Samsung’s 4TB 990 PRO SSD is $300 below Amazon’s list price, with a cooling catch

Samsung’s 4TB 990 PRO is $799.99 at Amazon, putting a high-capacity PCIe 4.0 SSD $300 below the retailer’s displayed $1,099.99 list price. If your game library or creative projects are filling up an M.2 slot, this gives you a lot of room without having to buy two drives.

The offer covers the 4TB version without a pre-installed heatsink, model MZ-V9P4T0B/AM. When I checked the US listing, the new drive was in stock, sold and shipped by Amazon, with free standard delivery and no coupon or Prime membership required for that price.

There is useful context behind that $300 figure: it compares the offer with Amazon’s list price, not a verified recent selling price. TechRadar reported this 4TB model at $799.90 on Amazon on October 23, nine cents less than the current price. So I would treat this as an existing offer rather than a sudden price cut or a record low.

The retail box identifies the 4TB capacity. Image: Tom’s Hardware

The 4TB 990 PRO pairs fast storage with an M.2 form factor

Samsung rates the drive for sequential reads of up to 7,450MB/s and writes of up to 6,900MB/s. Those are manufacturer figures under test conditions, and real transfer speeds depend on your system and workload. It uses the M.2 2280 form factor and a PCIe 4.0 x4 NVMe connection.

The reviewed drive comes without a pre-installed heatsink. Image: Tom’s Hardware

Before ordering, I recommend checking that your motherboard or laptop has an available NVMe M.2 slot that accepts an 80mm drive. A PCIe 3.0 slot can limit its speed, while some laptops have only one SSD slot, which may make cloning or reinstalling your system part of the upgrade.

The 4TB model also has a dedicated DRAM cache. In its review of the 4TB drive, Tom’s Hardware praised the single-sided design and performance. If you mainly want inexpensive extra space for games, though, compare other 4TB drives too: the 990 PRO’s speed and brand can carry a premium that not every game or everyday task will make use of.

The back of Tom’s Hardware’s 4TB review unit. Image: Tom’s Hardware

PS5 buyers need to budget for cooling

This particular listing is the bare drive, not Samsung’s separate heatsink-equipped model. Sony requires an effective cooling structure, such as a compatible heatsink and heat-transfer sheet, for an SSD installed in a PS5. Check the size of the assembled drive against Sony’s clearance limits before you buy or install one.

Samsung’s datasheet lists a five-year limited warranty or 2,400TB written for the 4TB model, whichever comes first. Its Magician software can help you check drive health and firmware after installation.

For a large, fast PCIe 4.0 drive from Samsung, $799.99 is below the list price displayed by Amazon. It was also available for almost the same price in October, so check current alternatives and your cooling needs before deciding whether it is worth the outlay. We have also covered Samsung’s smaller 2TB 9100 PRO for buyers comparing PCIe 5.0 options.

Image credits: HotHardware; Tom’s Hardware. The photographs show the outlets’ 4TB review units and packaging.

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