primarily of incompressible sequential and random data as it's transferred from our Toshiba RD400 1TB NVME SSD to our test drive. We then read from a 6GB zip file that's part of our 28.6GB data block to determine the test drive's read transfer rate. Our system is restarted prior to the read test to clear any cached data, ensuring an accurate test result.

 

Write Transfer Rate

 

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Read Transfer Rate

 

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We recently upgraded our test system to Windows 10 build 14393. With that upgrade, write transfer rates almost doubled. The reason for this, as far as we know, is that CPU power switching modes have been relaxed on the latest version of Windows 10. We included the NVMe drives we've tested to date on this build of Windows 10. If you needed a good reason to upgrade to a newer version of Windows 10; this is a good reason.

 

This test reveals our biggest beef with Intel's 600p front and center. Look at the write transfer rate. It's slower than some mechanical HDDs. This means that if you are transferring a large block of data like a game, the 600p is slower than some mechanical HDDs. Now look at how much better the SBX does. It's even better than our 4-lane Plextor contenders.

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