Best 4TB NVMe SSDs of 2026

The SN7100 is built for the machine you carry. SanDisk designed it around laptops and handheld gaming devices, and the spec that matters for those isn't the 7,000 MB/s read rating — it's power. This generation delivers up to twice the power efficiency of the one before it, which in a small chassis is the difference between a handheld that holds its clocks and one that throttles while the drive warms the shell around it.

Endurance is the other reason it earns a slot. The 4TB version is rated at 2,400TBW, second only to the Lexar NM790's 3,000TBW in this group and far above what the budget drives carry. If the drive is going to spend its life recording, capturing, or streaming, that headroom buys more peace of mind than another few hundred MB/s ever will.

Cooling is a quiet advantage too: it runs cool enough without a heatsink that a board cover is optional, which is what you want in a chassis with no room for one. Reliability is the one place it gives ground to the Samsung, and the failures worth guarding against are early ones rather than a slow decline years in. So do the boring thing — install it, confirm the BIOS sees it, push a large write through it, and move your data across afterward rather than before.

A Gen5 drive that undercuts several Gen4 drives in the same group is worth checking twice. The T705 is rated to 14,100 MB/s read and 12,600 MB/s write, it's built on Micron TLC NAND rather than the QLC memory some high-capacity drives fall back on, and it costs less than the Samsung 9100 PRO while giving up only a few hundred MB/s on paper.

The catch is that you have to be on Gen5 to collect any of it. This drive is meant for a Gen5 M.2 slot on a recent Intel or Ryzen board, and in a Gen4 slot it falls back to Gen4 speed — at which point a cheaper Gen4 drive would have done the same job for less. Check which slot is wired to the processor rather than to the chipset; on most boards only one is.

Cooling is the other half of the deal. This variant arrives bare, so budget for a heatsink — your board's cover at minimum, ideally something with fins — and give it airflow, because a Gen5 controller under a sustained write is a small space heater. Do that and it earns its place as the drive for someone who already has the slot, moves enormous files, and would rather not pay flagship money for the privilege.

14,800 MB/s is the headline, and it's worth being honest about what it changes. Game loads were already instant. What gets faster is the unglamorous work — moving a project folder measured in hundreds of gigabytes, ingesting camera cards, rebuilding a scratch disk. If that's your week, this drive compresses it in a way a Gen4 drive can't.

The rest of the specification supports the claim: 2,200K/2,600K IOPS random, a 4GB cache, and a 5nm controller that Samsung says delivers up to 49% better power efficiency than the 990 PRO. That efficiency matters more than it sounds — a Gen5 drive in a laptop is a heat source with a job, and a cooler-running controller is what keeps it from throttling halfway through an export.

Heat still needs planning. Gen5 controllers run warm, and while this one is efficient for its class, it wants a heatsink; a board cover is usually enough in a desktop, and thin laptops are where the fit gets awkward. In a PlayStation 5 it needs an added heatsink, since this variant doesn't ship with one.

Our honest summary is that this is a workstation drive for workstation file sizes. For gaming, general use, and most content work the 990 EVO Plus gives you the same feel for a lot less, which is why this one isn't the default despite being the quickest thing in the roundup. Buy it when the files are genuinely large and the minutes genuinely compound.

Console expansion is where most people first meet the heatsink problem: the PS5 wants one, the drive usually doesn't come with one, and then you're matching third-party fins to a bay with a fixed amount of room. The NM790 removes that step entirely because the heatsink is part of the drive, and that's the reason it's our pick for anyone putting 4TB into a console.

The numbers behind it hold up. It's rated for 7,400 MB/s read and 6,500 MB/s write over Gen4, with 3,000TBW of endurance — the highest rating in this group — and a single-sided layout that keeps it slim. Lexar gets the power figure down by having the drive borrow the host's memory instead of carrying its own DRAM cache, which is how it draws up to 40% less than a DRAM-equipped Gen4 drive of the same class. In a handheld or a compact build, that's battery and temperature you get to keep.

It isn't the value pick, and we don't pretend otherwise: the price sits near the top of this group, above drives that feel just as quick in everyday use, and what you're paying for is the fitted cooler and that endurance rating. In a desktop with a board cover already, that's money you don't need to spend. In a console, a handheld, or a small-form-factor build with no room for a cooler, it's the difference between finishing the job and ordering more parts.

The cheapest drives in any 4TB roundup are usually the ones with a catch — QLC memory, a no-name controller, a warranty that runs out before the drive does. The SN5100 is the exception to that pattern: it sits near the bottom of this group on price and still manages up to 6,900 MB/s reads with a five-year limited warranty attached.

For a second drive, a game library, or a laptop that just needs more room, that's the right call and it's the one we make most often. The read rating is a step below the SN7100's 7,000 MB/s on paper, and the difference in daily use is not something you'll notice. What you should know is that SanDisk doesn't publish a write speed or an endurance figure for this capacity — so if your workload is sustained large writes rather than reads, the SN7100's rated 2,400TBW is the safer bet and worth the step up.

Installation is the usual M.2 routine: one screw, no cables, and it shows up in the BIOS on the first boot. Cloning is the only fiddly part, and doing it from a USB enclosure rather than trying to juggle two boot drives is the version that doesn't cost you an evening. For a drive at this price, that's about all the friction there is.

Four terabytes for the least money in this group, and the reason sits in the memory: this is a QLC drive where most of the others use TLC. QLC packs more bits into every cell, which is exactly how you get this much capacity at this price — and exactly why it isn't the drive for someone whose day is one big write after another. A game library or a media archive will never notice. A scratch disk will notice constantly.

The rest of the specification is more than adequate: 7,000 MB/s read and 5,900 MB/s write over Gen4, a graphene heat-dissipation label rather than a metal heatsink, SMART monitoring software, and a five-year warranty. We think the label is the interesting choice. It spreads heat without adding height, which keeps the drive viable in a laptop or under a low board cover where a slab of aluminum simply wouldn't fit.

Where it gives ground is in the details. SanDisk and Samsung can tell you what their 4TB drives are rated to write before they wear out; this listing doesn't. For a games drive that figure would never come up, and the price advantage is real and immediate. Just go in knowing you're buying on capacity per dollar rather than on a documented long game, and keep a backup of anything you can't re-download.

The FN960 is here for one reason: it's the least expensive drive in this group that shows up with a heatsink already fitted. Expanding a PS5, or building in a case with no board cover, normally means buying a cooler separately and hoping it clears — this skips both steps. That's a narrow pitch, but it's one several buyers need answered.

The cooler itself is more serious than the price suggests — an aluminum alloy block over a high-conductivity thermal pad rather than a sticker — and Fikwot covers the drive with a five-year limited warranty, matching what the Samsung and SanDisk picks offer. There's nothing to configure: it's an M.2 stick that appears as a drive.

Where it lands is a straightforward value call. It's a Gen4 drive with a dynamic SLC cache, which means fast bursts and slower sustained writes once that cache runs dry, and the read rating sits well below everything else here. For a game library, a console, or a media drive that mostly reads, none of that shows up in daily use — you'll get the same instant-feeling load times, just with less headroom for heavy writing.

Our take is that you buy this on fit and price, not on numbers. If your board has a cover and the budget stretches to the WD Blue SN5100, that's the better drive for the same kind of money. If a fitted heatsink is the specific thing standing between you and more storage, this handles it without another shopping trip.