Average Bench: 78.6% (491st of 1053)

Based on 52,250 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 21.4% 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 82.2MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 39.5%. This is a relatively wide range which indicates that the Crucial MX300 275GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 216MB/s
Avg. Sequential Mixed IO Speed 338MB/s

Average Bench

(Based on 52,250 samples)
Min Avg Max
336 Read 433 474
157 Write 385 478
163 Mixed 338 402
140 SusWrite 216 268
76.9% 343 MB/s
Min Avg Max
16.9 4K Read 24 28.1
36.9 4K Write 82.2 112
19.7 4K Mixed 33.5 41.2
123% 46.6 MB/s
Min Avg Max
100 DQ Read 212 236
86.1 DQ Write 255 326
43.4 DQ Mixed 245 307
181% 237 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
148GB free (System drive)
Firmware: M0CR021
SusWrite @10s intervals: 449 367 135 135 135 125 MB/s
Read 448
Write 455
Mixed 366
SusWrite 224
84% 374 MB/s
4K Read 27.5
4K Write 107
4K Mixed 40
149% 58.1 MB/s
DQ Read 234
DQ Write 320
DQ Mixed 275
209% 277 MB/s
54GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 323 203 146 143 135 143 MB/s
Read 466
Write 304
Mixed 283
SusWrite 182
69% 309 MB/s
4K Read 27.1
4K Write 92.8
4K Mixed 38.7
140% 52.9 MB/s
DQ Read 235
DQ Write 265
DQ Mixed 244
185% 248 MB/s
97GB free (System drive)
Firmware: M0CR031
SusWrite @10s intervals: 224 134 135 135 147 130 MB/s
Read 457
Write 303
Mixed 305
SusWrite 151
68% 304 MB/s
4K Read 27.2
4K Write 86
4K Mixed 31.7
127% 48.3 MB/s
DQ Read 234
DQ Write 61
DQ Mixed 13.7
45% 103 MB/s
52,250 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 39,985,369 SSDs tested.


MSRP ≈ $70 @ launch in Jun '16
AmazonUS $1556 days
Send price feedback
Typical MX300 275GB Builds (Compare 16,938 builds) See popular component choices, score breakdowns and rankings.
Gaming 71%
Desktop 89%
Aircraft carrier
Workstation 61%

Motherboard: Asus Z170 PRO GAMING - $228

EDIT WITH CUSTOM PC BUILDER Value: 60% - Good Total price: $1,051

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) March 2021 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.

1053 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 i5-10400F $149Nvidia RTX 3060-Ti $400Crucial MX500 250GB $48
Intel Core i5-10600K $224Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i7-10700K $325Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $50
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $73SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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