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CrucialCT128M4SSD2
$116
CrucialCT512M4SSD2
▲ 52407 ▼
 $116 

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

VS
▲ 501 ▼

Controller: Marvell 88SS9174-BLD2. Flash Memory: Micron Synchronous 25nm MLC. Release date ≤ Q4 2013.

Effective Speed 
+12%
Real World Speed
Performance profile from 39,116 user samples
Benchmark your SSD here
34,516 User Benchmarks
Best Bench: 72% 34GB free
Worst Bench: 44% 119GB free
Poor: 44% Great: 72%
SPEED RANK: 811th / 1080
4,600 User Benchmarks
Best Bench: 81% 377GB free
Worst Bench: 48% 120GB free (System drive)
Poor: 48% Great: 81%
SPEED RANK: 726th / 1080
Effective Speed
Effective SSD Speed 		59.8 % 66.9 % Faster effective speed.
+12%
Average Score 
+20%
Read
Avg. Sequential Read Speed 		433 MB/s 451 MB/s +4%
Write
Avg. Sequential Write Speed 		183 MB/s 248 MB/s Much faster write speed.
+36%
4K Read
Avg. 4K Random Read Speed 		24.2 MB/s Faster random read.
+22% 		19.9 MB/s
4K Write
Avg. 4K Random Write Speed 		73.1 MB/s 73.5 MB/s +1%
Mixed
Avg. Sequential Mixed IO Speed 		220 MB/s 273 MB/s Faster mixed IO speed.
+24%
4K Mixed
Avg. 4K Random Mixed IO Speed 		14.9 MB/s 23.3 MB/s Much faster random mixed IO.
+56%
SusWrite
Avg. Sustained Write Speed 		147 MB/s 205 MB/s Much faster sustained write speed.
+39%
Peak Score 
+20%
Read
Peak Sequential Read Speed 		479 MB/s 501 MB/s +5%
Write
Peak Sequential Write Speed 		195 MB/s 279 MB/s Much faster peak write speed.
+43%
4K Read
Peak 4K Random Read Speed 		28.5 MB/s Faster peak random read.
+21% 		23.5 MB/s
4K Write
Peak 4K Random Write Speed 		102 MB/s 104 MB/s +2%
Mixed
Peak Sequential Mixed IO Speed 		236 MB/s 300 MB/s Faster peak mixed IO speed.
+27%
4K Mixed
Peak 4K Random Mixed IO Speed 		18.5 MB/s 27.7 MB/s Much faster peak random mixed IO.
+50%
SusWrite
Peak Sequential Sustained Write 60s Average 		195 MB/s 265 MB/s Much faster peak sustained write speed.
+36%
Value & Sentiment 
+∞%
Market Share
Based on 77,534,422 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		4.19 % 18.5 % Hugely better value.
+342%
User Rating
UBM User Rating 		52 % +4% 50 %
Price
Price (score) 		$116 $74 Much cheaper.
+36%
Nice To Haves 
+5%
Age
Newest 		163 Months 131+ Months More recent.
+20%
DQ Read
Peak 4K-64Thread Read Speed 		296 MB/s Much faster peak deep queue read.
+51% 		196 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		175 MB/s 236 MB/s Much faster peak deep queue write.
+35%
AS-SSD Total
AS-SSD Total Score 		855 Pts Stronger server IO.
+11% 		773 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		58.4 MB/s Slightly faster peak deep queue mixed IO.
+6% 		55.1 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		157 MB/s Slightly faster deep queue read.
+10% 		143 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		123 MB/s 146 MB/s Faster deep queue write.
+19%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		34 MB/s 49.3 MB/s Much faster deep queue mixed IO.
+45%
Specifications 
Capacity
Capacity 		128GB 512GB
Conclusion 
Average Bench 59.8%
Average Bench 66.9%

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]

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Solid State Drive Rankings (Price vs Performance) November 2024 SSD Rankings

Welcome to our 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.
How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our 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 value for money upgrades.

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How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
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  • - Reports are generated and presented on userbenchmark.com
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  • - See speed test results from other users
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 Frequently Asked Questions

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
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How is the AS SSD total score calculated?
ALL FAQs »

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Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
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Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
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We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
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The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
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Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-12600K $159Nvidia RTX 4060 $280WD Black SN850X M.2 2TB $135
Intel Core i5-13600K $210Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $84
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $370
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