Compare Crucial P310 4TB and Lexar NM790 4TB: prices, speeds, $/TB. Which to buy in July 2026? Full spec breakdown.
Both the Crucial P310 4TB and Lexar NM790 4TB sit in the Gen 4 category at 4 TB, so the matchup turns on controller efficiency, cache topology, and current pricing rather than raw class differences.
Hardware-wise, the Crucial P310 4TB runs on the DRAM-less Phison E27T, common in value-tier 2TB and 4TB Gen 4 drives. The Lexar NM790 4TB pairs MaxioTech's MAP1602 silicon, the default choice for budget Gen 4 drives in 2024-2026.
On warranty endurance the Lexar NM790 4TB carries 3,000 TBW against Crucial P310 4TB's 1,760 TBW. Both will outlast typical use, but the gap matters if you're doing professional content work.
If this purchase is for a PS5 storage expansion, the comparison flattens — Sony's PCIe Gen 4 controller normalizes both Crucial P310 4TB and Lexar NM790 4TB to roughly equal in-game load times. The cheaper drive is the smart pick. 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.
How do these two fit the wider Gen 4 4 TB field? Out of 6 tracked drives, the Crucial P310 4TB is #3 on $/TB and the Lexar NM790 4TB is #1. That puts at least one of them near the top of the value table — a reasonable head-to-head to be choosing from.
At $127.50/TB, the Lexar NM790 4TB is already among the cheapest 4 TB drives we track — nothing in this class undercuts it. See the full $/TB ranking.
The Crucial P310 4TB fits buyers who prefer its specific performance profile or have brand preference for Crucial.
Pick the Lexar NM790 4TB if you value the lower retail price ($510 vs $519), better $/TB economics ($127.50/TB), and a higher TBW endurance rating (3,000 TBW). Budget-tier drives like the Lexar NM790 4TB have closed the gap with premium NVMes — the MAP1602 controller is genuinely competitive for everyday workloads at half the price.