TEST: Western Digital WD_BLACK SN850 1TB M.2 SSD
Here you can find a detailed performance and benchmark test.
The the M.2 NVMe SSD WD_BLACK SN850 with 1TB (WDS100T1X0E-00AFY0) from Western Digital was tested.
| Technical data | |
| Manufacturer | Western Digital |
| Type | WDS100T1X0E-00AFY0 |
| Storage capacity | 1024 GB (931 GiB) |
| Read speed | 7000 MB/s |
| Write speed | 5300 MB/s |
| Interface | PCIe 4.0 x4 |
| Form factor | M.2 2280 |
| Memory module (NAND) | TLC |
| DRAM Cache | ✓ yes |
| TBW (Total Bytes Written) | 600 Terabyte |
| Controller | WD Black G2 (20-82-10034-A1) |
| Price | 158 USD (= 0,15 $ / GB) |
| Buy on Amazon | |
8590
0,15 $
Compared to the top performer*
*) Test result evaluated according to AS SSD Score within the same size.
AS SSD Benchmark 2.0
Standard performance test
The standard test was performed with a 5 GB file. Here, a total score of 8590 points was achieved.
| AS SSD | Read: | Write: |
|---|---|---|
| Seq in megabytes per second |
5872,31 MB/s |
5194,93 MB/s |
| 4K in megabytes per second |
75,68 MB/s |
211,02 MB/s |
| 4K-64Thrd in megabytes per second |
2598,19 MB/s |
2963,93 MB/s |
| Access time in milliseconds |
0,018 ms |
0,089 ms |
| Score | 3261 |
3694 |
| Total score | 8590 |
|
Copy Performance Test
A common everyday situation 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 Windows Copy command (the cache remains enabled). The practical test of 20.01.2021 shows the performance for simultaneous write and read operations. The lower the duration, the better.
| AS SSD Kopier-Benchmark | Transferrate: | Dauer: |
|---|---|---|
| ISO two large files |
2102,81 MB/s |
1,09 s |
| Program many small files |
785,64 MB/s |
8,96 s |
| Game small and large files |
1574,80 MB/s |
4,39 s |
Compression Performance Test
Here, the write as well as read speed (according to the manufacturer 7000 MB/s and 5300 MB/s) the Western Digital SSD is measured depending on the compressibility of the data.
CrystalDiskMark 7.0 Benchmark
Similar to AS SSD, two sequential and two random performance tests are performed.
| CDM | Read [MB/s] | Write [MB/s] |
|---|---|---|
| SEQ1M Q8T1 |
6964,33 |
5210,56 |
| SEQ1M Q1T1 |
4330,03 |
5225,56 |
| RND4K Q32T16 |
3561,45 |
2880,48 |
| RND4K Q1T1 |
81,29 |
240,45 |
Input/Output operations per second
| CDM | Read [IPOS] | Write [IPOS] |
|---|---|---|
| SEQ1M Q8T1 |
6.641,70 |
4.969,20 |
| SEQ1M Q1T1 |
4.129,40 |
4.983,50 |
| RND4K Q32T16 |
869.494,00 |
703.242,00 |
| RND4K Q1T1 |
19.846,40 |
58.704,10 |
Average latency
| CDM | Read [µs] | Write [µs] |
|---|---|---|
| SEQ1M Q8T1 |
1.203,73 |
1.606,80 |
| SEQ1M Q1T1 |
241,93 |
200,41 |
| RND4K Q32T16 |
569,97 |
726,94 |
| RND4K Q1T1 |
50,23 |
16,90 |
ATTO Disk Benchmark 4
Here a 256 MB file is written several times to the Western Digital M.2 SSD. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they can usually be written and read.
HD Tune Pro 5.75 Benchmark
HD Tune writes a 5 GB file to the Western Digital M.2 SSD. The transfer data of the read speed is displayed graphically. The minimum, maximum and average values are also determined. The determined access time and burst rate are also displayed.
SSD-Z 16 Benchmark
Similar to HD Tune, a 500 MB file is written to the Western Digital M.2 SSD here. is written. The transfer data is displayed. The more constant the line, the better. Unfortunately the tool does not work correctly from about 5,000 MB/s and no line (and partly wrong min and max data) is displayed.
Information about the test system can be found at the bottom of the home page.