Average Bench: 79.6% (432nd of 1011)

Based on 36,180 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 20.3% 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 247MB/s
Avg. 4K Random Write Speed 87.6MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 39.1%. This is a relatively wide range which indicates that the Crucial MX300 275GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 212MB/s
Avg. Sequential Mixed IO Speed 333MB/s

Average Bench

(Based on 36,180 samples)
Min Avg Max
340 Read 433 471
154 Write 381 477
161 Mixed 333 400
131 SusWrite 212 266
76.1% 340 MB/s
Min Avg Max
17.2 4K Read 24.3 28.5
47.1 4K Write 87.6 119
19 4K Mixed 34 41.7
127% 48.6 MB/s
Min Avg Max
113 DQ Read 213 236
145 DQ Write 265 326
69.5 DQ Mixed 247 307
184% 242 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
70GB free (System drive)
Firmware: M0CR031
SusWrite @10s intervals: 436 236 143 136 139 100 MB/s
Read 461
Write 474
Mixed 397
SusWrite 198
86% 382 MB/s
4K Read 28.2
4K Write 109
4K Mixed 40.7
153% 59.3 MB/s
DQ Read 232
DQ Write 313
DQ Mixed 306
222% 284 MB/s
30GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 128 228 163 149 152 147 MB/s
Read 463
Write 480
Mixed 401
SusWrite 161
84% 376 MB/s
4K Read 27.7
4K Write 109
4K Mixed 40.7
152% 59 MB/s
DQ Read 233
DQ Write 322
DQ Mixed 305
223% 287 MB/s
142GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 289 301 314 164 143 147 MB/s
Read 456
Write 305
Mixed 387
SusWrite 226
77% 344 MB/s
4K Read 23.7
4K Write 47.7
4K Mixed 33.2
104% 34.9 MB/s
DQ Read 235
DQ Write 248
DQ Mixed 283
201% 255 MB/s
31GB free (System drive)
Firmware: M0CR070
SusWrite @10s intervals: 329 253 138 138 136 136 MB/s
Read 360
Write 291
Mixed 327
SusWrite 188
65% 292 MB/s
4K Read 26.1
4K Write 72.7
4K Mixed 36.1
124% 45 MB/s
DQ Read 206
DQ Write 160
DQ Mixed 166
129% 178 MB/s
36,180 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 19,849,350 SSDs tested.


Approx. $70 @ launch in Jun '16
AmazonUS $1203 mins
EbayUS $1379 mins
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Typical MX300 275GB Builds (Compare 34,193 builds) See popular component choices, score breakdowns and rankings.
Gaming 55%
Desktop 63%
Workstation 54%

Motherboard: Asus PRIME B350-PLUS - $85

EDIT WITH CUSTOM PC BUILDER Value: 55% - Above average Total price: $655

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) December 2019 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 3 years ago.


3 years ago.

1011 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 i5-9400F $145Nvidia GTX 1660S (Super) $244Crucial MX500 250GB $39
Intel Core i5-9600K $200Nvidia RTX 2060 $324Samsung 850 Evo 120GB $150
Intel Core i7-9700K $360AMD RX 590 $180Samsung 860 Evo 250GB $54
Seagate Barracuda 1TB (2016) $32Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $58SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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