Average Bench: 79.7% (383rd of 980)

Based on 22,910 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 20.3% 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 245MB/s
Avg. 4K Random Write Speed 87.6MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 39%. This is a relatively wide range which indicates that the Crucial MX300 275GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 217MB/s
Avg. Sequential Mixed IO Speed 335MB/s

Average Bench

(Based on 22,910 samples)
Min Avg Max
316 Read 428 471
154 Write 380 478
157 Mixed 335 400
132 SusWrite 217 266
76.2% 340 MB/s
Min Avg Max
16.8 4K Read 24.1 28.5
39.1 4K Write 87.6 119
19.2 4K Mixed 34.1 41.6
127% 48.6 MB/s
Min Avg Max
28 DQ Read 210 236
98.4 DQ Write 262 326
35.9 DQ Mixed 245 306
182% 239 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
223GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 331 326 334 144 141 138 MB/s
Read 449
Write 363
Mixed 282
SusWrite 236
74% 333 MB/s
4K Read 28.3
4K Write 113
4K Mixed 40.6
155% 60.6 MB/s
DQ Read 235
DQ Write 270
DQ Mixed 237
183% 247 MB/s
180GB free (System drive)
Firmware: M0CR040
SusWrite @10s intervals: 419 457 230 152 151 153 MB/s
Read 388
Write 463
Mixed 394
SusWrite 260
85% 376 MB/s
4K Read 27.2
4K Write 105
4K Mixed 39.5
148% 57.4 MB/s
DQ Read 231
DQ Write 302
DQ Mixed 297
216% 277 MB/s
59GB free (System drive)
Firmware: M0CR040
SusWrite @10s intervals: 337 143 142 63 67 141 MB/s
Read 471
Write 472
Mixed 400
SusWrite 149
84% 373 MB/s
4K Read 27.3
4K Write 99
4K Mixed 39.5
144% 55.3 MB/s
DQ Read 235
DQ Write 313
DQ Mixed 303
221% 284 MB/s
143GB free (System drive)
Firmware: M0CR070
SusWrite @10s intervals: 321 230 142 141 141 140 MB/s
Read 473
Write 289
Mixed 400
SusWrite 186
75% 337 MB/s
4K Read 27.8
4K Write 85.7
4K Mixed 39.3
138% 50.9 MB/s
DQ Read 234
DQ Write 284
DQ Mixed 304
217% 274 MB/s
22,910 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 11,464,199 SSDs tested.


Approx. $70 @ launch in Jun '16
NeweggUS $859 months
EbayUS $8728 mins
AmazonUS $13420 days
Send price feedback
Typical MX300 275GB Builds (Compare 22,864 builds) See popular component choices, score breakdowns and rankings.
Gaming 68%
Battle cruiser
Desktop 70%
Workstation 66%
Battle cruiser

Motherboard: Asus PRIME B350-PLUS - $85

EDIT WITH CUSTOM PC BUILDER Value: 100% - Outstanding Total price: $675

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) January 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 2 years ago.


2 years ago.

980 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.
Intel Core i7-8700K $360Nvidia GTX 1070 $320Samsung 850 Evo 250GB $70
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $110
Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $115SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $780SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $125SanDisk Extreme 16GB $22
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