CrucialCT256M4SSD2
$218
CrucialCT128M4SSD2
$116
 $218 

Controller: Marvell 88SS9174-BLD2. Flash Memory: Micron Synchronous 25nm MLC. Release date: Q2 2011.

 $116 

Controller: Marvell 88SS9174-BLD2. Flash Memory: Micron Synchronous 25nm MLC. Release date: Q2 2011.

Real World Speed
Performance profile from 48,935 user samples
15,985 User Benchmarks
Best Bench: 73% 100GB free
Worst Bench: 44% 11GB free (System drive)
Poor: 44% Great: 73%
SPEED RANK: 781st / 1058
32,950 User Benchmarks
Best Bench: 73% 348GB free
Worst Bench: 42% 24GB free (System drive)
Poor: 42% Great: 73%
SPEED RANK: 789th / 1058
Effective Speed
Effective SSD Speed
60.4 % +2% 59.4 %
Read
Avg. Sequential Read Speed
430 MB/s +0% 429 MB/s
Write
Avg. Sequential Write Speed
239 MB/s Much faster write speed.
+31%
182 MB/s
4K Read
Avg. 4K Random Read Speed
20 MB/s 23.8 MB/s Faster random read.
+19%
4K Write
Avg. 4K Random Write Speed
71.1 MB/s 71.9 MB/s +1%
Mixed
Avg. Sequential Mixed IO Speed
250 MB/s Faster mixed IO speed.
+15%
218 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
14.4 MB/s 14.8 MB/s +3%
SusWrite
Avg. Sustained Write Speed
198 MB/s Much faster sustained write speed.
+34%
148 MB/s
Read
Peak Sequential Read Speed
490 MB/s +3% 478 MB/s
Write
Peak Sequential Write Speed
266 MB/s Much faster peak write speed.
+36%
195 MB/s
4K Read
Peak 4K Random Read Speed
23.3 MB/s 28.7 MB/s Faster peak random read.
+23%
4K Write
Peak 4K Random Write Speed
101 MB/s 104 MB/s +3%
Mixed
Peak Sequential Mixed IO Speed
271 MB/s Faster peak mixed IO speed.
+15%
235 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
18.8 MB/s +3% 18.2 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
266 MB/s Much faster peak sustained write speed.
+37%
194 MB/s
Market Share
Based on 45,316,882 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.02 % 0.05 % Hugely higher market share.
+150%
Value
Value For Money
4.43 % Slightly better value.
+7%
4.15 %
User Rating
UBM User Rating
52 % 52 %
Price
Price (score)
$218 $116 Much cheaper.
+47%
Age
Newest
123 Months 123 Months
DQ Read
Peak 4K-64Thread Read Speed
184 MB/s 297 MB/s Much faster peak deep queue read.
+61%
DQ Write
Peak 4K-64Thread Write Speed
233 MB/s Much faster peak deep queue write.
+33%
175 MB/s
AS-SSD Total
AS-SSD Total Score
746 Pts 859 Pts Stronger server IO.
+15%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
33 MB/s 58.4 MB/s Much faster peak deep queue mixed IO.
+77%
ADQ Read
Avg. 4K-64Thread Read Speed
133 MB/s 157 MB/s Faster deep queue read.
+18%
ADQ Write
Avg. 4K-64Thread Write Speed
136 MB/s Slightly faster deep queue write.
+10%
124 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
23.8 MB/s 34.8 MB/s Much faster deep queue mixed IO.
+46%
Capacity
Capacity
256GB 128GB
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The Crucial M4 is one of the oldest SSD's to have made it into the group test. When it was released its primary competitors were Sandforce based drives which suffered from two major problems: reliability and weak incompressible data performance. As a result this drive was one of the top drives of its time. That was back in Apr '11. Today the M4 is no longer able to compete and scores below average (377.9 MB/s) on the Real World Speed Index benchmark and way below average (676) on the deep queue depth orientated AS-SSD Total score benchmark. Of course these figures are still far faster than any mechanical hard drive and owners of this drive should feel in no hurry to upgrade. People looking to make a new purchase will find much better value elsewhere. [Apr '13 SSDrivePro]

MORE DETAILS

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]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) July 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]

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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.
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.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
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Intel Core i5-11600K $270Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-10700K $304Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $78
HDDRAMUSB
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WD Blue 1TB (2012) $29Corsair Vengeance LPX DDR4 3000 C15 2x8GB $85SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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