Western Digital WD_BLACK SN8100 1TB M.2 SSD

Here you will find a detailed speed, performance and benchmark test review. Tested was the M.2 NVMe SSD WD_BLACK SN8100 with 1TB (WDS100T1X0M-00CMT0) from the brand Western Digital.

Performance score 
12643
Price/GB
0.26 $
Read
14,900 MB/s
 Write
11,000 MB/s
Connector
M.2 2280
Interface
PCIe 5.0 x4
Technical specifications (manufacturer information)
Product image Test Winner Product image WD_BLACK SN8100
Manufacturer Western Digital  
Model number WDS100T1X0M-00CMT0
Capacity 1024 GB (931 GiB)
pSLC cache 325 GB approx.
Read speed 14900 MB/s
Write speed 11000 MB/s
Interface PCIe 5.0 x4
Connector M.2 2280
Memory module (NAND) TLC
DRAM cache ✓ Yes
TBW (Total Bytes Written) 600 terabyte
Warranty 5 Years
Controller Silicon Motion SM2508

Product
Score
Price
Western Digital WD_BLACK SN8100 2TB
13183
400 $
  Current price
~ 270 $
(= 0.26 $ / GB)
In stock
Buy now  
Retailer     #ad
Compare product Compared to the test winner*
Read speed
99 %
Write speed
85 %
*) Test result rated by AS SSD score within the same capacity.

v0.275a
OS: 10.0 build 26200 
Drive     : 0(NVME)
Scsi      : 1
Driver    : W10
Model     : WD_BLACK SN8100 1000GB                  
Fw        : 830ZRR02
Size      : 953869 MB [1000.2 GB]
LBA Size  : 512
AdminCmd  : 0x00 0x01 0x02 0x04 0x05 0x06 0x08 0x09 0x0A 0x0C 0x10 0x11 0x14 0x80 0x81 0x82 0x84 0xC0 0xC1 0xC2 0xDF 0xE2 0xE4 0xE5 0xE9 0xEA 0xF1
I/O Cmd   : 0x00 0x01 0x02 0x04 0x05 0x08 0x09 0x0C
Controller: SM2508 [SM2508AC] 
FW revision: G2R0Y3MA
ROM version: 2508ACROM:X0613A
--- FW params ---
FlashID : 0x45,0x48,0xa8,0x3,0x7a,0xe6,0x0,0x0 - Sandisk 218L BiCS8 TLC 16k 1024Gb/CE 1024Gb/die 4Plane/die
Channel               : 8
Ch map                : 0xFF
CE map                : 0x01
Pages/Block           : 3270
First Fblock          : 3
Total Fblock          : 687
Bad Block From Pretest: 28
Start TLC/MLC Fblock  : 26
DRAM Info             : [0x03 0x52]
IOCtl: NVME_W10_GetLog 0x1!
Telemetry unavailable

We put the Western Digital NVMe M.2 SSD through a detailed test. You can find the test result / test report here:

AS SSD Benchmark

Standard performance test

The standard test was performed with a 5 GB file. A total score of 12643 points was achieved.

AS SSD Benchmark Screenshot: TEST: Western Digital WD_BLACK SN8100 1TB M.2 SSD
AS SSD Read: Write:
Seq
in megabytes per second
11,167.70 MB/s
10,631.40 MB/s
4K
in megabytes per second
87.97 MB/s
214.34 MB/s
4K-64Thrd
in megabytes per second
3,300.48 MB/s
4,590.61 MB/s
Access time
in milliseconds
0.020 ms
0.115 ms
Score
4505
5868
Total score 
12643

Copy performance test

A common everyday scenario is simulated here. Three test folders are created:

  • ISO (folder with two large files)
  • Program (folder with many small files)
  • Game (folder with small and large files)

The three folders are copied using the Windows copy command (cache remains enabled). The real-world test from 18 January 2026 shows performance during simultaneous write and read operations. The lower the duration, the better.

AS SSD TEST: Western Digital WD_BLACK SN8100 1TB M.2 SSD
AS SSD Copy Benchmark Transfer rate: Duration:
ISO
two large files
3,975.63 MB/s
0.58 s
Program
typical program folder with many small files
1,158.77 MB/s
6.07 s
Game
a game folder with small and large files
2,736.63 MB/s
2.52 s

Compression performance test

Here, speed is measured depending on how compressible the data is.

AS SSD TEST: Western Digital WD_BLACK SN8100 1TB M.2 SSD

CrystalDiskMark Benchmark

Similar to AS SSD, two sequential and two random performance tests are carried out here and the write and read speed (manufacturer specs: 14900 MB/s and 11000 MB/s) the Western Digital SSD is measured.

CrystalDiskMark Benchmark Screenshot: TEST: Western Digital WD_BLACK SN8100 1TB M.2 SSD
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
14,773.90
11,930.80
SEQ1M
Q1T1
9,017.99
9,981.80
RND4K
Q32T16
5,842.39
4,514.95
RND4K
Q1T1
99.30
234.04

IOPS (Input/Output operations per second)

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
14,089.50
11,378.10
SEQ1M
Q1T1
8,600.20
9,519.40
RND4K
Q32T16
1,426,360.00
1,102,280.00
RND4K
Q1T1
24,244.10
57,137.70

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
566.30
699.38
SEQ1M
Q1T1
116.15
104.92
RND4K
Q32T16
347.49
449.35
RND4K
Q1T1
41.15
17.41

HD Tune Pro long-term test

A long-term test was performed to fully utilize the storage. You can see at what point the cache (if present) becomes full and write performance drops. A test file of 400 GB was written to the medium. After approx. 325 GB, the cache was full and performance was throttled.
The test file could at least be read with an average read speed of 11,233 MB/s and written at 5,386 MB/s.

HD Tune endurance test TEST: Western Digital WD_BLACK SN8100 1TB M.2 SSD

ATTO Disk Benchmark

Here, a 256 MB file is written to the Western Digital NVMe M.2 SSD multiple times. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster writing and reading usually becomes.

ATTO Disk Benchmark TEST: Western Digital WD_BLACK SN8100 1TB M.2 SSD

Markus
You can find information about the test system at the bottom of the homepage.
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