WDWDS400T2X0E
Nvme

Release date: Q3 2022.

  

Release date ≈ Q3 2022.

Real World Speed
Performance profile from 9,425 user samples
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
653 User Benchmarks
Great bench: 552% 830GB free (System drive)
Poor bench: 166% 895GB free (System drive)
Poor: 166% Great: 552%
SPEED RANK: 22nd / 1080
Effective Speed
Effective SSD Speed
522 % Much faster effective speed.
+39%
376 %
Read
Avg. Sequential Read Speed
3793 MB/s Faster read speed.
+25%
3037 MB/s
Write
Avg. Sequential Write Speed
3816 MB/s Much faster write speed.
+38%
2756 MB/s
4K Read
Avg. 4K Random Read Speed
67.2 MB/s Faster random read.
+12%
59.9 MB/s
4K Write
Avg. 4K Random Write Speed
189 MB/s Faster random write.
+29%
147 MB/s
Mixed
Avg. Sequential Mixed IO Speed
2970 MB/s Much faster mixed IO speed.
+48%
2012 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
83.5 MB/s Faster random mixed IO.
+24%
67.2 MB/s
SusWrite
Avg. Sustained Write Speed
3370 MB/s Much faster sustained write speed.
+52%
2212 MB/s
Read
Peak Sequential Read Speed
4696 MB/s Faster peak read speed.
+14%
4135 MB/s
Write
Peak Sequential Write Speed
4940 MB/s Faster peak write speed.
+20%
4129 MB/s
4K Read
Peak 4K Random Read Speed
84.7 MB/s Faster peak random read.
+12%
75.9 MB/s
4K Write
Peak 4K Random Write Speed
315 MB/s Faster peak random write.
+24%
254 MB/s
Mixed
Peak Sequential Mixed IO Speed
3586 MB/s Much faster peak mixed IO speed.
+34%
2671 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
113 MB/s Faster peak random mixed IO.
+16%
97.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
4656 MB/s Faster peak sustained write speed.
+23%
3794 MB/s
Market Share
Based on 76,391,181 SSDs tested
Market Share
Market Share (trailing 30 days)
0.23 % Hugely higher market share.
+667%
0.03 %
User Rating
UBM User Rating
72 % Much more popular.
+44%
50 %
Age
Newest
23 Months +4% 24+ Months
DQ Read
Peak 4K-64Thread Read Speed
2486 MB/s Faster peak deep queue read.
+25%
1986 MB/s
DQ Write
Peak 4K-64Thread Write Speed
2073 MB/s Much faster peak deep queue write.
+43%
1448 MB/s
AS-SSD Total
AS-SSD Total Score
7497 Pts Stronger server IO.
+28%
5,866 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
2284 MB/s Much faster peak deep queue mixed IO.
+35%
1691 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
1787 MB/s Much faster deep queue read.
+59%
1127 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
1382 MB/s Hugely faster deep queue write.
+81%
765 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
1548 MB/s Much faster deep queue mixed IO.
+62%
958 MB/s
Capacity
Capacity
4TB 1TB
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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

Solid State Drive Rankings (Price vs Performance) July 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]

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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.
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The Best
CPUGPUSSD
Intel Core i5-12600K $165Nvidia RTX 4060 $293WD Black SN850X M.2 2TB $119
Intel Core i5-13600K $248Nvidia RTX 4060-Ti $388WD Black SN850X M.2 1TB $90
Intel Core i5-12400F $110Nvidia RTX 4070 $520Crucial T700 M.2 4TB $423
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