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WDWDS200T2X0E
CrucialCT256M4SSD2
$218
▲ 75726 ▼

Release date: Q3 2022.

VS
▲ 521,868 ▼
 $218 

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

Effective Speed 
+709%
Real World Speed
Performance profile from 55,567 user samples
Benchmark your SSD here
37,629 User Benchmarks
Great bench: 666% 1.5TB free (System drive)
Poor bench: 293% 1.5TB free (System drive)
Poor: 293% Great: 666%
SPEED RANK: 8th / 1080
17,938 User Benchmarks
Best Bench: 74% 168GB free
Worst Bench: 43% 72GB free (System drive)
Poor: 43% Great: 74%
SPEED RANK: 804th / 1080
Effective Speed
Effective SSD Speed 		492 % Hugely faster effective speed.
+709% 		60.8 %
Average Score 
+800%
Read
Avg. Sequential Read Speed 		3802 MB/s Hugely faster read speed.
+780% 		432 MB/s
Write
Avg. Sequential Write Speed 		3872 MB/s Insanely faster write speed.
+1,513% 		240 MB/s
4K Read
Avg. 4K Random Read Speed 		70.9 MB/s Hugely faster random read.
+256% 		19.9 MB/s
4K Write
Avg. 4K Random Write Speed 		184 MB/s Hugely faster random write.
+148% 		74.1 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		2917 MB/s Insanely faster mixed IO speed.
+1,067% 		250 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		82.8 MB/s Hugely faster random mixed IO.
+467% 		14.6 MB/s
SusWrite
Avg. Sustained Write Speed 		2856 MB/s Insanely faster sustained write speed.
+1,365% 		195 MB/s
Peak Score 
+913%
Read
Peak Sequential Read Speed 		4680 MB/s Hugely faster peak read speed.
+847% 		494 MB/s
Write
Peak Sequential Write Speed 		4993 MB/s Insanely faster peak write speed.
+1,763% 		268 MB/s
4K Read
Peak 4K Random Read Speed 		84.8 MB/s Hugely faster peak random read.
+262% 		23.4 MB/s
4K Write
Peak 4K Random Write Speed 		310 MB/s Hugely faster peak random write.
+192% 		106 MB/s
Mixed
Peak Sequential Mixed IO Speed 		3538 MB/s Insanely faster peak mixed IO speed.
+1,196% 		273 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		113 MB/s Hugely faster peak random mixed IO.
+498% 		18.9 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		4587 MB/s Insanely faster peak sustained write speed.
+1,631% 		265 MB/s
Value & Sentiment 
+3,549%
Market Share
Based on 77,466,450 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.89 % Insanely higher market share.
+8,800% 		0.01 %
Value
Value For Money 		241 % Insanely better value.
+5,312% 		4.46 %
User Rating
UBM User Rating 		75 % Much more popular.
+44% 		52 %
Price
Price (score) 		$135 Much cheaper.
+38% 		$218
Nice To Haves 
+2,264%
Age
Newest 		27 Months Hugely more recent.
+83% 		163 Months
DQ Read
Peak 4K-64Thread Read Speed 		2409 MB/s Insanely faster peak deep queue read.
+1,209% 		184 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		2012 MB/s Hugely faster peak deep queue write.
+760% 		234 MB/s
AS-SSD Total
AS-SSD Total Score 		7,322 Pts Hugely stronger server IO.
+873% 		752 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		2180 MB/s Insanely faster peak deep queue mixed IO.
+6,486% 		33.1 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		1799 MB/s Insanely faster deep queue read.
+1,253% 		133 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		1387 MB/s Hugely faster deep queue write.
+920% 		136 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		1570 MB/s Insanely faster deep queue mixed IO.
+6,524% 		23.7 MB/s
Specifications 
Capacity
Capacity 		2TB 256GB
Conclusion 
Average Bench 492%
Average Bench 60.8%

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 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

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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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 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?
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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 i5-12600K $169Nvidia RTX 4060 $295WD Black SN850X M.2 2TB $135
Intel Core i5-12400F $111Nvidia RTX 4060-Ti $345WD Black SN850X M.2 1TB $80
Intel Core i5-13600K $225Nvidia RTX 4070 $500Crucial T700 M.2 4TB $350
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