Average Bench: 68.5% (344th of 859)

Based on 7,454 user benchmarks.  Models: Crucial_CT275MX300SSD1, Crucial_ CT275MX300SSD1

The 275GB Crucial MX300 supersedes the MX200. Unlike its predecessor, the MX300 is TLC based and therefore suffers from weak write speeds in comparison to MLC drives. The MX300 utilises a sophisticated algorithm to enable fast burst write speeds provided that there is sufficient free space on the disk but as the drive fills up write performance drops to the relatively poor levels seen on other TLC drives (similar to mechanical drives). At current prices (70 USD) the MX300 competes well with other low end drives such as the OCZ Trion, Adata SP550 and Samsung 750 EVO. As stocks build the MX300 is likely to see further price cuts, so it could become a very interesting value proposition. See the current value leaders here[Sep '16 SSDrivePro]


Above average average bench

The Crucial MX300 275GB averaged 31.4% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Read Speed 22.5MB/s
Avg. Sequential Read Speed 464MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 30.3%. This is a relatively narrow range which indicates that the Crucial MX300 275GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 26.4MB/s
Avg. 4K-64Thread Read Speed 128MB/s

Average Bench

(Based on 7,454 samples)
Min Avg Max
426 Read 464 484
197 Write 299 339
162 Mixed 311 339
79.2% 358 MB/s
Min Avg Max
15.8 4K Read 22.5 27.5
29.4 4K Write 58.2 81.6
9.36 4K Mixed 17.1 24.4
87% 32.6 MB/s
Min Avg Max
20.1 DQ Read 128 230
46.4 DQ Write 138 221
9.43 DQ Mixed 26.4 40.5
49.2% 97.3 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
38GB free
Firmware: M0CR040 Max speed: SATA 3.0 600 MB/s
Read 474
Write 333
Mixed 336
84% 381 MB/s
4K Read 24
4K Write 81.4
4K Mixed 23.6
110% 43 MB/s
DQ Read 231
DQ Write 218
DQ Mixed 40.7
81% 163 MB/s
24GB free
Firmware: M0CR031 Max speed: SATA 3.0 600 MB/s
Read 448
Write 321
Mixed 319
80% 363 MB/s
4K Read 23
4K Write 43.5
4K Mixed 20.5
84% 29 MB/s
DQ Read 136
DQ Write 92.3
DQ Mixed 39.8
50% 89.5 MB/s
169GB free
Firmware: M0CR040 Max speed: SATA 3.0 600 MB/s
Read 437
Write 291
Mixed 308
76% 345 MB/s
4K Read 21.7
4K Write 36.4
4K Mixed 18.1
75% 25.4 MB/s
DQ Read 101
DQ Write 64.6
DQ Mixed 33.2
38% 66.1 MB/s
120GB free
Firmware: M0CR040 Max speed: SATA 3.0 600 MB/s
Read 436
Write 329
Mixed 325
81% 363 MB/s
4K Read 21.9
4K Write 40.7
4K Mixed 11.9
70% 24.8 MB/s
DQ Read 24
DQ Write 47.2
DQ Mixed 11.8
16% 27.7 MB/s
7,454 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,856,388 SSDs tested.


AmazonUS $92.9916 mins ago.
NeweggUS $92.996 hrs ago.
EbayUS $94.992 mins ago.
Send price feedback
Typical MX300 275GB Builds (Compare 17,270 builds) See popular component choices, score breakdowns and rankings.
Gaming 94%
Nuclear submarine
Desktop 79%
Workstation 63%

Motherboard: Asus Z170 PRO GAMING - $158

EDIT WITH CUSTOM PC BUILDER Value: 82% - Excellent Total price: $1,127

Popular MX300 275GB compatible motherboards:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) September 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]


Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC.

Instant performance that lasts....

Added 12 months ago.

Good (edit your comment) Add link

2 months ago.

need to free up space for better performance score.


3 months ago.

My result is 84,8%


12 months ago.

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859 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

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