Average Bench: 79.1% (461st of 1030)

Based on 43,839 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 20.9% 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 84.2MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 41.3%. This is a relatively wide range which indicates that the Crucial MX300 275GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 219MB/s
Avg. Sequential Mixed IO Speed 336MB/s

Average Bench

(Based on 43,839 samples)
Min Avg Max
329 Read 432 472
155 Write 382 479
162 Mixed 336 401
138 SusWrite 219 271
76.8% 342 MB/s
Min Avg Max
17 4K Read 24 28.3
37.5 4K Write 84.2 117
20.3 4K Mixed 33.6 41.4
124% 47.3 MB/s
Min Avg Max
95.8 DQ Read 213 236
108 DQ Write 258 326
59.9 DQ Mixed 245 307
182% 239 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
190GB free
Firmware: M0CR070
SusWrite @10s intervals: 463 468 186 149 151 137 MB/s
Read 437
Write 426
Mixed 363
SusWrite 259
83% 371 MB/s
4K Read 27.4
4K Write 105
4K Mixed 39.5
148% 57.3 MB/s
DQ Read 237
DQ Write 312
DQ Mixed 305
222% 285 MB/s
119GB free (System drive)
Firmware: M0CR040
SusWrite @10s intervals: 321 332 285 168 144 142 MB/s
Read 469
Write 346
Mixed 376
SusWrite 232
80% 356 MB/s
4K Read 26
4K Write 62.9
4K Mixed 36.4
119% 41.8 MB/s
DQ Read 213
DQ Write 176
DQ Mixed 178
138% 189 MB/s
203GB free (System drive)
Firmware: M0CR070
SusWrite @10s intervals: 336 335 312 152 147 148 MB/s
Read 435
Write 379
Mixed 303
SusWrite 238
76% 339 MB/s
4K Read 21.9
4K Write 57.6
4K Mixed 29.1
101% 36.2 MB/s
DQ Read 235
DQ Write 248
DQ Mixed 235
179% 239 MB/s
32GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 143 187 104 111 75 76 MB/s
Read 376
Write 371
Mixed 326
SusWrite 116
67% 297 MB/s
4K Read 16.9
4K Write 50.5
4K Mixed 26.6
86% 31.3 MB/s
DQ Read 223
DQ Write 222
DQ Mixed 205
159% 217 MB/s
43,839 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 31,405,187 SSDs tested.


Approx. $70 @ launch in Jun '16
AmazonUS $1708 mins
EbayUS $21317 mins
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Typical MX300 275GB Builds (Compare 41,701 builds) See popular component choices, score breakdowns and rankings.
Gaming 97%
Nuclear submarine
Desktop 87%
Aircraft carrier
Workstation 92%
Nuclear submarine

Motherboard: Asus ROG STRIX B450-F GAMING - $130

EDIT WITH CUSTOM PC BUILDER Value: 56% - Above average Total price: $1,094

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 2020 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 4 years ago.


4 years ago.

1030 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 i5-9600K $193Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $45
Intel Core i5-9400F $145Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $295Nvidia RTX 2070S (Super) $500Samsung 860 Evo 250GB $43
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $66SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $64SanDisk Extreme 32GB $30
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Extreme 16GB $28
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