Average Bench: 68.5% (387th of 908)

Based on 15,582 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 22.8MB/s
Avg. Sequential Read Speed 462MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 32.8%. 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 26.2MB/s
Avg. 4K-64Thread Read Speed 130MB/s

Average Bench

(Based on 15,582 samples)
Min Avg Max
363 Read 462 484
180 Write 297 339
162 Mixed 307 339
78.6% 355 MB/s
Min Avg Max
15.9 4K Read 22.8 27.5
31.4 4K Write 58.6 80.9
9.74 4K Mixed 17.5 24.3
88% 33 MB/s
Min Avg Max
20.2 DQ Read 130 230
38.7 DQ Write 133 222
9.3 DQ Mixed 26.2 40.4
48.7% 96.3 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
56GB free
Firmware: M0CR040 Max speed: SATA 3.0 600 MB/s
Read 465
Write 329
Mixed 336
84% 377 MB/s
4K Read 23
4K Write 73.3
4K Mixed 12.3
89% 36.2 MB/s
DQ Read 210
DQ Write 218
DQ Mixed 35.1
76% 154 MB/s
125GB free
Firmware: M0CR040 Max speed: SATA 3.0 600 MB/s
Read 484
Write 332
Mixed 336
85% 384 MB/s
4K Read 27
4K Write 75.5
4K Mixed 14.1
99% 38.9 MB/s
DQ Read 27.7
DQ Write 223
DQ Mixed 13.9
44% 88.2 MB/s
37GB free
Firmware: M0CR040 Max speed: SATA 3.0 600 MB/s
Read 458
Write 321
Mixed 336
82% 372 MB/s
4K Read 18.5
4K Write 45.7
4K Mixed 20
78% 28.1 MB/s
DQ Read 228
DQ Write 206
DQ Mixed 39.8
78% 158 MB/s
138GB free
Firmware: M0CR021 Max speed: SATA 3.0 600 MB/s
Read 459
Write 322
Mixed 333
82% 371 MB/s
4K Read 20.2
4K Write 62.1
4K Mixed 9.9
76% 30.7 MB/s
DQ Read 215
DQ Write 191
DQ Mixed 10.5
61% 139 MB/s
149GB free
Firmware: M0CR021 Max speed: SATA 3.0 600 MB/s
Read 472
Write 296
Mixed 311
80% 360 MB/s
4K Read 18.4
4K Write 31.1
4K Mixed 10.5
58% 20 MB/s
DQ Read 188
DQ Write 134
DQ Mixed 29.2
58% 117 MB/s
15,582 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,038,103 SSDs tested.


Approx. $70 @ launch in Jun '16
EbayUS $8210 mins
AmazonUS $903 mins
NeweggUS $901 day
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Typical MX300 275GB Builds (Compare 18,624 builds) See popular component choices, score breakdowns and rankings.
Gaming 93%
Nuclear submarine
Desktop 79%
Workstation 62%

Motherboard: Asus Z170 PRO GAMING - $157

EDIT WITH CUSTOM PC BUILDER Value: 83% - Excellent Total price: $1,187

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) March 2018 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]

Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


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

Instant performance that lasts....

Added 18 months ago.


5 months ago.

My result is 84,8%


18 months ago.


4 months ago.

Best in budget

908 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.

 Frequently Asked Questions

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