Average Bench: 65.9% (713th of 1058)

Based on 3,636 user benchmarks.  Models: M4-CT512M4SSD2, M4-CT512 M4SSD2, M4-CT512M4SSD1, M4-CT512 M4-CT512M4SSD2

Above average average bench

The Crucial M4 512GB averaged 34.0% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Write Speed 71.8MB/s
Avg. Sequential Read Speed 451MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial M4 512GB is 36.4%. This is a relatively wide range which indicates that the Crucial M4 512GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 202MB/s
Avg. 4K-64Thread Read Speed 139MB/s

Average Bench

(Based on 3,636 samples)
Min Avg Max
333 Read 451 501
184 Write 245 282
184 Mixed 269 303
83.1 SusWrite 202 267
64.9% 292 MB/s
Min Avg Max
11.8 4K Read 19.5 23.5
19.4 4K Write 71.8 107
13.4 4K Mixed 23 27.9
97% 38.1 MB/s
Min Avg Max
85.3 DQ Read 139 196
65.7 DQ Write 142 236
25.8 DQ Mixed 49.1 54.6
62.1% 110 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
290GB free
Firmware: 040H
SusWrite @10s intervals: 258 219 218 258 260 258 MB/s
Read 501
Write 252
Mixed 284
SusWrite 245
71% 320 MB/s
4K Read 23.5
4K Write 104
4K Mixed 28.5
127% 52 MB/s
DQ Read 121
DQ Write 115
DQ Mixed 50.3
56% 95.3 MB/s
27GB free
Firmware: 040H
SusWrite @10s intervals: 139 51 39 51 64 64 MB/s
Read 490
Write 278
Mixed 294
SusWrite 67.9
62% 283 MB/s
4K Read 21.3
4K Write 84.2
4K Mixed 24.6
108% 43.4 MB/s
DQ Read 194
DQ Write 226
DQ Mixed 50.9
82% 157 MB/s
444GB free (System drive)
Firmware: 070H
SusWrite @10s intervals: 241 237 243 232 237 243 MB/s
Read 387
Write 262
Mixed 276
SusWrite 239
65% 291 MB/s
4K Read 10.6
4K Write 41.5
4K Mixed 13.7
56% 21.9 MB/s
DQ Read 192
DQ Write 55.3
DQ Mixed 51.1
57% 99.6 MB/s
3,636 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,208,176 SSDs tested.


AmazonUS $742 years
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Typical M4 512GB Builds (Compare 2,649 builds) See popular component choices, score breakdowns and rankings.
Gaming 83%
Aircraft carrier
Desktop 80%
Aircraft carrier
Workstation 73%

Motherboard: Asus RAMPAGE IV EXTREME - $589

EDIT WITH CUSTOM PC BUILDER Value: 53% - Above average Total price: $1,663

Popular M4 512GB 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) September 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 88SS9174-BLD2. Flash Memory: Micron Synchronous 25nm MLC

Added n/a 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 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $72G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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