Average Bench: 492% (8th of 1080)

Based on 37,629 user benchmarks.  Models: WD_BLACK SN850X 2000GB, WD_BLACK SN850X HS 2000GB

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 2TB averaged 391.7% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WD Black SN850X M.2 2TB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 1,570MB/s
Avg. Sequential Write Speed 3,872MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WD Black SN850X M.2 2TB is 372%. This is a particularly wide range which indicates that the WD Black SN850X M.2 2TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Write Speed 184MB/s
Avg. 4K Random Mixed IO Speed 82.8MB/s

Average Bench

(Based on 37,629 samples)
Min Avg Max
2,150 Read 3,802 4,680
1,941 Write 3,872 4,993
1,729 Mixed 2,917 3,538
1,249 SusWrite 2,856 4,587
756% 3,362 MB/s
Min Avg Max
47.6 4K Read 70.9 84.8
72 4K Write 184 310
54.2 4K Mixed 82.8 113
311% 113 MB/s
Min Avg Max
903 DQ Read 1,799 2,409
432 DQ Write 1,387 2,012
618 DQ Mixed 1,570 2,180
1,180% 1,585 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
686GB free (System drive)
Firmware: 620331WD
SusWrite @10s intervals: 4292 4499 3373 1795 1713 1548 MB/s
Read 4,183
Write 4,304
Mixed 3,164
SusWrite 2,870
816% 3,630 MB/s
4K Read 72.5
4K Write 243
4K Mixed 96.5
362% 137 MB/s
DQ Read 2,029
DQ Write 1,623
DQ Mixed 1,778
1,344% 1,810 MB/s
968GB free (System drive)
Firmware: 620361WD
SusWrite @10s intervals: 4232 2575 1775 1904 2064 2013 MB/s
Read 3,733
Write 4,192
Mixed 3,033
SusWrite 2,427
753% 3,347 MB/s
4K Read 55.3
4K Write 223
4K Mixed 92.4
320% 123 MB/s
DQ Read 1,795
DQ Write 1,340
DQ Mixed 1,573
1,174% 1,569 MB/s
1.5TB free (System drive)
Firmware: 620361WD
SusWrite @10s intervals: 4411 4484 4607 4688 4544 4417 MB/s
Read 3,429
Write 1,296
Mixed 1,639
SusWrite 4,525
610% 2,722 MB/s
4K Read 1.1
4K Write 25.9
4K Mixed 1.2
17% 9.4 MB/s
DQ Read 31.8
DQ Write 273
DQ Mixed 1,617
815% 641 MB/s
923GB free
Firmware: 620361WD
SusWrite @10s intervals: 1904 1873 1740 2057 1619 1394 MB/s
Read 2,545
Write 2,296
Mixed 2,195
SusWrite 1,764
495% 2,200 MB/s
4K Read 55.5
4K Write 98.6
4K Mixed 64.1
218% 72.7 MB/s
DQ Read 1,359
DQ Write 1,067
DQ Mixed 1,214
908% 1,213 MB/s
470GB free (System drive)
Firmware: 620331WD
SusWrite @10s intervals: 2290 897 915 905 906 877 MB/s
Read 2,638
Write 2,534
Mixed 2,316
SusWrite 1,132
484% 2,155 MB/s
4K Read 60.3
4K Write 114
4K Mixed 71
243% 81.9 MB/s
DQ Read 983
DQ Write 682
DQ Mixed 815
613% 826 MB/s
37,629 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 77,601,853 SSDs tested

 Prices

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MSRP ≈ $290 @ launch in Aug '22
AmazonUS $13015 mins
EbayUS $13521 mins
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Typical Black SN850X M.2 2TB Builds (Compare 10,655 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 291%
UFO
Desktop
Desktop 123%
UFO
Workstation
Workstation 346%
UFO

Motherboard: Gigabyte Z790 AORUS ELITE AX - $200

EDIT WITH CUSTOM PC BUILDER Value: 118% - Outstanding Total price: $1,470

Popular Black SN850X M.2 2TB compatible motherboards:

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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.
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.

 Comments

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The Best
CPUGPUSSD
Intel Core i5-13600K $210Nvidia RTX 4060 $299WD Black SN850X M.2 2TB $130
Intel Core i5-12600K $160Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $378
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