The test system used in this review is equipped with an Intel Core i7-6700K CPU, GIGABYTE GA-Z170X-UD3 motherboard, 32GB (16GB x 2) of Crucial Ballistix Sport LT DDR4 memory, Samsung 960 PRO 512GB SSD and a GIGABYTE GeForce GTX 1060 WINDFORCE OC 6G graphics card. For the operating system, I installed a fresh copy of Windows 10 Enterprise.
To test the performance of Western Digital's WD Black SN750 SSD, I ran a series of benchmarks using CrystalDiskMark, HD Tach RW, ATTO Disk Benchmark, AS SSD, HD Tune Pro, Anvil's Storage Utilities, Iometer and PCMark 8. For comparison, I've also included test results from the Samsung 970 EVO Plus, ADATA XPG SX8200 Pro, Crucial P1, ADATA XPG SX8200, Western Digital WD Black NVMe, Samsung 970 EVO, Samsung 970 PRO, Plextor M9Pe, Plextor M8Se, Patriot Hellfire, ADATA XPG SX8000, Samsung 960 PRO, Toshiba OCZ RD400, Samsung 950 PRO, Samsung 860 QVO, Samsung 860 PRO, Crucial MX500, Plextor M8V, Samsung T5, Crucial BX300, ADATA Ultimate SU900, Plextor S3C, Toshiba OCZ VX500, ADATA Ultimate SU800, Plextor S2C and Crucial MX300.
As I mentioned earlier, the WD Black SN750 uses Western Digital's Spectrum controller chip. Looking at the screenshot above, you can see that it performs equally well with both incompressible (0%) and compressible (100%) data.
CrystalDiskMark 5.1.2:
First, I ran a few quick tests using CrystalDiskMark. This benchmark tool measures the performance of a storage device by testing its sequential read and write speeds as well as its random read and write speeds using blocks 512K and 4K in size.
 WD Black SN750 1TB |
 ADATA XPG SX8200 Pro 512GB |
According to Western Digital, the 1TB WD Black SM750 is capable of reading at 3,470 MB/s and writing at 3,000 MB/s. Looking at the screenshot above, you can see that the drive had no problems reaching these speeds in CrystalDiskMark's sequential read and write tests.
 WD Black SN750 1TB - All 0x00, 0Fill |
 ADATA XPG SX8200 Pro 512GB - All 0x00, 0Fill |
The WD Black SM750 performed equally well when using highly compressible 0x00 (0 Fill) data. This time around, the drive was able to read at 3,497 MB/s and write at 3,021 MB/s.
HD Tach RW 3.0.4.0:
Next, I used HD Tach to test the WD Black SN750's read, write and burst speeds as well as its seek times and CPU usage.
The WD Black SN750's performance was hit and miss when tested with HD Tach. While the drive was able to write at 1,588.0 MB/s, its read speed averaged out at only 1654.6 MB/s.
ATTO Disk Benchmark 2.46:
I also used ATTO Disk Benchmark to test the WD Black SN750's sequential read and write speeds. The tests are run using blocks ranging in size from 0.5KB to 8192KB and the total length set to 256MB.
 WD Black SN750 1TB |
 ADATA XPG SX8200 Pro 512GB |
When tested with ATTO, the WD Black SN750's read speeds topped out at about 3,446 MB/s and its write speeds at 3,022 MB/s.
