Today we are taking a look at the WD Black SN750 SE 1TB NVMe SSD. This is a somewhat odd drive, in my opinion, in that it is technically a PCIe 4.0 update to the WD Black SN750 drive, but the performance specifications for the drive have not increased in line with the move to the faster PCIe interface. In addition, the SN750 SE is a DRAM-less drive, whereas the previous SN750 had a DRAM cache. I will reserve judgment until after the testing is done of course, but I am fully expecting to be a bit confused by the end of the review!
WD SN750 SE 1TB NVMe SSD
The WD SN750 SE 1TB comes in a single-sided M.2 2280 (80mm) form factor.
Physically the exterior of the SN750 SE looks very similar to the WD Blue SN550; an almost barren-looking PCB with only a couple of major components. We have a single SanDisk/WD NAND package containing TLC flash. Separated by some physical space on the PCB we find the Phison PS5019-E19 controller. The presence of the Phison controller itself is unusual since WD typically uses its own controller designs on its SSDs. In another similarity to the WD Blue SN550, there is no DRAM cache and instead, host memory buffer (HMB) technology is used.
The rear of the drive has a bunch of logos, but nothing else.
WD SN750 SE Specs
The WD SN750 SE line of SSDs comes in at capacities between 250GB and 1TB.
If the WD SN750 SE was a PCIe 3.0 drive, these specs would be great; on a PCIe 4.0 drive, they are very underwhelming. 3600 MB/s read speed is a bit ahead of the original SN750, but 2830 MB/s write speed falls short of the original SN750. Neither of these rated performance levels gets anywhere near pushing the boundaries of a PCIe 4.0 connection and will not hold up well compared to other PCIe 4.0 drives. The 1TB drive sports 600 TBW endurance, which is seemingly the standard for a 1TB drive and matches the previous SN750. We do at least feature the 5 year warranty that has come to be standard for premium SSDs.
CrystalDiskInfo can give us some basic information about the SSD, and confirms we are operating at PCIe 4.0 x4 speeds using NVMe 1.4.
Test System Configuration
We are using the following configuration for this test:
- Motherboard: ASUS PRIME X570-P
- CPU: AMD Ryzen 9 5900X (12C/24T)
- RAM: 2x 16GB DDR4-3200 UDIMMs
Our testing uses the WD SN750 SE 1TB as the boot drive for the system, installed in the M.2_1 slot on the motherboard. The drive is filled to 85% capacity with data and then some is deleted, leaving around 60% used space on the volume.
Next, we are going to get into our performance testing.