Average Bench: 80.2% (347th of 964)

Based on 20,405 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 19.7% 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 252MB/s
Avg. 4K Random Write Speed 87.9MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 39.9%. 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 20,405 samples)
Min Avg Max
331 Read 433 472
169 Write 386 475
158 Mixed 338 400
139 SusWrite 216 263
77% 343 MB/s
Min Avg Max
16.4 4K Read 24.2 28.7
39.5 4K Write 87.9 122
19.2 4K Mixed 34.4 42.1
127% 48.8 MB/s
Min Avg Max
104 DQ Read 215 236
128 DQ Write 268 326
56.8 DQ Mixed 252 307
187% 245 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
93GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 439 457 205 149 153 150 MB/s
Read 472
Write 439
Mixed 380
SusWrite 259
87% 388 MB/s
4K Read 28.6
4K Write 110
4K Mixed 40.9
154% 59.8 MB/s
DQ Read 234
DQ Write 319
DQ Mixed 303
222% 286 MB/s
60GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 414 421 250 151 148 148 MB/s
Read 459
Write 450
Mixed 380
SusWrite 255
87% 386 MB/s
4K Read 27.1
4K Write 99.9
4K Mixed 38.6
143% 55.2 MB/s
DQ Read 236
DQ Write 313
DQ Mixed 299
219% 283 MB/s
79GB free (System drive)
Firmware: M0CR021
SusWrite @10s intervals: 454 427 118 134 136 123 MB/s
Read 462
Write 447
Mixed 381
SusWrite 232
85% 380 MB/s
4K Read 25.9
4K Write 88.1
4K Mixed 36
132% 50 MB/s
DQ Read 235
DQ Write 310
DQ Mixed 267
203% 271 MB/s
51GB free (System drive)
Firmware: M0CR060
SusWrite @10s intervals: 413 292 136 140 115 135 MB/s
Read 365
Write 314
Mixed 357
SusWrite 205
70% 310 MB/s
4K Read 18.9
4K Write 50.5
4K Mixed 28.8
92% 32.7 MB/s
DQ Read 234
DQ Write 284
DQ Mixed 267
199% 262 MB/s
20,405 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 9,690,586 SSDs tested.


Approx. $70 @ launch in Jun '16
NeweggUS $857 months
EbayUS $10128 mins
AmazonUS $14610 mins
Send price feedback
Typical MX300 275GB Builds (Compare 19,621 builds) See popular component choices, score breakdowns and rankings.
Gaming 67%
Battle cruiser
Desktop 69%
Battle cruiser
Workstation 65%

Motherboard: Asus PRIME B350-PLUS - $85

EDIT WITH CUSTOM PC BUILDER Value: 100% - Outstanding Total price: $660

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 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 2 years ago.


2 years ago.

964 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 i7-8700K $359Nvidia GTX 1070 $340Samsung 850 Evo 250GB $77
AMD Ryzen 5 1600 $130Nvidia GTX 1060-6GB $234Samsung 850 Evo 500GB $100
Intel Core i5-8600K $237AMD RX 480 $280Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $130SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $12
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