Crucial P2 2TB vs Western Digital WD Green SN350 2TB
At least one of these has no price the site currently tracks, so what follows weighs specifications alone.
| Specification | CrucialP2 2TB | Western DigitalWD Green SN350 2TB |
|---|---|---|
| Capacity (GB) | 2000 | 2000 |
| Sequential read (MB/s) | 2400 | 3200better |
| Sequential write (MB/s) | 1800 | 3000better |
| Current best price | £399.90at Amazon.co.uk · captured 2026-09-13 | — |
| Price per TB | £199.95 | — |
| DRAM cache | No | No |
| NAND type | tlc | qlc |
| Controller | — | WD Polaris MP16 |
How these two compare
Sequential throughput
Crucial P2 2TB states 2400 MB/s read and 1800 MB/s write; Western Digital WD Green SN350 2TB states 3200 MB/s read and 3000 MB/s write, both over PCIe. Sequential numbers like these describe large sustained transfers; the responsiveness you notice day to day tracks random access more closely than the peak figures do.
DRAM cache
On the cache question: Crucial P2 2TB is DRAM-less, and Western Digital WD Green SN350 2TB is DRAM-less. The DRAM keeps the flash-translation table close, sparing a lookup on nearly every access; a drive without it leans on host memory or its own flash, which usually shows as slower sustained random writes rather than in the headline sequential numbers.
NAND and controller
On the flash itself: Crucial P2 2TB uses TLC, and Western Digital WD Green SN350 2TB uses QLC. NAND tiers count bits per cell — more bits pack more capacity into the same silicon but shorten write endurance and slow sustained writes, which is why QLC sits below TLC on lasting performance even when the sequential numbers match. Controller: Crucial P2 2TB's controller is not stated and Western Digital WD Green SN350 2TB uses the WD Polaris MP16. The controller runs wear-levelling, error correction and the mapping table, so it shapes sustained and random behaviour as much as the flash does — though the model name alone predicts little without testing.
Which to buy
The site holds no current price for at least one of these, so it cannot call the buy on cost. Judge them on the specifications above — at the same capacity and interface, two drives usually part on things like the DRAM cache, the NAND tier, endurance and warranty, so weigh whichever of those the sections above report.
Common questions about this pair
- Which is faster, Crucial P2 2TB or Western Digital WD Green SN350 2TB?
- Crucial P2 2TB states 2400 MB/s read and 1800 MB/s write; Western Digital WD Green SN350 2TB states 3200 MB/s read and 3000 MB/s write, both over PCIe. Sequential numbers like these describe large sustained transfers; the responsiveness you notice day to day tracks random access more closely than the peak figures do.
- Should you buy Crucial P2 2TB or Western Digital WD Green SN350 2TB?
- The site holds no current price for at least one of these, so it cannot call the buy on cost. Judge them on the specifications above — at the same capacity and interface, two drives usually part on things like the DRAM cache, the NAND tier, endurance and warranty, so weigh whichever of those the sections above report.