# WD Black SN750 SE 1TB PCIe 4.0 NVMe SSD Specifications (2026)

WD Black SN750 SE 1TB pairs a Phison E19T controller with SanDisk 3D TLC NAND and Host Memory Buffer for PCIe Gen4 reads of 3,600 MB/s and writes of 2,800 MB/s.

Quick answer: The WD Black SN750 SE 1TB delivers capable entry-level PCIe 4.0 performance with the Phison E19T controller, SanDisk 3D TLC NAND, and Host Memory Buffer technology. At 3,600 MB/s read and 2,800 MB/s write, it offers a solid upgrade over SATA and PCIe 3.0 storage at an accessible price point.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 1 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5019-E19T |
| Memory type | SanDisk |
| DRAM cache | HMB (no DRAM) |
| Sequential read | 3600 MB/s |
| Sequential write | 2800 MB/s |
| Random read IOPS | 640000 |
| Random write IOPS | 640000 |
| Endurance | 600 TBW |
| MTBF | 1750000 |
| Warranty | 5 years |

## Performance

The 1TB SN750 SE delivers 3,600 MB/s sequential read and 2,800 MB/s write throughput over PCIe 4.0 x4. While these figures fall below mid-range Gen4 drives at 5,000+ MB/s, they represent a meaningful improvement over SATA SSDs limited to approximately 550 MB/s.

Random 4K performance is adequate for gaming and everyday desktop use. The HMB DRAMless design shows limitations under heavy mixed workloads compared to DRAM-equipped drives, but for game loading, system boot, and application launches the drive performs competently.

The dynamic SLC cache handles burst write operations well for typical consumer scenarios. During prolonged file transfers exceeding the cache capacity, write speeds drop to the native TLC pace of the SanDisk NAND. The 1TB capacity provides an SLC cache pool sized for everyday transfer needs.

Thermal output from the E19T controller is low, making the SN750 SE one of the cooler Gen4 SSDs. This makes it an excellent choice for laptops, Mini-ITX builds, and any system where M.2 slot cooling is minimal. The SN750 SE targets budget gamers who want Gen4 interface compatibility without paying flagship prices, and the Phison E19T controller delivers adequate performance for this market segment.

## Endurance, TBW & Warranty

Western Digital backs the Black SN750 SE 1TB with a five-year limited warranty from the date of original purchase. The endurance rating stands at 600 TBW, meaning Western Digital guarantees the drive can handle at least 600 terabytes of total data written before the warranty expires, whichever limit is reached first. This works out to approximately 0 GB of writes per day sustained over five years of continuous use. Western Digital global support infrastructure handles warranty claims through authorized retailers and regional service centers. The five-year warranty reflects confidence in the reliability of the Phison E19T controller platform and SanDisk 3D TLC NAND flash under normal consumer operating conditions.

## Pros and Cons

**Pros:**

- 3,600 MB/s reads deliver improvement over PCIe 3.0 speeds
- SanDisk 3D TLC NAND with Western Digital vertical integration
- HMB technology maintains performance without dedicated DRAM
- Low thermal output suitable for laptops and compact builds
- Five-year warranty with 600 TBW endurance
**Cons:**

- DRAMless design limits sustained random performance
- Speeds below mid-range Gen4 drives at 5,000+ MB/s
- SLC cache exhaustion during prolonged large file transfers
- Limited appeal for professional workloads beyond gaming


## Verdict

The WD Black SN750 SE 1TB delivers capable entry-level PCIe 4.0 performance with the Phison E19T controller, SanDisk 3D TLC NAND, and Host Memory Buffer technology. At 3,600 MB/s read and 2,800 MB/s write, it offers a solid upgrade over SATA and PCIe 3.0 storage at an accessible price point.

The 600 TBW endurance and five-year warranty from Western Digital provide good long-term confidence. Low thermal output makes the SN750 SE versatile across desktop and laptop platforms. If you want reliable Gen4 gaming storage from a major brand, the SN750 SE 1TB is a sensible option worth considering.

## Frequently Asked Questions

### Does the WD Black SN750 SE 1TB have DRAM?

No, it uses Host Memory Buffer (HMB) technology instead of a dedicated DRAM chip. The Phison E19T is a DRAMless controller designed for budget Gen4 storage.

### What controller does the SN750 SE use?

It uses the Phison PS5019-E19T, a DRAMless PCIe 4.0 x4 NVMe controller designed for entry-level Gen4 performance with low power consumption.

### Is the SN750 SE good for gaming?

Yes, the 3,600 MB/s read speed provides faster game loading than SATA drives, and the 1TB capacity is suitable for a gaming library.

### Does the SN750 SE need a heatsink?

No, the E19T controller generates minimal heat and typically does not require a heatsink. It works well in laptops and builds without M.2 cooling.

### What is the TBW endurance of the SN750 SE 1TB?

The 1TB model is rated at 600 TBW, backed by Western Digital five-year limited warranty. This translates to roughly 0 GB of writes per day over five years.

### Is the SN750 SE compatible with PCIe 5.0 motherboards?

Yes, the drive works in PCIe 5.0 M.2 slots at its native Gen4 speeds of 3,600 MB/s read. It cannot utilize the extra Gen5 bandwidth but functions normally.

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Last updated: 2026-05-23. Source: https://ssdrive.net/western-digital-black-sn750-se-1-tb