Average Bench: 80.6% (312th of 956)

Based on 20,052 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]


Very good average bench

The Crucial MX300 275GB averaged just 19.4% 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 244MB/s
Avg. 4K Random Write Speed 87.8MB/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 222MB/s
Avg. 4K-64Thread Read Speed 213MB/s

Average Bench

(Based on 20,052 samples)
Min Avg Max
333 Read 432 471
218 Write 392 477
192 Mixed 343 400
139 SusWrite 222 265
77.8% 347 MB/s
Min Avg Max
17.1 4K Read 24.4 28.7
40 4K Write 87.8 123
20.2 4K Mixed 34.5 42.2
128% 48.9 MB/s
Min Avg Max
28.6 DQ Read 213 236
93.6 DQ Write 264 326
36.2 DQ Mixed 244 307
182% 240 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
207GB free (System drive)
Firmware: M0CR040
SusWrite @10s intervals: 325 340 327 148 149 146 MB/s
Read 459
Write 397
Mixed 338
SusWrite 239
80% 358 MB/s
4K Read 25.1
4K Write 89.6
4K Mixed 35.5
131% 50.1 MB/s
DQ Read 235
DQ Write 262
DQ Mixed 250
188% 249 MB/s
185GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 330 321 320 165 148 151 MB/s
Read 462
Write 414
Mixed 327
SusWrite 239
81% 360 MB/s
4K Read 25.9
4K Write 79.2
4K Mixed 36.7
128% 47.3 MB/s
DQ Read 234
DQ Write 214
DQ Mixed 260
185% 236 MB/s
206GB free (System drive)
Firmware: M0CR021
SusWrite @10s intervals: 334 343 314 134 133 142 MB/s
Read 455
Write 332
Mixed 374
SusWrite 233
78% 348 MB/s
4K Read 23.3
4K Write 71.3
4K Mixed 36.4
120% 43.7 MB/s
DQ Read 234
DQ Write 273
DQ Mixed 259
194% 256 MB/s
111GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 122 134 132 130 131 131 MB/s
Read 316
Write 110
Mixed 170
SusWrite 130
40% 182 MB/s
4K Read 17.9
4K Write 32
4K Mixed 22.9
73% 24.3 MB/s
DQ Read 190
DQ Write 105
DQ Mixed 137
105% 144 MB/s
20,052 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 8,001,532 SSDs tested.


Approx. $70 @ launch in Jun '16
NeweggUS $854 months
EbayUS $10940 mins
AmazonUS $12527 mins
Send price feedback
Typical MX300 275GB Builds (Compare 16,506 builds) See popular component choices, score breakdowns and rankings.
Gaming 68%
Battle cruiser
Desktop 70%
Workstation 65%
Battle cruiser

Motherboard: Asus PRIME B350-PLUS - $85

EDIT WITH CUSTOM PC BUILDER Value: 94% - Outstanding Total price: $715

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) August 2018 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 23 months ago.


23 months ago.

956 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

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The Best.
Intel Core i7-8700K $330Nvidia GTX 1070 $370Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $120
Intel Core i5-8600K $240AMD RX 480 $280Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $155SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $901SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $175SanDisk Ultra Fit 32GB $12
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