The Samsung 990 EVO Plus is a practical middle ground for a PC upgrade. It brings fast Gen4-class storage, capacities up to 4TB and Samsung’s maintenance software in a slim M.2 board. Its appeal is the amount of useful storage you can add to an existing computer, especially one whose cooling arrangement favors a drive without a tall factory heatsink.
The PCIe 5.0 wording needs context: this drive uses two Gen5 lanes or four Gen4 lanes. It does not have the transfer ceiling of a four-lane Gen5 flagship. That is a sensible match for mainstream machines, provided its price leaves room between it and a more capable drive at the same capacity.
- PCIe 4.0 x4 or 5.0 x2
- TLC NAND
- Host Memory Buffer
The EVO Plus uses a small portion of host memory for address mapping instead of dedicated DRAM on the drive. For a mainstream system or game library, that design should be considered alongside the complete drive’s behavior, rather than treated as a reason to reject it automatically. The important question is whether your workload repeatedly pushes beyond short bursts.
In Tom’s Hardware’s original 2TB test, direct-to-TLC writes fell to around 1.5GB/s after the fast cache ran out; intermittent cache recovery raised the long-run average.1 A large copy can therefore take substantially longer than the advertised 6,300MB/s rate implies. This matters for regular footage dumps or large scratch-file writes more than for opening a document.
The 1TB model has a slightly lower rated read ceiling than the larger versions, but capacity should drive that choice. If doubling storage lets you keep a game library or current projects locally, it may improve the experience more than spending the same money on a faster but cramped drive.
Compatibility and Installation
- M.2 2280
- 80.15 × 22.15 × 2.38mm maximum
- No factory heatsink
The bare board works with a compatible laptop’s thermal arrangement or a desktop motherboard’s M.2 cover. Confirm the slot supports an 80mm NVMe drive and follow the computer maker’s cooling instructions. The absence of a large attached heatsink is helpful for fitting the drive; it is not a promise that every enclosure can keep it cool during prolonged work.
A compatible PCIe 3.0 slot can also use it at that slot’s lower speed. This is useful when replacing a small older SSD, although there is little reason to pay extra purely for the Gen5 label. Keep the original system drive intact until a migration is verified, or use the EVO Plus as additional storage when a second slot is available.
Software and Endurance
- Samsung Magician
- 600TBW per TB of capacity
- 5-year limited warranty
Magician is a practical reason to stay within Samsung’s range: it provides a familiar place to inspect drive health and check firmware. Samsung has issued a compatibility update for this model, so checking the installed version during setup is worthwhile.
Warranty coverage ends at the stated write limit or five years, whichever arrives first. The larger models scale that allowance with capacity. Choose enough space for active work, and keep a separate backup of important data; unused capacity and warranty coverage serve different purposes.
Alternatives
The original 990 EVO has lower advertised read and write limits and stops at 2TB. The Plus is more attractive for a new purchase when the price difference is modest, particularly if you need 4TB. Existing EVO owners should upgrade for a real capacity or workload constraint rather than the name change.
The Samsung 990 PRO adds onboard DRAM and offers factory-heatsink versions. Compare it when the prices converge or the installation benefits from an included cooler. For an ordinary laptop upgrade, the EVO Plus can be the more sensible purchase if it delivers the capacity you want at a meaningfully lower cost.
Verdict
The 990 EVO Plus is a useful capacity upgrade for mainstream PCs. It earns its place through a convenient form factor, sensible capacity range and software support. Buy it on those strengths and the price of the exact capacity, with realistic expectations for long transfers.