Average Bench: 79.4% (491st of 1071)

Based on 67,541 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 20.6% 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 84.7MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 41.1%. This is a relatively wide range which indicates that the Crucial MX300 275GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 217MB/s
Avg. Sequential Mixed IO Speed 339MB/s

Average Bench

(Based on 67,541 samples)
Min Avg Max
347 Read 433 472
150 Write 380 478
159 Mixed 339 402
122 SusWrite 217 273
76.8% 342 MB/s
Min Avg Max
15.7 4K Read 24.2 28.2
34.7 4K Write 84.7 117
18.4 4K Mixed 33.9 41.4
125% 47.6 MB/s
Min Avg Max
123 DQ Read 216 236
83 DQ Write 257 326
59.7 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%
135GB free
Firmware: M0CR070
SusWrite @10s intervals: 474 440 199 153 153 154 MB/s
Read 476
Write 233
Mixed 368
SusWrite 262
75% 335 MB/s
4K Read 25.6
4K Write 103
4K Mixed 38.3
142% 55.7 MB/s
DQ Read 235
DQ Write 325
DQ Mixed 305
223% 288 MB/s
193GB free
Firmware: M0CR021
SusWrite @10s intervals: 373 378 279 131 130 130 MB/s
Read 450
Write 408
Mixed 326
SusWrite 237
80% 355 MB/s
4K Read 27.7
4K Write 109
4K Mixed 39.9
151% 58.8 MB/s
DQ Read 235
DQ Write 282
DQ Mixed 227
180% 248 MB/s
66GB free
Firmware: M0CR060
SusWrite @10s intervals: 326 322 221 144 137 136 MB/s
Read 419
Write 443
Mixed 373
SusWrite 214
82% 363 MB/s
4K Read 21.4
4K Write 57.9
4K Mixed 30.8
103% 36.7 MB/s
DQ Read 233
DQ Write 264
DQ Mixed 300
212% 266 MB/s
67,541 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 63,628,876 SSDs tested.


MSRP ≈ $70 @ launch in Jun '16
AmazonUS $1508 mins
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Typical MX300 275GB Builds (Compare 9,206 builds) See popular component choices, score breakdowns and rankings.
Gaming 68%
Battle cruiser
Desktop 86%
Aircraft carrier
Workstation 58%

Motherboard: Asus Z170 PRO GAMING - $295

EDIT WITH CUSTOM PC BUILDER Value: 75% - Very good Total price: $857

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) February 2023 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 6 years ago.


6 years ago.

1071 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 i5-13600K $300Nvidia RTX 3060 $359Crucial MX500 250GB $37
Intel Core i5-12400F $160Nvidia RTX 3060-Ti $457Samsung 850 Evo 120GB $106
Intel Core i5-12600K $223Nvidia RTX 4070-Ti $850Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $47SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $49SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $417SanDisk Ultra Fit 32GB $16
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