Which is better, Samsung 990 EVO Plus 4TB or Samsung 990 PRO 4TB? July 2026 side-by-side with prices, specs, and verdict.
Cross-generation comparisons reveal whether you're paying for peak speed or sustained value. Samsung 990 EVO Plus 4TB vs Samsung 990 PRO 4TB at 4 TB is a perfect lens for that question.
Hardware-wise, the Samsung 990 EVO Plus 4TB runs on Samsung's Piccolo controller — DRAM-less with PCIe 4.0/5.0 dual-mode support. The Samsung 990 PRO 4TB pairs the in-house Samsung Pascal — engineered specifically for the 990 PRO at 8nm.
At a 29% price gap, the Samsung 990 PRO 4TB needs to be measurably better in your specific use case to justify the spend. For gaming and general PC use, the Samsung 990 EVO Plus 4TB's lower $/TB tilts the value equation decisively in its favor.
Samsung 990 PRO 4TB bundles a DRAM cache chip; Samsung 990 EVO Plus 4TB is DRAM-less. This sounds like a big deal but reviewers have been arguing for years about whether it actually matters in consumer use. For most workloads, no.
For PS5 expansion, both are PCIe Gen 4 M.2 2280 drives that meet Sony's minimum spec (7,250 MB/s read). The console can't take advantage of speeds beyond that, so save money by choosing the Samsung 990 EVO Plus 4TB. Generational difference matters mainly for sequential-heavy workloads. The Samsung 990 EVO Plus 4TB's 7,250 MB/s read beats Samsung 990 PRO 4TB's 7,450 on paper, though in practice both feel identical loading games. Heavy write workloads — video editing, RAW photo libraries, backup operations — favor the Samsung 990 PRO 4TB'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 Samsung 990 EVO Plus 4TB ranks #1 of 6 Gen 5 4 TB drives we track by $/TB, while the Samsung 990 PRO 4TB ranks #6 of 6 Gen 4 4 TB drives. That puts at least one of them near the top of the value table — a reasonable head-to-head to be choosing from.
As of July 27, 2026, these tracked drives undercut both the Samsung 990 EVO Plus 4TB and Samsung 990 PRO 4TB on $/TB:
Lean toward the Samsung 990 EVO Plus 4TB when the lower retail price ($585 vs $825), and better $/TB economics ($146.25/TB) top your priority list. The 990 EVO Plus uniquely supports both PCIe 4.0 x4 and PCIe 5.0 x2 modes — useful flexibility if you might upgrade motherboard generations.
Lean toward the Samsung 990 PRO 4TB when a dedicated DRAM cache chip top your priority list. Among consumer SSD makers, Samsung's PRO series consistently scores highest on long-term reliability surveys (Backblaze, Puget Systems Q1 2026 data).