Average Bench: 55.6% - 554th / 836

Based on 6,033 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]


Average average bench

The Crucial M4 128GB averaged 44.4% 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 65.7MB/s
Avg. 4K Random Read Speed 22.7MB/s
See where your SSD ranks →

Good consistency

The range of scores (95th - 5th percentile) for the Crucial M4 128GB is 22.7%. This is a relatively narrow range which indicates that the Crucial M4 128GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 7.06MB/s
Avg. 4K Random Mixed IO Speed 5.61MB/s

Average Bench

(Based on 6,033 samples)
Min Avg Max
348 Read 460 499
168 Write 187 194
192 Mixed 258 280
66.1% 302 MB/s
Min Avg Max
16.9 4K Read 22.7 29
30.3 4K Write 65.7 107
3.86 4K Mixed 5.61 8.4
76.3% 31.3 MB/s
Min Avg Max
20.9 DQ Read 102 267
49.2 DQ Write 104 162
4.32 DQ Mixed 7.06 13.7
31.8% 71.1 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
44GB free
Firmware: 000F Max speed: SATA 3.0 600 MB/s
Read 479
Write 191
Mixed 273
69% 315 MB/s
4K Read 24.5
4K Write 68.7
4K Mixed 6.48
82% 33.2 MB/s
DQ Read 139
DQ Write 119
DQ Mixed 7.72
39% 88.4 MB/s
16GB free
Firmware: 040H Max speed: SATA 3.0 600 MB/s
Read 471
Write 184
Mixed 216
64% 291 MB/s
4K Read 23.4
4K Write 76.1
4K Mixed 5.69
83% 35.1 MB/s
DQ Read 84.2
DQ Write 108
DQ Mixed 6.73
30% 66.3 MB/s
31GB free
Firmware: 040H Max speed: SATA 3.0 600 MB/s
Read 469
Write 182
Mixed 267
67% 306 MB/s
4K Read 23.7
4K Write 69
4K Mixed 3.88
77% 32.2 MB/s
DQ Read 23.2
DQ Write 67.5
DQ Mixed 7.39
17% 32.7 MB/s
33GB free
Firmware: 000F Max speed: SATA 3.0 600 MB/s
Read 487
Write 191
Mixed 277
70% 318 MB/s
4K Read 19
4K Write 29.9
4K Mixed 5.49
52% 18.1 MB/s
DQ Read 140
DQ Write 61.2
DQ Mixed 7.5
30% 69.5 MB/s
76GB free
Firmware: 000F Max speed: SATA 3.0 600 MB/s
Read 382
Write 184
Mixed 192
55% 253 MB/s
4K Read 22.3
4K Write 49.4
4K Mixed 3.9
65% 25.2 MB/s
DQ Read 28
DQ Write 81.5
DQ Mixed 5.67
18% 38.4 MB/s

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,124,209 SSDs tested.

Typical M4 128GB Builds (Compare 4,760 builds) See popular component choices, score breakdowns and rankings.
Gaming 74%
Desktop 64%
Workstation 40%
Jet ski

Motherboard: Asrock Z77 Extreme4 - $147

EDIT WITH CUSTOM PC BUILDER Value: 72% - Very good Total price: $997

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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) February 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]


Controller: Marvell 88SS9174-BLD2. Flash Memory: Micron Synchronous 25nm MLC.

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

Added 2 years ago.

Good (edit your comment) Add link

2 months 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.

Very poor

2 years ago.


9 months ago.

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


13 months ago.



2 years ago.

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

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836 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

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