Average Bench: 69% (338th of 853)

Based on 6,523 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 30.9% 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 23MB/s
Avg. Sequential Read Speed 466MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 30.2%. 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 25.6MB/s
Avg. 4K-64Thread Read Speed 128MB/s

Average Bench

(Based on 6,523 samples)
Min Avg Max
425 Read 466 484
220 Write 298 338
165 Mixed 311 339
79.2% 358 MB/s
Min Avg Max
16.7 4K Read 23 27.9
27 4K Write 59.9 85.7
9.08 4K Mixed 17.2 24.3
88.6% 33.4 MB/s
Min Avg Max
20 DQ Read 128 229
38.7 DQ Write 140 221
8.89 DQ Mixed 25.6 40.1
49.3% 98 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
177GB free
Firmware: M0CR040 Max speed: SATA 3.0 600 MB/s
Read 481
Write 332
Mixed 337
85% 383 MB/s
4K Read 25.9
4K Write 71
4K Mixed 23.9
107% 40.3 MB/s
DQ Read 228
DQ Write 209
DQ Mixed 39.1
78% 158 MB/s
181GB free
Firmware: M0CR040 Max speed: SATA 3.0 600 MB/s
Read 462
Write 316
Mixed 334
82% 371 MB/s
4K Read 16.7
4K Write 69.2
4K Mixed 14.2
80% 33.4 MB/s
DQ Read 217
DQ Write 205
DQ Mixed 11.9
64% 145 MB/s
230GB free
Firmware: M0CR031 Max speed: SATA 3.0 600 MB/s
Read 470
Write 274
Mixed 312
78% 352 MB/s
4K Read 22.7
4K Write 57.3
4K Mixed 21.5
92% 33.8 MB/s
DQ Read 23.2
DQ Write 55.3
DQ Mixed 33.6
27% 37.4 MB/s
56GB free
Firmware: M0CR050 Max speed: SATA 3.0 600 MB/s
Read 419
Write 282
Mixed 295
74% 332 MB/s
4K Read 22.7
4K Write 40.8
4K Mixed 20.4
82% 28 MB/s
DQ Read 138
DQ Write 84.9
DQ Mixed 39.6
49% 87.5 MB/s
151GB free
Firmware: M0C Max speed: SATA 3.0 600 MB/s
Read 455
Write 245
Mixed 338
76% 346 MB/s
4K Read 20
4K Write 32.8
4K Mixed 18.6
72% 23.8 MB/s
DQ Read 221
DQ Write 155
DQ Mixed 39
70% 139 MB/s
6,523 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,339,136 SSDs tested.


EbayUS $94.2931 mins ago.
AmazonUS $99.9922 mins ago.
NeweggUS $99.9913 hrs ago.
Send price feedback
Typical MX300 275GB Builds (Compare 15,594 builds) See popular component choices, score breakdowns and rankings.
Gaming 92%
Nuclear submarine
Desktop 79%
Workstation 63%

Motherboard: Asus Z170 PRO GAMING - $158

EDIT WITH CUSTOM PC BUILDER Value: 84% - Excellent Total price: $1,073

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.

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Solid State Drive Rankings (Price vs Performance) July 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 11 months ago.

Good (edit your comment) Add link

4 days ago.

need to free up space for better performance score.


1 month ago.

My result is 84,8%


11 months ago.

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853 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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