Average Bench: 78.4% (496th of 1058)

Based on 61,493 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 21.5% 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 241MB/s
Avg. 4K Random Write Speed 83.3MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 39.6%. 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 337MB/s

Average Bench

(Based on 61,493 samples)
Min Avg Max
330 Read 430 471
151 Write 377 477
156 Mixed 337 400
128 SusWrite 212 265
76% 339 MB/s
Min Avg Max
15.8 4K Read 23.9 28.1
39.5 4K Write 83.3 113
19 4K Mixed 33.4 41.2
123% 46.9 MB/s
Min Avg Max
122 DQ Read 214 236
99.6 DQ Write 257 326
44.8 DQ Mixed 241 307
180% 237 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
155GB free (System drive)
Firmware: M0CR040
SusWrite @10s intervals: 460 428 214 143 153 153 MB/s
Read 464
Write 474
Mixed 400
SusWrite 258
90% 399 MB/s
4K Read 28.3
4K Write 113
4K Mixed 41.6
156% 60.9 MB/s
DQ Read 233
DQ Write 324
DQ Mixed 305
223% 287 MB/s
138GB free
Firmware: M0CR021
SusWrite @10s intervals: 475 460 155 135 135 138 MB/s
Read 470
Write 474
Mixed 383
SusWrite 250
88% 394 MB/s
4K Read 27.7
4K Write 118
4K Mixed 40.3
156% 61.9 MB/s
DQ Read 235
DQ Write 325
DQ Mixed 270
207% 277 MB/s
177GB free (System drive)
Firmware: M0CR040
SusWrite @10s intervals: 304 336 317 165 144 144 MB/s
Read 432
Write 422
Mixed 362
SusWrite 235
82% 363 MB/s
4K Read 23.4
4K Write 106
4K Mixed 40
143% 56.3 MB/s
DQ Read 235
DQ Write 325
DQ Mixed 304
223% 288 MB/s
351GB free
Firmware: M0CR060
SusWrite @10s intervals: 289 150 140 143 150 142 MB/s
Read 507
Write 404
Mixed 371
SusWrite 169
81% 363 MB/s
4K Read 27.8
4K Write 117
4K Mixed 30.6
143% 58.4 MB/s
DQ Read 224
DQ Write 328
DQ Mixed 51.2
102% 201 MB/s
61,493 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 45,553,673 SSDs tested.


MSRP ≈ $70 @ launch in Jun '16
EbayUS $1255 mins
AmazonUS $21021 mins
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Typical MX300 275GB Builds (Compare 20,474 builds) See popular component choices, score breakdowns and rankings.
Gaming 70%
Desktop 88%
Aircraft carrier
Workstation 60%

Motherboard: Asus Z170 PRO GAMING - $295

EDIT WITH CUSTOM PC BUILDER Value: 57% - Above average Total price: $1,210

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) August 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.

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 i5-11600K $270Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3060-Ti $400Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $31Corsair Vengeance LPX DDR4 3000 C15 2x8GB $80SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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