Average Bench: 79.4% (468th of 1040)

Based on 48,060 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 20.5% 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 253MB/s
Avg. 4K Random Write Speed 83.7MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 40.4%. 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 343MB/s

Average Bench

(Based on 48,060 samples)
Min Avg Max
328 Read 434 472
184 Write 385 477
166 Mixed 343 401
133 SusWrite 216 269
77.2% 344 MB/s
Min Avg Max
16.7 4K Read 24.1 28
38.1 4K Write 83.7 115
20 4K Mixed 33.9 41.2
124% 47.2 MB/s
Min Avg Max
128 DQ Read 220 236
105 DQ Write 262 326
96.6 DQ Mixed 253 307
187% 245 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
113GB free
Firmware: M0CR060
SusWrite @10s intervals: 288 404 435 432 433 434 MB/s
Read 429
Write 153
Mixed 387
SusWrite 404
77% 343 MB/s
4K Read 28.1
4K Write 120
4K Mixed 41.3
159% 63.2 MB/s
DQ Read 217
DQ Write 322
DQ Mixed 303
220% 281 MB/s
53GB free (System drive)
Firmware: M0CR031
SusWrite @10s intervals: 103 144 106 95 142 140 MB/s
Read 467
Write 371
Mixed 314
SusWrite 122
71% 318 MB/s
4K Read 27.6
4K Write 97
4K Mixed 36.1
139% 53.6 MB/s
DQ Read 236
DQ Write 272
DQ Mixed 303
215% 270 MB/s
88GB free (System drive)
Firmware: M0CR040
SusWrite @10s intervals: 315 151 137 87 108 137 MB/s
Read 392
Write 357
Mixed 163
SusWrite 156
60% 267 MB/s
4K Read 16.5
4K Write 74.9
4K Mixed 19.3
89% 36.9 MB/s
DQ Read 140
DQ Write 252
DQ Mixed 303
200% 232 MB/s
48,060 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 34,736,569 SSDs tested.


Approx. $70 @ launch in Jun '16
EbayUS $6121 mins
AmazonUS $1403 hrs
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Typical MX300 275GB Builds (Compare 12,773 builds) See popular component choices, score breakdowns and rankings.
Gaming 72%
Desktop 89%
Aircraft carrier
Workstation 61%

Motherboard: Asus Z170 PRO GAMING - $228

EDIT WITH CUSTOM PC BUILDER Value: 68% - Good Total price: $962

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) November 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.

1040 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 $190Nvidia RTX 3070 $500Crucial MX500 250GB $34
Intel Core i5-9400F $150Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $78
Intel Core i5-10600K $260Nvidia GTX 1650S (Super) $190Samsung 860 Evo 250GB $44
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $64SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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