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Crucial M550 128GB SSD Review

By: Chris Ramseyer | SSDs in Storage | Posted: Mar 19, 2014 11:07 pm
TweakTown Rating: 93%Manufacturer: Crucial

HD Tune Pro


Version and / or Patch Used: 4.00

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HD Tune is a Hard Disk utility which has the following functions:


Benchmark: measures the performance

Info: shows detailed information

Health: checks the health status by using SMART

Error Scan: scans the surface for errors

Temperature display


HD Tune Pro gives us accurate read, write, and access time results and, for the last couple of years, has gained popularity amongst reviewers. It is now considered a must-have application for storage device testing.





Sequential performance on the M500 was never an issue, so we don't expect to have issues in this area with the M550. One issue we will have today is with other drives on the chart. The ADATA SX900 moved to 20nm flash since we tested it, and the Kingston V300 moved to 20nm asynchronous flash, so you shouldn't reference it to the V300 available at e-tailers today. The Intel 520 and OCZ Vector were discontinued.




When comparing the M500 to the M550, the write performance in both sequential and random should show very large differences. Here we see the M500 averaging just 115.9 MB/s in HD Tune Pro sequential write, and the new M550 averages over 317 MB/s. This is a massive performance increase for the 128GB drive and makes it competitive with the fastest 128GB capacity class drives available on the market today.


HD Tach - Sequential Write Performance after Random Writes




After hitting the M550 128GB with random writes, we retested sequential performance, this time at 128 KB. The drive dips to very low write performance levels, not much higher than 15 MB/s on the low-end. Later in this review, we'll show that this is partially due to aggressive background garbage collection similar to what Plextor uses and partially due to the foreground garbage collection taking place prior to a write event.

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