The Samsung 990 EVO Plus 1TB is an interesting middle-tier drive that supports both PCIe Gen 4×4 and PCIe Gen 5×2 modes — automatically negotiating the best available interface on the host. At around $74 it pairs sequential reads near 7,150 MB/s with a DRAM-less HMB design and Samsung V-NAND TLC. This Samsung 990 EVO Plus 1TB review covers the speeds, the unusual bifurcation, real-world use, PS5 compatibility, value and verdict.
Prime Samsung 990 EVO Plus SSD 1TB, PCIe Gen 4x4, Gen 5x2 M.2 2280, Speeds Up-to 7,150 MB/s, Upgrade Storage for PC/Laptops, HMB Technology and Intelligent Turbowrite 2.0, (MZ-V9S1T0B/AM)
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Quick answer: Our top pick in 2026 is the Form factor — our #1 rated choice. See the full ranked comparison, alternatives and buying advice below.
Samsung 990 EVO Plus 1TB at a Glance
| Component | Specification |
|---|---|
| Form factor | M.2 2280, single-sided |
| Interface | PCIe 4.0 x4 NVMe / PCIe 5.0 x2 NVMe (auto-negotiated) |
| Capacity | 1TB (also 2TB and 4TB) |
| Sequential read | Up to ~7,150 MB/s |
| Sequential write | Up to ~6,300 MB/s |
| Random read IOPS | Up to ~1,050K (4K QD32) |
| DRAM cache | No — Host Memory Buffer (HMB) |
| NAND type | Samsung V-NAND TLC |
| Warranty | 5-year limited / ~600 TBW for 1TB |
| Approx price | around $74 |
Speeds & Performance
The 990 EVO Plus is the more interesting half of Samsung’s mainstream Gen 4 line because of its dual-mode interface. On a standard Gen 4 board it runs as a PCIe 4.0 x4 drive; on a current Gen 5 board, if the slot supports x2 link width, it can run as PCIe 5.0 x2 — which is the same effective bandwidth as Gen 4 x4 but with the option for future motherboards to bifurcate slots cleverly. Practically, headline numbers are similar in both modes — around 7,150 MB/s sequential read and 6,300 MB/s sequential write.
Real-world feel is very good — fast OS boots, quick game launches and smooth DirectStorage performance. The EVO Plus sits in the mainstream Gen 4 band, so it does not reach the absolute ceiling of the interface like the 990 PRO does, but the difference is far smaller in practice than the spec sheet suggests. For most gamers the EVO Plus and the PRO feel similar in everyday use. For broader context see our best NVMe SSDs for gaming guide.
The dual-mode interface is mostly forward-thinking — current motherboards rarely expose Gen 5 x2 slots to consumers, so in practice almost everyone running an EVO Plus today is using it as a Gen 4 x4 drive. The benefit comes later, as boards begin to bifurcate Gen 5 lanes between primary GPU and storage more flexibly, where x2-supporting drives like this one will be able to slot in without wasting half their available bandwidth. It is a small future-proofing detail that may pay off later in the drive’s life.
DRAM Cache & Endurance
The key technical difference from the 990 PRO is that the EVO Plus is a DRAM-less design — it uses Host Memory Buffer (HMB), borrowing a small slice of the host system’s RAM to cache mapping tables instead of carrying onboard DRAM. HMB works very well for typical consumer workloads — Windows, applications, gaming — and is the design choice that lets Samsung price the EVO Plus considerably below the PRO. The trade-off is that under sustained concurrent writes the EVO Plus does not hold performance as well as a DRAM-backed drive, which matters more for heavy creative work than for gaming.
Endurance at 1TB is rated around 600 TBW over a 5-year limited warranty — comfortably in excess of normal gaming and productivity use. The single-sided design suits slim laptops and compact builds, and the Samsung V-NAND TLC flash is the same mature technology used in the PRO line. The shared NAND technology is part of why the EVO Plus feels so close to the PRO in many real-world tasks — same flash, same warranty, different controller and DRAM strategy.
