Average Bench: 81.1% (271st of 947)

Based on 15,250 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 18.8% 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 245MB/s
Avg. 4K Random Write Speed 91.4MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial MX300 275GB is 38.5%. This is a relatively wide range which indicates that the Crucial MX300 275GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 218MB/s
Avg. 4K-64Thread Read Speed 209MB/s

Average Bench

(Based on 15,250 samples)
Min Avg Max
319 Read 434 471
168 Write 383 478
167 Mixed 339 400
139 SusWrite 218 265
77% 343 MB/s
Min Avg Max
17.8 4K Read 24.6 28.7
42.3 4K Write 91.4 124
22.1 4K Mixed 35 42
131% 50.3 MB/s
Min Avg Max
25.7 DQ Read 209 237
86.9 DQ Write 262 326
35.6 DQ Mixed 245 306
182% 239 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
157GB free
Firmware: M0CR021
SusWrite @10s intervals: 325 368 329 140 139 140 MB/s
Read 430
Write 443
Mixed 360
SusWrite 240
83% 368 MB/s
4K Read 20.3
4K Write 119
4K Mixed 35
139% 58.1 MB/s
DQ Read 234
DQ Write 324
DQ Mixed 269
206% 276 MB/s
114GB free
Firmware: M0CR031
SusWrite @10s intervals: 452 453 214 150 150 151 MB/s
Read 444
Write 452
Mixed 386
SusWrite 262
87% 386 MB/s
4K Read 23.4
4K Write 69.9
4K Mixed 32.3
114% 41.9 MB/s
DQ Read 233
DQ Write 243
DQ Mixed 245
182% 240 MB/s
191GB free (System drive)
Firmware: M0CR021
SusWrite @10s intervals: 372 397 280 139 133 108 MB/s
Read 388
Write 342
Mixed 312
SusWrite 238
72% 320 MB/s
4K Read 12.8
4K Write 59.5
4K Mixed 18.7
75% 30.3 MB/s
DQ Read 24.6
DQ Write 77.4
DQ Mixed 42.6
35% 48.2 MB/s
15,250 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,497,180 SSDs tested.


Approx. $70 @ launch in Jun '16
EbayUS $706 mins
NeweggUS $852 months
AmazonUS $11933 mins
Send price feedback
Typical MX300 275GB Builds (Compare 15,321 builds) See popular component choices, score breakdowns and rankings.
Gaming 68%
Battle cruiser
Desktop 71%
Workstation 66%
Battle cruiser

Motherboard: Asus PRIME B350-PLUS - $94

EDIT WITH CUSTOM PC BUILDER Value: 90% - Excellent Total price: $774

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) July 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC.

Instant performance that lasts....

Added 22 months ago.


22 months ago.

947 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 $340Nvidia GTX 1070 $400Samsung 850 Evo 250GB $85
AMD Ryzen 5 1600 $160Nvidia GTX 1060-6GB $290Samsung 850 Evo 500GB $121
Intel Core i5-8600K $225AMD RX 480 $280Samsung 850 Pro 256GB $160
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $160SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $951SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback