Which is better, WD_BLACK SN7100 2TB or Crucial P310 4TB? September 2026 side-by-side with prices, specs, and verdict.
Both run on Gen 4 hardware but at different capacities: 2 TB for the WD_BLACK SN7100 2TB versus 4 TB for the Crucial P310 4TB. Whether the larger drive's $/TB advantage justifies the higher upfront cost depends on how much you actually need.
Hardware-wise, the WD_BLACK SN7100 2TB runs on the SanDisk A101 — a more recent design from the WD/SanDisk lineup. The Crucial P310 4TB pairs Phison's E27T — a four-channel Gen 4 controller for HMB designs.
On warranty endurance the Crucial P310 4TB carries 1,760 TBW against WD_BLACK SN7100 2TB's 1,200 TBW. Both will outlast typical use, but the gap matters if you're doing professional content work.
PS5 owners get no measurable benefit from either drive's peak speed because Sony's internal NVMe controller throttles to ~5,500 MB/s; treat WD_BLACK SN7100 2TB and Crucial P310 4TB as interchangeable here and let price decide. Heavy write workloads — video editing, RAW photo libraries, backup operations — favor the WD_BLACK SN7100 2TB's 6,900 MB/s sustained write speed. Both drives use the 2280 form factor, which is too long for Steam Deck or ROG Ally — you'd need a 2230 variant if either manufacturer offers one, or a dedicated handheld-format drive instead.
Market context: the WD_BLACK SN7100 2TB ranks #6 of 11 Gen 4 2 TB drives we track by $/TB, while the Crucial P310 4TB ranks #4 of 6 Gen 4 4 TB drives. Neither is a value leader right now — if $/TB is your priority, check the cheaper alternatives below before committing.
Lean toward the WD_BLACK SN7100 2TB when the lower retail price ($305 vs $574) top your priority list.
Lean toward the Crucial P310 4TB when better $/TB economics ($143.50/TB), and a higher TBW endurance rating (1,760 TBW) top your priority list.