Average Bench: 79.6% (434th of 1011)

Based on 34,658 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]


Good average bench

The Crucial MX300 275GB averaged 20.4% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Crucial MX300 275GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 238MB/s
Avg. 4K Random Write Speed 87.2MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 37.1%. This is a relatively wide range which indicates that the Crucial MX300 275GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 214MB/s
Avg. Sequential Mixed IO Speed 336MB/s

Average Bench

(Based on 34,658 samples)
Min Avg Max
326 Read 431 472
153 Write 383 477
160 Mixed 336 399
132 SusWrite 214 264
76.4% 341 MB/s
Min Avg Max
16.9 4K Read 24.2 28.4
39.9 4K Write 87.2 118
20.3 4K Mixed 34.2 41.7
127% 48.5 MB/s
Min Avg Max
76.6 DQ Read 210 236
103 DQ Write 256 325
37.6 DQ Mixed 238 307
178% 235 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
33GB free
Firmware: M0CR040
SusWrite @10s intervals: 468 267 154 155 147 90 MB/s
Read 478
Write 482
Mixed 404
SusWrite 213
88% 394 MB/s
4K Read 28.3
4K Write 112
4K Mixed 41.4
155% 60.4 MB/s
DQ Read 234
DQ Write 323
DQ Mixed 309
225% 289 MB/s
27GB free (System drive)
Firmware: M0CR031
SusWrite @10s intervals: 359 159 145 140 143 133 MB/s
Read 454
Write 449
Mixed 372
SusWrite 180
82% 363 MB/s
4K Read 26
4K Write 106
4K Mixed 39.8
147% 57.3 MB/s
DQ Read 236
DQ Write 325
DQ Mixed 306
224% 289 MB/s
116GB free (System drive)
Firmware: M0CR031
SusWrite @10s intervals: 400 249 150 145 140 136 MB/s
Read 462
Write 449
Mixed 392
SusWrite 203
84% 376 MB/s
4K Read 27.5
4K Write 88.2
4K Mixed 38.4
138% 51.4 MB/s
DQ Read 219
DQ Write 184
DQ Mixed 199
150% 201 MB/s
34,658 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 18,505,215 SSDs tested.


Approx. $70 @ launch in Jun '16
AmazonUS $1209 mins
EbayUS $14013 mins
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Typical MX300 275GB Builds (Compare 32,693 builds) See popular component choices, score breakdowns and rankings.
Gaming 54%
Desktop 63%
Workstation 54%

Motherboard: Asus PRIME B350-PLUS - $100

EDIT WITH CUSTOM PC BUILDER Value: 59% - Above average Total price: $610

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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) October 2019 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 - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.


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

Instant performance that lasts...

Added 3 years ago.


3 years ago.

1011 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

 Best User Rated

The Best.
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Intel Core i5-9600K $240Nvidia GTX 1660-Ti $270Samsung 850 Evo 500GB $107
Intel Core i7-9700K $350Nvidia RTX 2060 $349Samsung 850 Pro 256GB $200
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
Seagate Barracuda 3TB (2016) $78G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $70SanDisk Ultra Fit 32GB $14
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