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WDWDS400T2X0E
Seagate

Release date: Q3 2022.

  

Release date ≈ Q3 2023.

Real World Speed
Performance profile from 8,850 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
78 User Benchmarks
Best Bench: 653% 869GB free (System drive)
Worst Bench: 250% 861GB free (System drive)
Poor: 250% Great: 653%
SPEED RANK: 7th / 1080
Effective Speed
Effective SSD Speed
522 % +3% 507 %
Read
Avg. Sequential Read Speed
3793 MB/s 5270 MB/s Much faster read speed.
+39%
Write
Avg. Sequential Write Speed
3816 MB/s 5375 MB/s Much faster write speed.
+41%
4K Read
Avg. 4K Random Read Speed
67.2 MB/s +2% 65.8 MB/s
4K Write
Avg. 4K Random Write Speed
189 MB/s Slightly faster random write.
+7%
176 MB/s
Mixed
Avg. Sequential Mixed IO Speed
2970 MB/s Faster mixed IO speed.
+12%
2657 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
83.5 MB/s 93.7 MB/s Faster random mixed IO.
+12%
SusWrite
Avg. Sustained Write Speed
3370 MB/s Much faster sustained write speed.
+49%
2265 MB/s
Read
Peak Sequential Read Speed
4696 MB/s 6712 MB/s Much faster peak read speed.
+43%
Write
Peak Sequential Write Speed
4940 MB/s 7748 MB/s Much faster peak write speed.
+57%
4K Read
Peak 4K Random Read Speed
84.7 MB/s 89.2 MB/s Slightly faster peak random read.
+5%
4K Write
Peak 4K Random Write Speed
315 MB/s 315 MB/s
Mixed
Peak Sequential Mixed IO Speed
3586 MB/s Slightly faster peak mixed IO speed.
+10%
3263 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
113 MB/s 136 MB/s Faster peak random mixed IO.
+20%
SusWrite
Peak Sequential Sustained Write 60s Average
4656 MB/s Much faster peak sustained write speed.
+53%
3039 MB/s
Market Share
Based on 77,427,961 SSDs tested
Market Share
Market Share (trailing 30 days)
0.26 % Insanely higher market share.
+∞%
0 %
User Rating
UBM User Rating
72 % Much more popular.
+44%
50 %
Age
Newest
27 Months 15+ Months Much more recent.
+44%
DQ Read
Peak 4K-64Thread Read Speed
2486 MB/s Faster peak deep queue read.
+14%
2180 MB/s
DQ Write
Peak 4K-64Thread Write Speed
2073 MB/s Faster peak deep queue write.
+21%
1708 MB/s
AS-SSD Total
AS-SSD Total Score
7497 Pts +3% 7,305 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
2284 MB/s Faster peak deep queue mixed IO.
+17%
1953 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
1787 MB/s Slightly faster deep queue read.
+9%
1646 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
1382 MB/s Faster deep queue write.
+30%
1064 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
1548 MB/s Faster deep queue mixed IO.
+10%
1401 MB/s
Capacity
Capacity
4TB 1TB

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) 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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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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