Average Bench: 79.3% (347th of 956)

Based on 18,616 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 20.7% 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 88.1MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 37.7%. This is a relatively wide range which indicates that the Crucial MX300 275GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 213MB/s
Avg. Sequential Mixed IO Speed 335MB/s

Average Bench

(Based on 18,616 samples)
Min Avg Max
324 Read 428 471
192 Write 383 477
162 Mixed 335 400
133 SusWrite 213 265
76.2% 340 MB/s
Min Avg Max
16.8 4K Read 23.7 28.5
46 4K Write 88.1 118
20.5 4K Mixed 33.8 41.4
126% 48.5 MB/s
Min Avg Max
26.5 DQ Read 208 236
101 DQ Write 261 326
37.2 DQ Mixed 245 307
182% 238 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
41GB free (System drive)
Firmware: M0CR050
SusWrite @10s intervals: 391 471 295 154 154 153 MB/s
Read 466
Write 432
Mixed 376
SusWrite 270
87% 386 MB/s
4K Read 28.6
4K Write 114
4K Mixed 41.6
157% 61.6 MB/s
DQ Read 234
DQ Write 322
DQ Mixed 304
223% 287 MB/s
143GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 471 477 177 156 155 156 MB/s
Read 458
Write 479
Mixed 401
SusWrite 265
90% 401 MB/s
4K Read 27.4
4K Write 102
4K Mixed 39.3
146% 56.1 MB/s
DQ Read 235
DQ Write 324
DQ Mixed 301
222% 287 MB/s
117GB free
Firmware: M0CR031
SusWrite @10s intervals: 387 415 266 148 147 148 MB/s
Read 461
Write 472
Mixed 399
SusWrite 252
89% 396 MB/s
4K Read 26.1
4K Write 91.4
4K Mixed 38.3
137% 51.9 MB/s
DQ Read 235
DQ Write 324
DQ Mixed 305
224% 288 MB/s
36GB free (System drive)
Firmware: M0CR031
SusWrite @10s intervals: 464 235 148 147 114 109 MB/s
Read 462
Write 475
Mixed 399
SusWrite 203
86% 385 MB/s
4K Read 25.7
4K Write 78
4K Mixed 35.9
126% 46.5 MB/s
DQ Read 234
DQ Write 326
DQ Mixed 301
222% 287 MB/s
18,616 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 8,642,096 SSDs tested.


Approx. $70 @ launch in Jun '16
NeweggUS $855 months
EbayUS $8911 mins
AmazonUS $12542 mins
Send price feedback
Typical MX300 275GB Builds (Compare 17,951 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: 94% - Outstanding Total price: $728

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) September 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 - 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.

956 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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AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $269Samsung 850 Evo 500GB $115
Intel Core i5-8600K $260AMD RX 480 $280Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $139SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $155SanDisk Ultra Fit 32GB $11
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