Average Bench: 60.4% (781st of 1057)

Based on 30,265 user benchmarks.  Models: M4-CT128M4SSD2, M4-CT128 M4-CT128M4SSD2, M4-CT128 M4SSD2, M4-CT128M4SSD1, M4-CT128 M4SSD1

The 128GB Crucial M4 is almost three years old, an extremely long time in SSD land. With peak and average sequential read/write speeds of 500/194 and 429/185 the 128GB M4 matches the group leaders at reading but lags by 60% at writing. Comparing the 128GB and 256GB versions of the M4 shows that the two drives have a very similar performance profile. This suggests that both drives have the same number of NAND channels which bodes well for the smaller capacity drive as a lot of other drives exhibit slower writes speeds in the smaller capacity varieties. Small file 4k peak and average read/write speeds measured at 27/87 and 21/52 MB/s which is only 13% below the average of the nine user voted group leaders. Considering its age the M4 is a very impressive drive but there is far better value for money available in today's market[Feb '14 SSDrivePro]

Above average average bench

The Crucial M4 128GB averaged 39.6% 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 74.4MB/s
Avg. 4K Random Read Speed 24.2MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Crucial M4 128GB is 27.5%. This is a relatively narrow range which indicates that the Crucial M4 128GB performs reasonably consistently under varying real world conditions.


Avg. Sustained Write Speed 153MB/s
Avg. Sequential Write Speed 182MB/s

Average Bench

(Based on 30,265 samples)
Min Avg Max
339 Read 432 477
148 Write 182 196
188 Mixed 219 236
80.9 SusWrite 153 195
54.5% 247 MB/s
Min Avg Max
17.5 4K Read 24.2 28.6
37.1 4K Write 74.4 104
11.4 4K Mixed 15.2 18.5
95.5% 37.9 MB/s
Min Avg Max
28 DQ Read 151 297
94.6 DQ Write 122 175
18 DQ Mixed 35.4 58.4
54% 103 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
89GB free
Firmware: 070H
SusWrite @10s intervals: 182 192 183 196 195 196 MB/s
Read 474
Write 194
Mixed 226
SusWrite 191
60% 271 MB/s
4K Read 28.2
4K Write 107
4K Mixed 16.4
120% 50.6 MB/s
DQ Read 286
DQ Write 172
DQ Mixed 29.8
76% 162 MB/s
65GB free (System drive)
Firmware: 000F
SusWrite @10s intervals: 176 182 192 184 183 182 MB/s
Read 440
Write 182
Mixed 227
SusWrite 183
57% 258 MB/s
4K Read 25.9
4K Write 105
4K Mixed 14.9
114% 48.7 MB/s
DQ Read 140
DQ Write 122
DQ Mixed 29.9
50% 97.4 MB/s
88GB free (System drive)
Firmware: 010G
SusWrite @10s intervals: 154 161 192 177 185 187 MB/s
Read 395
Write 162
Mixed 200
SusWrite 176
52% 233 MB/s
4K Read 19.4
4K Write 42.7
4K Mixed 13.1
69% 25.1 MB/s
DQ Read 131
DQ Write 113
DQ Mixed 29.4
47% 91.1 MB/s
47GB free
Firmware: 070H
SusWrite @10s intervals: 110 126 142 155 154 154 MB/s
Read 368
Write 186
Mixed 190
SusWrite 140
49% 221 MB/s
4K Read 21.2
4K Write 58
4K Mixed 13.4
80% 30.9 MB/s
DQ Read 25
DQ Write 76.5
DQ Mixed 14.4
22% 38.6 MB/s
30,265 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 44,075,775 SSDs tested.

Typical M4 128GB Builds (Compare 7,442 builds) See popular component choices, score breakdowns and rankings.
Gaming 41%
Speed boat
Desktop 80%
Aircraft carrier
Workstation 32%
Sail boat

Motherboard: Asrock Z77 Extreme4 - $183

EDIT WITH CUSTOM PC BUILDER Value: 41% - Average Total price: $754

Popular M4 128GB 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) June 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

Consistently fast speeds. No exceptions and no fine print...

Added 7 years ago.

Poor (edit your comment) Add link

4 years ago.

Upgraded to the M4 on my 9yr. old HHD pc about 2.5 yrs. ago and the slow pc boots in 11 seconds. Newer SSDs are now available at better values. Bottom line, update your HHD to SSD and squeeze more life out of old pcs.


5 years ago.

I have this drive in my PC still going strong after 2 years but am thinking of getting Samsung.


3 years ago.

My one is great. Only con is the 5200-hour bug (you have to upgrade the firmware).

Very poor

7 years ago.

1057 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 i5-11400F $220Nvidia RTX 3070 $500Crucial MX500 250GB $40
Intel Core i5-11600K $259Nvidia RTX 3060-Ti $400Samsung 850 Evo 120GB $78
Intel Core i7-11700K $380Nvidia RTX 3080 $700Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $95SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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