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WDWDS400T2X0E
▲ 504 ▼
  

Release date ≈ Q2 2022.

VS
▲ 72554 ▼

Release date: Q3 2022.

Effective Speed 
+7%
Real World Speed
Performance profile from 16,907 user samples
Benchmark your SSD here
8,135 User Benchmarks
Best Bench: 641% 355GB free
Worst Bench: 301% 999GB free (System drive)
Poor: 301% Great: 641%
SPEED RANK: 8th / 1080
8,772 User Benchmarks
Great bench: 683% 3.5TB free
Poor bench: 288% 2.5TB free (System drive)
Poor: 288% Great: 683%
SPEED RANK: 7th / 1080
Effective Speed
Effective SSD Speed 		489 % 522 % Slightly faster effective speed.
+7%
Average Score 
+5%
Read
Avg. Sequential Read Speed 		4226 MB/s Faster read speed.
+11% 		3793 MB/s
Write
Avg. Sequential Write Speed 		3299 MB/s 3816 MB/s Faster write speed.
+16%
4K Read
Avg. 4K Random Read Speed 		71.7 MB/s Slightly faster random read.
+7% 		67.2 MB/s
4K Write
Avg. 4K Random Write Speed 		190 MB/s +1% 189 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		2523 MB/s 2970 MB/s Faster mixed IO speed.
+18%
4K Mixed
Avg. 4K Random Mixed IO Speed 		92.1 MB/s Faster random mixed IO.
+10% 		83.5 MB/s
SusWrite
Avg. Sustained Write Speed 		2635 MB/s 3370 MB/s Faster sustained write speed.
+28%
Peak Score 
+3%
Read
Peak Sequential Read Speed 		5127 MB/s Slightly faster peak read speed.
+9% 		4696 MB/s
Write
Peak Sequential Write Speed 		4195 MB/s 4940 MB/s Faster peak write speed.
+18%
4K Read
Peak 4K Random Read Speed 		84.3 MB/s 84.7 MB/s +0%
4K Write
Peak 4K Random Write Speed 		328 MB/s +4% 315 MB/s
Mixed
Peak Sequential Mixed IO Speed 		3151 MB/s 3586 MB/s Faster peak mixed IO speed.
+14%
4K Mixed
Peak 4K Random Mixed IO Speed 		132 MB/s Faster peak random mixed IO.
+17% 		113 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		3850 MB/s 4656 MB/s Faster peak sustained write speed.
+21%
Value & Sentiment 
+55%
Market Share
Based on 77,407,843 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.15 % 0.25 % Much higher market share.
+67%
User Rating
UBM User Rating 		50 % 72 % Much more popular.
+44%
Nice To Haves 
+16%
Age
Newest 		29+ Months 27 Months Slightly more recent.
+7%
DQ Read
Peak 4K-64Thread Read Speed 		2211 MB/s 2486 MB/s Faster peak deep queue read.
+12%
DQ Write
Peak 4K-64Thread Write Speed 		1737 MB/s 2073 MB/s Faster peak deep queue write.
+19%
AS-SSD Total
AS-SSD Total Score 		6,692 Pts 7497 Pts Stronger server IO.
+12%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		1949 MB/s 2284 MB/s Faster peak deep queue mixed IO.
+17%
ADQ Read
Avg. 4K-64Thread Read Speed 		1577 MB/s 1787 MB/s Faster deep queue read.
+13%
ADQ Write
Avg. 4K-64Thread Write Speed 		1063 MB/s 1382 MB/s Much faster deep queue write.
+30%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		1364 MB/s 1548 MB/s Faster deep queue mixed IO.
+13%
Specifications 
Capacity
Capacity 		2TB 4TB
Conclusion 
Average Bench 489%
Average Bench 522%

Crystal disk gave me 7300 read and 6500 write on peak performance test [May '24 Limpiabota]

MORE DETAILS

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

User Builds 
8,135
8,772
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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
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  • - 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
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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?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 Best User Rated
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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 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 $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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