Average Bench: 69.1% - 329th / 836

Based on 2,635 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 30.8% 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 22.6MB/s
Avg. 4K Random Write Speed 60.7MB/s
See where your SSD ranks →

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 31.2%. 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 26.2MB/s
Avg. 4K-64Thread Read Speed 137MB/s

Average Bench

(Based on 2,635 samples)
Min Avg Max
400 Read 462 484
215 Write 295 336
199 Mixed 311 339
78.7% 356 MB/s
Min Avg Max
16 4K Read 22.6 27.8
26.9 4K Write 60.7 86.4
9.61 4K Mixed 17.5 24.5
88.8% 33.6 MB/s
Min Avg Max
20.4 DQ Read 137 230
43.5 DQ Write 147 224
9.41 DQ Mixed 26.2 40.2
51.7% 104 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
151GB free
Firmware: M0CR040 Max speed: SATA 3.0 600 MB/s
Read 481
Write 326
Mixed 337
84% 381 MB/s
4K Read 26.3
4K Write 71.5
4K Mixed 24.5
109% 40.8 MB/s
DQ Read 230
DQ Write 211
DQ Mixed 40.6
80% 161 MB/s
204GB free
Firmware: M0CR031 Max speed: SATA 3.0 600 MB/s
Read 480
Write 290
Mixed 307
79% 359 MB/s
4K Read 28.3
4K Write 75.8
4K Mixed 25.2
115% 43.1 MB/s
DQ Read 209
DQ Write 205
DQ Mixed 40.1
76% 151 MB/s
200GB free
Firmware: M0CR031 Max speed: SATA 3.0 600 MB/s
Read 481
Write 331
Mixed 337
85% 383 MB/s
4K Read 26.7
4K Write 74.6
4K Mixed 20.1
106% 40.5 MB/s
DQ Read 27.6
DQ Write 214
DQ Mixed 13.8
42% 85 MB/s
93GB free
Firmware: M0CR021 Max speed: SATA 3.0 600 MB/s
Read 478
Write 334
Mixed 333
84% 382 MB/s
4K Read 22
4K Write 47.6
4K Mixed 11.7
74% 27.1 MB/s
DQ Read 220
DQ Write 198
DQ Mixed 11.4
63% 143 MB/s
218GB free
Firmware: M0CR040 Max speed: SATA 3.0 600 MB/s
Read 367
Write 149
Mixed 192
52% 236 MB/s
4K Read 26.1
4K Write 52.9
4K Mixed 22.9
97% 34 MB/s
DQ Read 187
DQ Write 107
DQ Mixed 35.4
56% 110 MB/s

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,131,577 SSDs tested.


AmazonUS $94.9942 secs ago.
NeweggUS $94.9922 mins ago.
EbayUS $99.955 mins ago.
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Typical MX300 275GB Builds (Compare 10,898 builds) See popular component choices, score breakdowns and rankings.
Gaming 108%
Desktop 86%
Aircraft carrier
Workstation 69%
Battle cruiser

Motherboard: Asus Z170 PRO GAMING - $153

EDIT WITH CUSTOM PC BUILDER Value: 101% - Outstanding Total price: $1,043

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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How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
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  • - 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.
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  • - 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) February 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 5 months ago.


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836 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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