Western Digital Black SN750 NVMe SSD vs Western Digital Black SN850X 2 TB NVMe SSD
Side-by-side comparison of features, pricing, ratings, and alternatives.
The WD Black SN750 delivers blazing‑fast read/write speeds up to 3,470 MB/s, making it ideal for demanding games, 4K video editing, and large file transfers. Built on a 3D NAND architecture, it offers reliable endurance and low latency for a smooth computing experience. Designed for the M.2 2280 slot, the SN750 fits seamlessly into modern desktops and laptops, providing a sleek, low‑profile solution without sacrificing capacity—available from 250 GB to 2 TB.
The WD Black SN850X 2 TB is a high‑end PCIe 4.0 NVMe solid‑state drive that delivers up to 7,300 MB/s sequential reads and 6,300 MB/s writes, making it ideal for demanding workloads. It features a heatsink‑compatible design, low latency, and a five‑year limited warranty for peace of mind. Designed for gamers, creators, and power users, the SN850X offers rapid game load times, fast 4K video editing, and swift data transfers. Its firmware is optimized for Windows 11 and supports the latest NVMe 2.0 features, ensuring future‑proof performance.
- Blazing sequential read/write performance
- Robust 5‑year warranty
- Thermal Guard heat management
- Wide capacity range
- Industry‑leading sequential read/write speeds
- Heatsink‑compatible design for sustained performance
- Five‑year warranty for reliability
- Optimized for Windows 11 DirectStorage
- No built‑in DRAM cache on lower capacities
- Limited to PCIe 3.0, not PCIe 4.0
- RGB version costs more
- Higher price point than SATA SSDs
- Requires PCIe 4.0 motherboard for full speed
- No bundled heatsink in base model
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The Verdict
AI-generated from listing dataThe SN850X offers PCIe 4.0 speeds roughly double the SN750 but costs about twice as much; choose based on need for top‑tier performance versus budget.
Key differences
- •Sequential read/write: SN850X up to 7,300/6,300 MB/s vs SN750 up to 3,470/3,000 MB/s.
- •PCIe generation: SN850X uses PCIe 4.0 x4, SN750 limited to PCIe 3.0 x4.
- •Price: SN850X MSRP $199.99 for 2 TB; SN750 $99 for 500 GB (≈$200 for 2 TB would be higher).
- •Heat management: SN850X is heatsink‑compatible (no built‑in heatsink), SN750 offers optional built‑in heat‑sink via Thermal Guard.
- •NVMe spec: SN850X supports NVMe 2.0; SN750 supports NVMe 1.3.
Performance
SN850X delivers up to 7,300 MB/s read and 6,300 MB/s write, roughly double SN750’s 3,470/3,000 MB/s.
Build quality
Both use similar M.2 2280 form factor and weight (~8 g); heat solutions differ but neither includes a built‑in heatsink.
Connectivity
SN850X uses PCIe 4.0 x4, offering higher bandwidth than SN750’s PCIe 3.0 x4.
Power & efficiency
PCIe 3.0 (SN750) generally consumes less power than PCIe 4.0 (SN850X) for comparable workloads.
Compatibility
SN750 works on any PCIe 3.0 or newer slot; SN850X requires a PCIe 4.0 motherboard for full speed.
Price & value
SN750 MSRP $99 for 500 GB (≈$200 for 2 TB) versus SN850X $199.99 for 2 TB, making SN750 cheaper per GB.
Warranty & support
Both provide a five‑year limited warranty and include WD software tools.
Choose Western Digital Black SN750 NVMe SSD if…
Budget‑conscious gamers/content creators with PCIe 3.0 systems or who don’t need top‑tier speeds.
Choose Western Digital Black SN850X 2 TB NVMe SSD if…
Enthusiasts needing maximum PCIe 4.0 throughput for gaming, 4K video editing, or DirectStorage.
Common questions
Will the SN850X work in my older PCIe 3.0 motherboard?
It will operate, but will be limited to PCIe 3.0 speeds, far below its advertised 7,300 MB/s read rate.
Do I need to buy a separate heatsink for the SN850X?
The SN850X is heatsink‑compatible but does not include a built‑in heatsink; a third‑party or WD heatsink is required for optimal cooling.
Which drive offers better long‑term endurance?
Endurance is not specified for the SN850X; the SN750 lists up to 600 TBW for the 1 TB model.