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WDWDS100T2X0E
CrucialCT128M4SSD2
$116
▲ 751,649 ▼

Release date: Q3 2022.

VS
▲ 52407 ▼
 $116 

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

Effective Speed 
+640%
Real World Speed
Performance profile from 72,488 user samples
Benchmark your SSD here
37,972 User Benchmarks
Great bench: 615% 733GB free (System drive)
Poor bench: 256% 183GB free
Poor: 256% Great: 615%
SPEED RANK: 12th / 1080
34,516 User Benchmarks
Best Bench: 72% 34GB free
Worst Bench: 44% 119GB free
Poor: 44% Great: 72%
SPEED RANK: 811th / 1080
Effective Speed
Effective SSD Speed 		443 % Hugely faster effective speed.
+640% 		59.8 %
Average Score 
+866%
Read
Avg. Sequential Read Speed 		3,711 MB/s Hugely faster read speed.
+757% 		433 MB/s
Write
Avg. Sequential Write Speed 		3,769 MB/s Insanely faster write speed.
+1,960% 		183 MB/s
4K Read
Avg. 4K Random Read Speed 		68.6 MB/s Hugely faster random read.
+183% 		24.2 MB/s
4K Write
Avg. 4K Random Write Speed 		184 MB/s Hugely faster random write.
+152% 		73.1 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		2,835 MB/s Insanely faster mixed IO speed.
+1,189% 		220 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		82.8 MB/s Hugely faster random mixed IO.
+456% 		14.9 MB/s
SusWrite
Avg. Sustained Write Speed 		2,152 MB/s Insanely faster sustained write speed.
+1,364% 		147 MB/s
Peak Score 
+1,083%
Read
Peak Sequential Read Speed 		4,629 MB/s Hugely faster peak read speed.
+866% 		479 MB/s
Write
Peak Sequential Write Speed 		4,976 MB/s Insanely faster peak write speed.
+2,452% 		195 MB/s
4K Read
Peak 4K Random Read Speed 		85.4 MB/s Hugely faster peak random read.
+200% 		28.5 MB/s
4K Write
Peak 4K Random Write Speed 		314 MB/s Hugely faster peak random write.
+208% 		102 MB/s
Mixed
Peak Sequential Mixed IO Speed 		3,409 MB/s Insanely faster peak mixed IO speed.
+1,344% 		236 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		113 MB/s Hugely faster peak random mixed IO.
+511% 		18.5 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		4,096 MB/s Insanely faster peak sustained write speed.
+2,001% 		195 MB/s
Value & Sentiment 
+1,785%
Market Share
Based on 77,606,327 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.54 % Insanely higher market share.
+2,600% 		0.02 %
Value
Value For Money 		191 % Insanely better value.
+4,465% 		4.19 %
User Rating
UBM User Rating 		75 % Much more popular.
+44% 		52 %
Price
Price (score) 		$80 Much cheaper.
+31% 		$116
Nice To Haves 
+1,598%
Age
Newest 		27 Months Hugely more recent.
+83% 		163 Months
DQ Read
Peak 4K-64Thread Read Speed 		2,433 MB/s Hugely faster peak deep queue read.
+722% 		296 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		2,047 MB/s Insanely faster peak deep queue write.
+1,070% 		175 MB/s
AS-SSD Total
AS-SSD Total Score 		7,391 Pts Hugely stronger server IO.
+764% 		855 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		2,253 MB/s Insanely faster peak deep queue mixed IO.
+3,758% 		58.4 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		1,741 MB/s Insanely faster deep queue read.
+1,009% 		157 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		1,362 MB/s Insanely faster deep queue write.
+1,007% 		123 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		1,519 MB/s Insanely faster deep queue mixed IO.
+4,368% 		34 MB/s
Specifications 
Capacity
Capacity 		1TB 128GB
Conclusion 
Average Bench 443%
Average Bench 59.8%

The WD Black SN850X has a superb consumer performance profile. As well as offering solid burst speeds of 5 GB/s, the SN850X also offers respectable out of cache performance. At current prices (1TB $90 USD, 2TB $145 USD and 4TB $290 USD) the WD Black SN850X is our top value pick at every capacity. [Jun '24 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

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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.
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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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 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?
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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?
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ALL FAQs »

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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 Best
CPUGPUSSD
Intel Core i5-13600K $210Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $125
Intel Core i5-12600K $160Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $330
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