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Nvme

WD_BLACK SN850X 4TB

▲ 500 ▼

Release date ≈ Q1 2023.

Average Bench: 550% (5th of 1080)

Based on 50 user benchmarks.  Model: NVMe WD_BLACK SN850X
Poor: 294%Average: 550% Great: 668%

Popular builds with this SSD

Outstanding average bench

The Nvme WD_BLACK SN850X 4TB averaged 450.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Nvme WD_BLACK SN850X 4TB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 1,642MB/s
Avg. Sequential Write Speed 3,917MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Nvme WD_BLACK SN850X 4TB is 374%. This is a particularly wide range which indicates that the Nvme WD_BLACK SN850X 4TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 67.5MB/s
Avg. 4K Random Mixed IO Speed 85.1MB/s

Average Bench

(Based on 50 samples)
Rank 5550%
Min Avg Max
1,933 Read 3,996 4,801
1,767 Write 3,917 5,108
1,232 Mixed 3,015 3,671
1,586 SusWrite 3,578 4,986
816% 3,626 MB/s
Min Avg Max
43 4K Read 67.5 85.3
64.9 4K Write 211 372
43.8 4K Mixed 85.1 115
323% 121 MB/s
Min Avg Max
640 DQ Read 1,837 2,661
510 DQ Write 1,483 2,320
575 DQ Mixed 1,642 2,515
1,234% 1,654 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
3.5TB free
Firmware: 6243 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 4887 4879 4885 4881 4873 4879 MB/s
725% Outstanding
Read 4,519
Write 4,852
Mixed 3,553
SusWrite 4,880
1,004% 4,451 MB/s
4K Read 78.6
4K Write 324
4K Mixed 107
428% 170 MB/s
DQ Read 2,861
DQ Write 2,400
DQ Mixed 2,600
1,956% 2,621 MB/s
3.5TB free (System drive)
Firmware: 61WD Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 4893 4876 4909 4884 4872 4873 MB/s
707% Outstanding
Read 4,685
Write 4,827
Mixed 3,308
SusWrite 4,884
998% 4,426 MB/s
4K Read 87.5
4K Write 313
4K Mixed 114
444% 172 MB/s
DQ Read 2,168
DQ Write 1,690
DQ Mixed 1,894
1,426% 1,917 MB/s
2.5TB free
Firmware: 624361WD Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 4135 4098 4119 4124 4095 4126 MB/s
616% Outstanding
Read 4,038
Write 4,220
Mixed 3,162
SusWrite 4,116
876% 3,884 MB/s
4K Read 68
4K Write 239
4K Mixed 87.5
342% 132 MB/s
DQ Read 2,472
DQ Write 2,016
DQ Mixed 2,254
1,685% 2,247 MB/s
2.5TB free
Firmware: 624361WD Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 4249 4262 4261 4254 4249 4272 MB/s
591% Outstanding
Read 3,966
Write 4,126
Mixed 3,136
SusWrite 4,258
873% 3,871 MB/s
4K Read 64.5
4K Write 230
4K Mixed 81.2
324% 125 MB/s
DQ Read 1,888
DQ Write 1,459
DQ Mixed 1,616
1,224% 1,654 MB/s
2.5TB free (System drive)
Firmware: 624311WD Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 3425 3449 3491 3656 3491 2296 MB/s
502% Outstanding
Read 3,828
Write 3,779
Mixed 3,000
SusWrite 3,302
783% 3,477 MB/s
4K Read 53.4
4K Write 120
4K Mixed 65.8
229% 79.8 MB/s
DQ Read 1,919
DQ Write 1,531
DQ Mixed 1,711
1,284% 1,720 MB/s
2.5TB free
Firmware: 624361WD Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 2959 2959 2955 2964 2953 2948 MB/s
452% Outstanding
Read 2,709
Write 2,953
Mixed 2,372
SusWrite 2,956
621% 2,748 MB/s
4K Read 42.1
4K Write 145
4K Mixed 56.2
212% 81.1 MB/s
DQ Read 2,465
DQ Write 2,000
DQ Mixed 2,204
1,658% 2,223 MB/s
50 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 77,520,798 SSDs tested

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 WD_BLACK SN850X 4TB Builds (Compare 866 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 56%
Gunboat
Desktop
Desktop 81%
Aircraft carrier
Workstation
Workstation 74%
Battleship

System: Dell Precision 7920 Tower

CPU
CPU: Intel Xeon Silver 4214R1stBench 70%, 89 samples45x
CPU: Intel Xeon Silver 41141stBench 63%, 670 samples33x
CPU: Intel Xeon Silver 4210R1stBench 69%, 106 samples32x
GPU
Quadro P4000NvidiaBench 67%, 12,628 samples64x
Quadro RTX 4000NvidiaBench 98%, 9,173 samples62x
Quadro RTX 5000NvidiaBench 131%, 1,749 samples55x
SSD
WD_BLACK SN850X 4TBNvmeBench 550%, 50 samples1x
RAM
HMA82GR7DJR8N-XN 4x16GBHynixBench 103%, 194 samples28x
HMA81GR7AFR8N-VK 8x8GBHynixBench 94%, 220 samples21x
HMA81GR7AFR8N-VK 4x8GBHynixBench 84%, 1,278 samples16x
EDIT WITH CUSTOM PC BUILDER

Popular WD_BLACK SN850X 4TB systems:

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Speed Comparisons

vs WD Black SN850X M.2 2TB
vs WD Black SN850X M.2 1TB
vs Crucial T700 M.2 4TB
vs WD Black SN850X M.2 4TB
vs Samsung 990 Pro M.2 2TB
vs Samsung 990 Pro M.2 4TB
vs Samsung 990 Pro M.2 1TB
vs Crucial T705 M.2 2TB
vs Crucial T705 M.2 1TB

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.

 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?
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The Best
CPUGPUSSD
Intel Core i5-12600K $159Nvidia RTX 4060 $295WD Black SN850X M.2 2TB $135
Intel Core i5-13600K $210Nvidia RTX 4060-Ti $380WD Black SN850X M.2 1TB $82
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $370
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