Crucial P2 2TB vs Western Digital WD Green SN350 2TB
Western Digital WD Green SN350 2TB is at least the equal of the other on every measure that decides this, and ahead on at least one.
| 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 | $269.80at Newegg · captured 2026-09-13 | $239.99betterat Amazon.com · captured 2026-09-13 |
| Price per TB | $134.90 | $120.00better |
| 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.
Price
Crucial P2 2TB is $269.80 ($134.90 per TB); Western Digital WD Green SN350 2TB is $239.99 ($120.00 per TB).
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
Against the other, Western Digital WD Green SN350 2TB is even or ahead on every tracked measure and behind on none, which is the one case where the choice needs no compromise.
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.
- Which costs less per terabyte, Crucial P2 2TB or Western Digital WD Green SN350 2TB?
- Crucial P2 2TB is $269.80 ($134.90 per TB); Western Digital WD Green SN350 2TB is $239.99 ($120.00 per TB).
- Should you buy Crucial P2 2TB or Western Digital WD Green SN350 2TB?
- Against the other, Western Digital WD Green SN350 2TB is even or ahead on every tracked measure and behind on none, which is the one case where the choice needs no compromise.