Gaming & Workstation Use Cases
For pure gaming, the 990 EVO Plus is excellent value — the HMB design holds up perfectly well under typical game-load and DirectStorage workloads, and the price advantage over the PRO is real. Loading a game from the EVO Plus and from the PRO feels essentially the same. This is the drive for buyers who want a quality Samsung NVMe at a sensible price and primarily play games.
For heavier workstation use — sustained large file transfers, prolonged 4K video edits, AI workloads — the PRO’s DRAM cache still has the edge under sustained concurrent writes. Buyers who mostly game with occasional creative work will not feel a difference; buyers who run heavy creative workloads daily should stretch to the 990 PRO instead.
PS5 Compatibility & Heatsink
The 990 EVO Plus easily clears the PS5’s 5,500 MB/s read requirement and fits the console’s M.2 expansion slot. It is a strong value pick for PS5 expansion — Samsung quality and validated speeds at a more accessible price than the PRO. Sony requires a fitted heatsink, so plan to fit a separate M.2 heatsink from our best M.2 SSD heatsinks roundup; the EVO Plus does not ship with an optional heatsink variant in all regions.
For PS5 buyers comparing options, our best PS5 expansion SSD guide covers the WD_BLACK SN850P (Sony-validated) and other strong alternatives in this price band.
Value & Price Per TB
At around $74 for 1TB, the 990 EVO Plus works out to roughly $0.074 per gigabyte — meaningfully cheaper than the PRO at the same size, while retaining Samsung’s brand, mature firmware, V-NAND flash and 5-year warranty. For buyers who do not need DRAM cache, this is one of the best value mainstream Gen 4 picks available. The 2TB is the better $/GB; the 4TB offers the most capacity for those building a single-drive system. Samsung also discounts the EVO Plus line regularly during major sales events, so buyers who can wait will often see the 1TB on offer below this listed price.
Verdict
The Samsung 990 EVO Plus 1TB is a smart middle-tier pick. It delivers Samsung’s brand, mature firmware and V-NAND TLC at a price that undercuts the 990 PRO, and its dual-mode Gen 4 / Gen 5 interface is a useful future-proofing detail. For gaming and mainstream productivity it is a strong recommendation; only buyers running heavy sustained creative workloads should reach for the DRAM-backed PRO instead. See our best NVMe SSDs for gaming guide for direct comparisons.
Frequently Asked Questions
What does Gen 4×4 / Gen 5×2 actually mean?
The drive supports two interface modes. On a standard Gen 4 board it runs as PCIe 4.0 x4; on a Gen 5 board with x2 bifurcation it runs as PCIe 5.0 x2 — both providing similar bandwidth, with future flexibility for clever board designs.
Is the 990 EVO Plus as fast as the 990 PRO in real use?
For gaming and mainstream productivity, very close — the difference is far smaller than the spec sheet suggests. For heavy sustained creative workloads, the PRO’s DRAM cache still has the edge.
Does the 990 EVO Plus have DRAM?
No. It is a DRAM-less design using Host Memory Buffer (HMB). HMB works well for typical consumer use; for very heavy mixed workloads a DRAM-cached drive holds performance better.
Is the 990 EVO Plus good for PS5?
Yes. It exceeds the PS5’s 5,500 MB/s read requirement and fits the M.2 expansion slot. You will need to fit a separate heatsink to meet Sony’s requirements.
More NVMe SSD Reviews
- WD_BLACK SN850X 2TB Review: Premium Gen 4 NVMe SSD
- WD_BLACK SN850X 1TB Review: Premium Gen 4 NVMe SSD
- WD_BLACK SN850X 2TB with Heatsink Review: PS5-Ready Gen 4 SSD
- WD_BLACK SN850X 4TB Review: High-Capacity Gen 4 NVMe SSD
- WD_BLACK SN850P 2TB Review: PS5 Licensed Storage Expansion
- WD_BLACK SN7100 2TB Review: Compact Gen 4 NVMe SSD
- Crucial P310 1TB Review: Compact Gen 4 NVMe SSD (7,100 MB/s)
- Samsung 9100 PRO 1TB Review: PCIe Gen 5 NVMe SSD (2026)
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