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Crucial MX300 750GB SATA III SSD Review (Page 7)

By Jon Coulter from Jun 14, 2016 @ 1:00 CDT
TweakTown Rating: 87%Manufacturer: Crucial

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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Max IOPS figures land right on factory specification. The MX300 delivers the highest write IOPS of the SSDs in our test pool.

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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Contrary to what we've seen to this point, the MX300 delivers the best read response; by a good margin no less. The SP550 just edges out the MX300 for the best write response.

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 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 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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Of all the tests in our regimen, the write portion of this test, we feel is the most important when evaluating TLC SSDs. We have to look no further than Crucial's own BX200 to see exactly why. When an SSD can't even write a large chunk of data as fast as even low performing spinning disk drives, it's not something we will ever be able to recommend to our readers. The MX300 delivers excellent sustained write performance easily outperforming the rest of the drives in our test pool. This testing clearly displays the superiority of 3D flash.

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