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Samsung 850 EVO 500GB SATA III M.2 SSD Review (Page 8)

By Jon Coulter on May 21, 2015 09:15 am CDT
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)

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Samsung specs the 850 EVO M.2 at 97/87K 4KB random performance, and we have no issues achieving those specifications.

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.

Write Response

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Read Response

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Average Disk Response

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Samsung's 850 EVO M.2 sets the bar for lowest write access times.

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 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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Previously, our 850 Pro, Seagate 600 Pro and Intel 730 were measured with transfers coming off an array, so we updated our chart with transfers coming off our DC P3700. They are all much improved. The 850 EVO M.2 is right up there with the best of them, despite the write transfer size far exceeding the EVO's TurboWrite capacity.

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Jon Coulter

ABOUT THE AUTHOR - Jon Coulter

Jon Coulter became a computer enthusiast about the time Windows XP launched. Originally Jon was into water cooling and competitively benching ATI video cards with modified drivers. Jon has been building computer systems for himself and others by request for more than 10 years. Jon became a storage enthusiast the day he first booted his system with an Intel X25-M G1 80GB SSD. Look for Jon to bring consumer SSD reviews into the spotlight.

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