Average Bench: 80.1% (399th of 1000)

Based on 28,995 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 19.9% 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 87.7MB/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 219MB/s
Avg. Sequential Mixed IO Speed 336MB/s

Average Bench

(Based on 28,995 samples)
Min Avg Max
349 Read 433 473
150 Write 385 479
157 Mixed 336 401
132 SusWrite 219 269
76.9% 343 MB/s
Min Avg Max
16.5 4K Read 24 28.6
44 4K Write 87.7 123
19.6 4K Mixed 33.7 42.1
126% 48.5 MB/s
Min Avg Max
120 DQ Read 213 236
129 DQ Write 268 326
60.9 DQ Mixed 247 306
185% 243 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
91GB free (System drive)
Firmware: M0CR070
SusWrite @10s intervals: 379 397 270 148 139 234 MB/s
Read 457
Write 470
Mixed 397
SusWrite 261
89% 396 MB/s
4K Read 26
4K Write 94.7
4K Mixed 38.1
138% 52.9 MB/s
DQ Read 237
DQ Write 314
DQ Mixed 305
222% 285 MB/s
255GB free
Firmware: M0CR070
SusWrite @10s intervals: 470 470 212 153 153 153 MB/s
Read 426
Write 392
Mixed 292
SusWrite 268
77% 345 MB/s
4K Read 15.3
4K Write 101
4K Mixed 38.2
126% 51.5 MB/s
DQ Read 236
DQ Write 312
DQ Mixed 300
219% 283 MB/s
197GB free (System drive)
Firmware: M0CR031
SusWrite @10s intervals: 179 402 407 148 127 149 MB/s
Read 449
Write 427
Mixed 378
SusWrite 235
84% 372 MB/s
4K Read 22
4K Write 81.4
4K Mixed 30
115% 44.5 MB/s
DQ Read 235
DQ Write 306
DQ Mixed 304
220% 282 MB/s
28,995 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 14,373,882 SSDs tested.


Approx. $70 @ launch in Jun '16
NeweggUS $8513 months
AmazonUS $1443 mins
EbayUS $1497 mins
Send price feedback
Typical MX300 275GB Builds (Compare 27,346 builds) See popular component choices, score breakdowns and rankings.
Gaming 68%
Battle cruiser
Desktop 71%
Workstation 66%
Battle cruiser

Motherboard: Asus PRIME B350-PLUS - $79

EDIT WITH CUSTOM PC BUILDER Value: 112% - Outstanding Total price: $570

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) May 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 2 years ago.


2 years ago.

1000 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 $356Nvidia GTX 1070 $314Samsung 850 Evo 250GB $92
AMD Ryzen 5 2600 $145Nvidia GTX 1060-6GB $208Samsung 850 Evo 500GB $99
AMD Ryzen 5 1600 $108Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $90SanDisk Extreme 64GB $128
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $651SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $73Corsair Vengeance LPX DDR4 3200 C16 2x8GB $85SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback