Average Bench: 443% (12th of 1080)

Based on 37,972 user benchmarks.  Models: WD_BLACK SN850X 1000GB, WD_BLACK SN850X HS 1000GB

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]

Outstanding average bench

The WD Black SN850X M.2 1TB averaged 342.6% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WD Black SN850X M.2 1TB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 1,519MB/s
Avg. Sequential Write Speed 3,769MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WD Black SN850X M.2 1TB is 358%. This is a particularly wide range which indicates that the WD Black SN850X M.2 1TB performs inconsistently under varying real world conditions.


Avg. 4K Random Write Speed 184MB/s
Avg. 4K Random Read Speed 68.6MB/s

Average Bench

(Based on 37,972 samples)
Min Avg Max
2,030 Read 3,711 4,629
1,853 Write 3,769 4,976
1,755 Mixed 2,835 3,409
1,042 SusWrite 2,152 4,096
700% 3,117 MB/s
Min Avg Max
46.6 4K Read 68.6 85.4
73.4 4K Write 184 314
49.7 4K Mixed 82.8 113
308% 112 MB/s
Min Avg Max
849 DQ Read 1,741 2,433
261 DQ Write 1,362 2,047
464 DQ Mixed 1,519 2,253
1,146% 1,541 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
731GB free (System drive)
Firmware: 620361WD
SusWrite @10s intervals: 4412 2987 2260 1412 1288 1297 MB/s
Read 4,434
Write 4750
Mixed 3,307
SusWrite 2,276
829% 3,692 MB/s
4K Read 85
4K Write 273
4K Mixed 108
412% 155 MB/s
DQ Read 2,452
DQ Write 1,884
DQ Mixed 2,248
1,660% 2,195 MB/s
687GB free
Firmware: 620361WD
SusWrite @10s intervals: 4393 2309 872 892 918 923 MB/s
Read 3,847
Write 4,355
Mixed 3,209
SusWrite 1,718
738% 3,282 MB/s
4K Read 75.7
4K Write 282
4K Mixed 102
394% 153 MB/s
DQ Read 2,518
DQ Write 2,136
DQ Mixed 2,374
1,766% 2,342 MB/s
283GB free
Firmware: 620361WD
SusWrite @10s intervals: 4257 3554 1309 909 724 696 MB/s
Read 3,803
Write 4,158
Mixed 2,999
SusWrite 1908
723% 3,217 MB/s
4K Read 57.3
4K Write 285
4K Mixed 99.3
365% 147 MB/s
DQ Read 2,286
DQ Write 1,858
DQ Mixed 1,987
1,511% 2,044 MB/s
395GB free (System drive)
Firmware: 620361WD
SusWrite @10s intervals: 3904 1697 931 1002 991 834 MB/s
Read 4,383
Write 4,470
Mixed 3272
SusWrite 1,560
766% 3,421 MB/s
4K Read 74.6
4K Write 218
4K Mixed 96
352% 130 MB/s
DQ Read 1,472
DQ Write 1,072
DQ Mixed 1,199
916% 1,247 MB/s
729GB free (System drive)
Firmware: 620281WD
SusWrite @10s intervals: 2996 2409 2161 2217 2115 1582 MB/s
Read 3,790
Write 3,820
Mixed 2962
SusWrite 2,246
720% 3,205 MB/s
4K Read 60.7
4K Write 115
4K Mixed 70.5
243% 82.2 MB/s
DQ Read 1,580
DQ Write 1,263
DQ Mixed 1381
1,045% 1,408 MB/s
37,972 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 76,492,156 SSDs tested


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MSRP ≈ $160 @ launch in Aug '22
AmazonUS $9222 mins
EbayUS $973 mins
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Typical Black SN850X M.2 1TB Builds (Compare 9,685 builds) See popular component choices, score breakdowns and rankings
Gaming 291%
Desktop 123%
Workstation 346%

Motherboard: Gigabyte Z790 AORUS ELITE AX - $200

EDIT WITH CUSTOM PC BUILDER Value: 110% - Outstanding Total price: $1,418

Popular Black SN850X M.2 1TB compatible motherboards:

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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]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.


The Ultimate X Factor...

Added 1 month ago.

Excellent (edit your comment) Add link

7 days ago.

Man, $77 on sale via Amazon is a steal for 1TB! Would recommend.


1 month ago.


9 months ago.

easily one of the fastest drives I have ever had


13 months ago.

Good SSD


1 month ago.

I like it, picasso


19 months ago.

This thing is blazing fast!! I did not expect to see an FPS increase in game but wow, was I ever wrong. No stuttering or screen tearing at all when whipping the camera around, unreal. Unfortunately, userbenchmark keeps detecting my NVME as ram, and will not benchmark correctly :(

1080 Drives (Compared) Thousands of user benchmarks compiled into one comparison list

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

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The Best
Intel Core i5-12600K $175Nvidia RTX 4060 $293WD Black SN850X M.2 2TB $140
Intel Core i5-13600K $240Nvidia RTX 4070 $499WD Black SN850X M.2 1TB $92
Intel Core i5-12400F $110Nvidia RTX 4060-Ti $390Crucial T700 M.2 4TB $342
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