Average Bench: 80% (472nd of 1058)

Based on 62,855 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]

Very good average bench

The Crucial MX300 275GB averaged just 19.9% 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 251MB/s
Avg. 4K Random Write Speed 86MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 38.2%. This is a relatively wide range which indicates that the Crucial MX300 275GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 221MB/s
Avg. Sequential Mixed IO Speed 337MB/s

Average Bench

(Based on 62,855 samples)
Min Avg Max
330 Read 430 471
150 Write 382 478
157 Mixed 337 401
129 SusWrite 221 282
76.8% 342 MB/s
Min Avg Max
17.5 4K Read 24.3 28.2
40.9 4K Write 86 117
21.1 4K Mixed 34.1 41.4
126% 48.1 MB/s
Min Avg Max
136 DQ Read 217 236
117 DQ Write 265 326
95 DQ Mixed 251 306
186% 244 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
219GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 479 476 214 150 154 154 MB/s
Read 454
Write 474
Mixed 396
SusWrite 271
90% 399 MB/s
4K Read 26.6
4K Write 92.5
4K Mixed 37
137% 52 MB/s
DQ Read 233
DQ Write 325
DQ Mixed 303
222% 287 MB/s
147GB free (System drive)
Firmware: M0CR070
SusWrite @10s intervals: 336 384 306 145 144 149 MB/s
Read 425
Write 386
Mixed 352
SusWrite 244
79% 352 MB/s
4K Read 18.8
4K Write 66.7
4K Mixed 26.5
98% 37.3 MB/s
DQ Read 233
DQ Write 233
DQ Mixed 249
183% 238 MB/s
29GB free
Firmware: M0CR070
SusWrite @10s intervals: 244 146 145 92 130 64 MB/s
Read 444
Write 439
Mixed 385
SusWrite 137
79% 351 MB/s
4K Read 26.2
4K Write 83.5
4K Mixed 24.8
116% 44.8 MB/s
DQ Read 142
DQ Write 150
DQ Mixed 108
91% 133 MB/s
205GB free (System drive)
Firmware: M0CR021
SusWrite @10s intervals: 62 131 136 139 141 139 MB/s
Read 432
Write 435
Mixed 372
SusWrite 124
76% 341 MB/s
4K Read 21.9
4K Write 2.8
4K Mixed 2.5
38% 9.07 MB/s
62,855 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 55,018,064 SSDs tested.


MSRP ≈ $70 @ launch in Jun '16
EbayUS $609 days
AmazonUS $1808 months
Send price feedback
Typical MX300 275GB Builds (Compare 26,025 builds) See popular component choices, score breakdowns and rankings.
Gaming 71%
Desktop 88%
Aircraft carrier
Workstation 61%

Motherboard: Asus Z170 PRO GAMING - $295

EDIT WITH CUSTOM PC BUILDER Value: 90% - Excellent Total price: $865

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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Solid State Drive Rankings (Price vs Performance) May 2022 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 5 years ago.


5 years ago.

1058 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 i5-12600K $278Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-12400F $160Nvidia RTX 3070 $500Samsung 850 Evo 120GB $200
Intel Core i7-12700K $334Nvidia RTX 3050 $250Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3200 C16 2x8GB $68SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $72SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $470SanDisk Ultra Fit 32GB $16
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