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WD WDS100T2X0E

Black SN850X M.2 1TB

Average Bench: 411% (16th of 1087)

Based on 66,552 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]

Poor: 224%Average: 411% Great: 605%

Popular builds with this SSD

Outstanding average bench

The WD Black SN850X M.2 1TB averaged 311.2% 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.

Strengths

Avg. 4K-64Thread Mixed IO Speed 1,731MB/s
Avg. Sequential Write Speed 4,008MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WD Black SN850X M.2 1TB is 381%. This is a particularly wide range which indicates that the WD Black SN850X M.2 1TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Write Speed 204MB/s
Avg. 4K Random Mixed IO Speed 85.3MB/s

Average Bench

(Based on 66,552 samples)
Rank 16411%
Min Avg Max
2,075 Read 3,881 4,564
1,783 Write 4,008 4,966
1,544 Mixed 2,860 3,315
792 SusWrite 2,046 4,082
718% 3,199 MB/s
Min Avg Max
47.2 4K Read 74.6 83.4
82.3 4K Write 204 298
52 4K Mixed 85.3 108
330% 121 MB/s
Min Avg Max
987 DQ Read 1,873 2,635
747 DQ Write 1,589 2,317
864 DQ Mixed 1,731 2,492
1,297% 1,731 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
753GB free
Firmware: 620331WD
SusWrite @10s intervals: 4497 4378 4597 4829 1915 1366 MB/s
642% Outstanding
Read 4,402
Write 4,742
Mixed 3,129
SusWrite 3,597
893% 3,967 MB/s
4K Read 73.5
4K Write 289
4K Mixed 97.8
390% 153 MB/s
DQ Read 3,043
DQ Write 2,759
DQ Mixed 2,763
2,110% 2,855 MB/s
676GB free
Firmware: 620361WD
SusWrite @10s intervals: 4661 1937 872 946 963 862 MB/s
453% Outstanding
Read 4,309
Write 4,647
Mixed 3,225
SusWrite 1,707
779% 3,472 MB/s
4K Read 82.2
4K Write 245
4K Mixed 105
388% 144 MB/s
DQ Read 1,374
DQ Write 1,218
DQ Mixed 1,343
994% 1,312 MB/s
821GB free (System drive)
Firmware: 620361WD
374% Outstanding
Read 4,328
Write 5,046
Mixed 3,205
937% 4,193 MB/s
4K Read 67
4K Write 280
4K Mixed 92
367% 146 MB/s
DQ Read 2,200
DQ Write 1,835
DQ Mixed 1,982
1,494% 2,005 MB/s
94GB free (System drive)
Firmware: 620361WD
272% Outstanding
Read 3,659
Write 4,202
Mixed 3,020
811% 3,627 MB/s
4K Read 57.4
4K Write 127
4K Mixed 70.6
245% 85.1 MB/s
DQ Read 1,170
DQ Write 1,088
DQ Mixed 1,108
837% 1,122 MB/s
421GB free
Firmware: 620311WD
237% Outstanding
Read 2,413
Write 2,343
Mixed 2,065
508% 2,274 MB/s
4K Read 57.7
4K Write 126
4K Mixed 69.7
244% 84.6 MB/s
DQ Read 1,280
DQ Write 1,671
DQ Mixed 1,389
1,073% 1,446 MB/s
66,552 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 79,905,880 SSDs tested

 Prices

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MSRP ≈ $160 @ launch in Aug '22
EbayDE €1072 mins
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Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical Black SN850X M.2 1TB Builds (Compare 12,625 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 129%
UFO
Desktop
Desktop 123%
UFO
Workstation
Workstation 152%
UFO

Motherboard: Gigabyte Z790 AORUS ELITE AX - €215

CPU
Core i7-13700KIntel  €370Bench 126%, 38,490 samples2,970x
Core i9-13900KIntel  €530Bench 129%, 49,132 samples2,308x
Core i5-13600KIntel  €293Bench 122%, 27,559 samples1,274x
GPU
RTX 4070-TiNvidia  €896Bench 101%, 120,180 samples1,752x
RTX 4090Nvidia  €1,920Bench 155%, 121,235 samples1,638x
RTX 4080Nvidia  €1,024Bench 122%, 80,552 samples1,209x
SSD
Black SN850X M.2 1TBWD  €107Bench 411%, 66,552 samples1x
RAM
Vengeance DDR5 5600 C36 2x16GBCorsair  €111Bench 162%, 40,739 samples928x
TZ/RJ/FX DDR5 6400 C36 2x16GBG.SKILL  €97Bench 173%, 39,467 samples871x
TZ/RJ/FX DDR5 6400 C32 2x16GBG.SKILL  €137Bench 187%, 18,403 samples733x
EDIT WITH CUSTOM PC BUILDER Value: 68% - Good Total price: €1,699

Popular Black SN850X M.2 1TB compatible motherboards:

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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  • - 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
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Solid State Drive Rankings (Price vs Performance) June 2025 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.

 Comments

SSDrivePro
Avatar level
1,938

Official site www.westerndigital.com/...

The Ultimate X Factor...

Added 12 months ago.
DEU-User
Avatar level
6,017

Excellent (edit your comment) Add link

7 months ago.

SSDrivePro
Avatar level
1,938

Good

12 months ago.

maxscholes
Avatar level
28

Excellent

21 months ago.

easily one of the fastest drives I have ever had

mke1jrs
Avatar level
28

Excellent

4 months ago.

One-year-old SN850X-1TB boot drive just scored 638% today on an Asrock z790 Nova mobo. Wicked fast and to date, completely reliable. Temps can get well into the 40s C, but no issues with reliability so far--HWMonitor64 says 100% of life still remaining even after a year of near daily use. I believe that this is the ultimate M.2 boot drive for any serious gaming rig.

RuDeMaN
Avatar level
22

Excellent

2 years ago.

Good SSD

Piepneus113
Avatar level
8

Good

13 months ago.

I like it, picasso

Savio
Avatar level
2

Excellent

2 years 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 :(

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Speed Comparisons

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1087 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.

 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 »

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The Best
CPUGPUSSD
Intel Core i5-12600K €178Nvidia RTX 4060 €308WD Black SN850X M.2 2TB €153
Intel Core i5-14600K €212Nvidia RTX 4060-Ti €441WD Black SN850X M.2 1TB €107
Intel Core i5-12400F €108Nvidia RTX 4070 €568Crucial T700 M.2 4TB €432
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