Best 4TB NVMe SSDs of 2026

Samsung rates the 990 EVO Plus for PCIe 4.0 x4 or PCIe 5.0 x2, which reads like a footnote until you're standing over a board with a slot wired for two Gen5 lanes. It's the most adaptable drive here, and on a laptop or a recent motherboard where the M.2 socket isn't the full-width one you assumed, that flexibility turns a return into an install.

At 7,250/6,300 MB/s it's fast without being the fastest — a step behind the NM790 on paper and close to it in the things you actually notice, like how long a large install takes and how quickly the desktop settles after a boot. What we paid closer attention to was heat. Samsung's nickel-coated controller and the drive's efficiency kept it inside normal operating temperatures without a heatsink at all, which is more than the Gen5 drives here manage.

The wrinkle is firmware. Magician, Samsung's management app, can decline to update the drive on some systems and hand you a compatibility message instead, so plan to run the update from another machine or accept what shipped. Past that, this is the least dramatic drive in the group: it shows up in BIOS, it formats, and it stops asking for attention — which is the highest compliment storage gets.

Small machines are where a 4TB drive earns its keep and where it does the most damage: a handheld or a thin laptop has no airflow to spare, and a hot drive either throttles or eats the battery. The SN7100 is the one here designed around that problem, rated for up to double the power efficiency of its predecessor, and it's the drive we reach for when the M.2 slot sits behind a plastic back cover instead of under a desktop heatsink.

The numbers don't suffer for it. WD rates the 4TB model at 7,000/6,900 MB/s — a few percent off the Lexar on reads and slightly ahead on writes — with 2,400 TBW of endurance that's second only to the NM790 in this group. It also runs cool enough to skip a heatsink entirely, which is the entire point in a device you hold in your hands.

The catch is on paper rather than in the slot: a three-year warranty against five on most of the others, and a product page that now points at a newer generation. Neither changes how the drive behaves today, and in a handheld where the alternative is a bare Gen5 stick cooking itself, low heat is worth more than two extra years of coverage.

Every PCIe 5.0 drive here brings a cooling problem with it, and the T705 is the most honest about it: Crucial ships it with no heatsink and tells you to fit one. That isn't a criticism so much as a description of the category. A drive reading at 14,100 MB/s makes heat, and a bare M.2 stick sitting in still air has nowhere to put it.

Give it cooling and the performance is real. 14,100/12,600 MB/s leaves it a whisker behind the Samsung 9100 PRO for appreciably less money, and both are roughly double what the Gen4 drives here manage. Whether you feel that is a separate question: game loads and boots improve, but the step up from a good Gen4 drive is nothing like the step up from a hard drive.

So we recommend it to a specific buyer — someone with a Gen5 slot, a board heatsink or an aftermarket cooler, and a case with airflow — and we're blunter about everyone else. In a laptop, a console, or a small-form-factor build where the drive is sandwiched between the board and a panel, the Gen4 picks here are the better answer. If you're spending Gen5 money without a cooler in hand, order one in the same basket; a bare T705 under a long shader compile is slower than the drive you already own.

Set the SN5000 beside the drives above it on this page and it gives up a chunk of sequential speed: 5,500/5,000 MB/s against the seven thousand the front-runners manage. It also sits at the bottom of this group's price range, paired with the Silicon Power UD90, and it's the quicker of those two.

We think that's the right trade for most buyers. Sequential figures are box numbers; what you notice is whether an install crawls and whether the desktop feels sticky after a boot, and the SN5000 handles both without complaint. The listing is straightforward about the design too — 1,200 TBW of endurance, nCache 4.0 and no DRAM cache — and that is where the saving comes from.

The saving shows up in sustained writing. Push a few hundred gigabytes through it in one pass, the cache fills, and write speed falls away; that's the DRAM-less design doing what DRAM-less designs do. Photographers emptying card after card will feel it, a game library that grows a title at a time won't. Acronis True Image is a free download, so the migration is one less thing to sort out.

14,800 MB/s is the number Samsung puts on the 9100 PRO, and it's the highest on this page — a couple of hundred clear of the Crucial T705 and roughly double the best PCIe 4.0 drive here.

There's more to it than the headline. The 5nm controller is rated up to 49% more power-efficient than the 990 PRO's, and 2,200K/2,600K IOPS of random performance is what actually shortens a game load or a project open. In our hands it was responsive in the way a flagship should be: nothing ever waited on the disk.

Who needs it is the harder question. The gap between this and a good Gen4 drive is real on a stopwatch and modest from a chair — a game that loads in four seconds on the Lexar doesn't load in two here. Where the money does work is big sequential jobs: moving multi-gigabyte project folders, ingesting footage, shuttling model weights between drives.

We recommend it narrowly and without much hesitation for that buyer. For everyone else the warning is the one every Gen5 drive here earns: it can run hot under sustained load and it wants a real heatsink rather than a sticker. Order the cooler with the drive, not after the first temperature warning, and if your board's only M.2 slot lives under the graphics card, spend the money elsewhere.

Kingston's difficulty here isn't the drive. The NV3 is a perfectly good PCIe 4.0 SSD: 6,000 MB/s read, 5,000 MB/s write, Acronis cloning software included, and a mounting job simple enough to do without looking anything up. The trouble is that it lands in the same price band as the Lexar NM790, which beats it on speed, endurance and warranty, so we struggle to make a case for the Kingston at full freight.

Two hard limits sit outside price. The warranty runs three years rather than five, and the drive isn't a console option — it doesn't meet the PS5's requirements, which is worth knowing before you plan a living-room upgrade around it. In a desktop or a laptop with a Gen4 slot it does exactly what the box says: fast boots, quick installs, no fuss. That's a respectable thing for a drive to do, and it's the whole of what this one offers.

Nothing in this group costs less than the UD90, and nothing in it is slower. Both halves of that matter: at 5,000/4,500 MB/s it trails the WD Blue by 500 MB/s in each direction, and it trails the good Gen4 drives by a good deal more.

The gap is smaller in practice than it looks on paper. Loading a game leans on random reads and on the engine, not on sequential throughput; the difference between 5,000 and 7,400 MB/s shows up when you're copying large files and barely at all when you're playing one. What the UD90 does deliver is 4TB in a single slot, 1,200 TBW of endurance, end-to-end data protection and a five-year warranty.

Our reservation is that the drive offers nothing beyond the capacity, the endurance rating and the warranty. The NM790 adds roughly 2,400 MB/s and a heatsink for a little more money, and that's the comparison most buyers should make. Where the UD90 earns its place is a second M.2 slot used as a game library — a drive that mostly reads and rarely writes for long stretches, where peak write speed never comes up.