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Samsung 850 EVO and 850 PRO 2TB SSDs Review

By: Jon Coulter | SSDs in Storage | Posted: Jul 6, 2015 2:00 pm
TweakTown Rating: 98%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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The 2TB EVO is matching and exceeding specification, the 2TB Pro is not quite hitting advertised specs. Kingston's HyperX Savage is the winner of this test.

 

 

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 2TB PRO has better read/write response times than the 2TB EVO. In both read and write response times the 2TB 850 PRO becomes our single drive SATA lab record holder. Note the improvement of the 2TB 850 PRO over the 512GB version.

 

 

DiskBench - Directory Copy

 

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 DC P3700 PCIe 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 drives 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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For the most part all of the Samsung drives perform the same. The only stand out in this test is the HyperX Savage's write transfer rate.

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