Average Bench: 59.2% (793rd of 1058)

Based on 34,457 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 40.7% 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 71.2MB/s
Avg. 4K Random Read Speed 23.8MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial M4 128GB is 32.8%. 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 147MB/s
Avg. Sequential Write Speed 183MB/s

Average Bench

(Based on 34,457 samples)
Min Avg Max
340 Read 429 479
148 Write 183 195
182 Mixed 218 235
64.9 SusWrite 147 194
54% 244 MB/s
Min Avg Max
15.6 4K Read 23.8 28.8
26.1 4K Write 71.2 105
10.6 4K Mixed 14.9 18.3
92.8% 36.6 MB/s
Min Avg Max
27.3 DQ Read 156 297
84.9 DQ Write 124 175
16 DQ Mixed 34.5 58.4
54.6% 105 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
119GB free
Firmware: 070H
SusWrite @10s intervals: 186 188 198 189 199 198 MB/s
Read 438
Write 188
Mixed 223
SusWrite 193
58% 261 MB/s
4K Read 26.1
4K Write 83
4K Mixed 13.1
100% 40.7 MB/s
DQ Read 286
DQ Write 172
DQ Mixed 29.4
76% 162 MB/s
31GB free
Firmware: 040H
SusWrite @10s intervals: 158 175 184 178 143 122 MB/s
Read 441
Write 177
Mixed 218
SusWrite 160
55% 249 MB/s
4K Read 25.1
4K Write 77.1
4K Mixed 15
98% 39.1 MB/s
DQ Read 130
DQ Write 112
DQ Mixed 28.7
47% 90.1 MB/s
24GB free (System drive)
Firmware: 040H
SusWrite @10s intervals: 180 109 98 140 85 83 MB/s
Read 436
Write 190
Mixed 226
SusWrite 116
53% 242 MB/s
4K Read 23.8
4K Write 88.3
4K Mixed 10.6
96% 40.9 MB/s
DQ Read 126
DQ Write 110
DQ Mixed 29.5
46% 88.5 MB/s
18GB free (System drive)
Firmware: 070H
SusWrite @10s intervals: 99 103 45 90 107 67 MB/s
Read 347
Write 179
Mixed 202
SusWrite 85
45% 203 MB/s
4K Read 20.8
4K Write 47.7
4K Mixed 13.4
74% 27.3 MB/s
DQ Read 27.3
DQ Write 107
DQ Mixed 16.1
27% 50 MB/s
34,457 MORE »

 Market Share (See Leaders)

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

Typical M4 128GB Builds (Compare 8,200 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.
  • - 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

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.


4 years ago.

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

Very poor

7 years 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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