WD Black SN750 1TB PCIe 3.0 NVMe SSD (2026)
The WD Black SN750 1 TB is the performance flagship of WD's PCIe 3.0 enthusiast line, posting 3,470 MB/s reads and 3,000 MB/s writes with class-leading sustained write throughput.
Controller & Memory
WD's SN750 pairs its first-generation in-house NVMe controller (WD NVMe Architecture) with SanDisk 64-layer 3D TLC NAND and an SK Hynix DDR4 DRAM chip. The 1 TB model uses 256Gb dies with 16 dies per package across two NAND packages on a single-sided M.2 2280 PCB. This single-sided design at 1 TB is a compatibility advantage over some double-sided competitors.
The 1 TB capacity posts the highest performance in the SN750 lineup: 3,470 MB/s reads, 3,000 MB/s writes, and 515K/560K random IOPS. Smaller capacities sacrifice write speed significantly -- the 250 GB writes at just 1,600 MB/s. The 2 TB model maintains 3,400 MB/s reads but drops writes slightly to 2,900 MB/s.
Competitors include the Samsung 970 EVO Plus and the SK hynix Gold P31. The SN750's signature strength is sustained write performance -- it maintains high throughput even after the SLC cache fills, making it well-suited for content creators who move large files. Its weakness is read responsiveness in real-world application benchmarks, where it trails both the Samsung and SK hynix drives. WD's Gaming Mode disables APST to reduce latency, but the improvement is marginal.
Storage Comparisons:
Black ZN750 Performance & Benchmarks
WD rates the 1 TB SN750 for up to 3,470 MB/s sequential reads and 3,000 MB/s sequential writes over PCIe 3.0 x4, with 515,000 random read IOPS and 560,000 random write IOPS. These are the peak figures across the SN750 lineup.
Western Digital Black ZN750 1 TB vs M.2 3.0 x 4 peers
Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 3.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.
- ADATA SX 8800 Pro 512 GB: 3,500 MB/s read, 2,700 MB/s write
- ADATA SX 8800 Pro 1 TB: 3,500 MB/s read, 2,700 MB/s write
- ADATA XPG Spectrix S40G RGB 256 GB: 3,500 MB/s read, 3,000 MB/s write
- ADATA XPG Spectrix S40G RGB 512 GB: 3,500 MB/s read, 3,000 MB/s write
- Western Digital Black ZN750 1 TB (this drive): 3,470 MB/s read, 3,000 MB/s write
The drive uses a tiered SLC write cache. During burst writes, performance hits the rated ceiling. Once the SLC cache exhausts, the SN750's native TLC write speed remains relatively high compared to many competitors -- this is its standout characteristic. Independent reviewers at Tom's Hardware consistently found the SN750 among the best PCIe 3.0 drives for sustained write workloads, even if its application responsiveness does not always lead the pack.
Gaming Mode in WD Dashboard disables low-power NVMe states to reduce controller wake-up latency. The measured improvement in synthetic latency benchmarks is small, and most users will not perceive a difference in everyday desktop use. Power efficiency is good under load but idle power consumption on desktop platforms is higher than some competitors.
Western Digital Black ZN750 vs Competitors
See how the Black ZN750 stacks up against other M.2 3.0 x 4 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
WD rates the 1 TB SN750 for 600 TBW of write endurance under a five-year limited warranty, ending when either threshold is reached. At 30 GB of writes per day -- a moderate workload that includes game installations and updates -- 600 TBW translates to roughly 55 years of use. The drive includes tiered SLC caching, thermal throttling, NAND management, and error correction. WD overprovisions the drive by approximately 9%. The SN750 does not support hardware encryption or secure erase in Parted Magic.
Western Digital Black ZN750 1 TB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 1 TB |
| Interface [?] | M.2 3.0 x 4 |
| Controller [?] | SanDisk 20-82-007011 |
| Memory type [?] | SanDisk 64L TLC |
| DRAM [?] | SK Hynix 1GB DDR4 SDRAM |
| Read speed (MB/s) [?] | 3470 |
| Write speed (MB/s) [?] | 3000 |
| Read IOPS [?] | 515000 |
| Write IOPS [?] | 560000 |
| Endurance (TBW) [?] | 600 |
| MTBF (million hours) [?] | 1.75 |
| Warranty (years) [?] | 5 |
Verdict: Is the Black ZN750 Worth It in 2026?
The WD Black SN750 1 TB is a strong PCIe 3.0 NVMe SSD for users who prioritize sustained write performance -- video editors, photographers, and anyone regularly moving large datasets. For pure gaming and everyday desktop responsiveness, the Samsung 970 EVO Plus and SK hynix Gold P31 offer slightly snappier read performance at similar prices. The SN750 remains a reliable choice with 600 TBW endurance and a five-year warranty, but it has been superseded by the PCIe 4.0 SN850 for builders on newer platforms.
+ Pros
- 3,470 MB/s reads, 3,000 MB/s writes
- Class-leading sustained write performance
- 515K/560K random read/write IOPS
- DDR4 DRAM cache
- 600 TBW endurance
- Single-sided M.2 2280 at 1 TB
- Five-year warranty
- Cons
- Read performance trails Samsung 970 EVO Plus in applications
- No hardware encryption
- No secure erase via Parted Magic
- High idle power draw on desktops
- Superseded by SN850 on PCIe 4.0 platforms
Buy this or similar SSD Storage:
Video Review
STEP-BY-STEP Boot drive setup: WESTERN DIGITAL BLACK SN750 M.2 NVMe SSD vs Samsung 970 EVO Plus
