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Samsung 970 EVO 2TB M.2 NVMe PCIe SSD Review (Page 7)

By Jon Coulter from Jun 20, 2018 @ 10:00 CDT
TweakTown Rating: 95%Manufacturer: Samsung

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 (QD256). We do this because we want to see what the drive can generate at its maximum attainable queue depth.

At lower queue depths, the 1TB 970 EVO has a significant advantage over the 2TB model. However, as this test shows, at extremely high queue depths the 2TB model can surpass the 1TB model. This reflects what Samsung's spec sheet indicates.

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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Response testing shows what we've seen throughout. The 1TB 970 EVO is more responsive when reading random data than the 2TB model.

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. We consider write transfers to be more important than read transfers.

Write Transfer Rate

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Read Transfer Rate

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The 2TB 970 EVO ties with the 1TB model for best write transfer rate of any TLC SSD we've tested to date.

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