Every 4TB SSD we track — NVMe, SATA and external — ranked by price per terabyte. 4TB is usually the best $/TB of any capacity, and the numbers below show why. 11 drives compared. Updated November 13, 2026.
Cheapest 4TB SSD: Silicon Power UD90 4TB — $118.74/TB ($474.97 total)
Why 4TB: the fixed cost of controller and board is spread over more NAND, so $/TB is typically the lowest of any single-drive capacity
The 8TB catch: jumping to 8TB usually costs more per TB, so two 4TB drives almost always beat one 8TB drive for the same total space — if you have two slots
Chosen on specifications — NAND type, DRAM cache, speed and warranty — not on commission. The button opens the current Amazon listing.
TLC NAND with a DRAM cache and a five-year warranty: stays fast when the drive is full and under long writes. The safe choice for a main drive.
View on AmazonTLC without DRAM (it borrows a little system RAM via HMB): close to flagship speed in everyday use and lower power draw. A sound pick for most gaming PCs and laptops.
View on AmazonQLC NAND, the entry tier. Fine as a games or secondary drive; it slows down on long sustained writes once its SLC cache fills.
View on AmazonPCIe 5.0 with a DRAM cache. Worth it for large file transfers and content creation; little difference in games and none on the PS5.
View on AmazonAmazon US prices as of November 13, 2026, 06:00 UTC; refreshed every day. $/TB is the listing price divided by raw capacity. Full methodology.
| $/TB | $/GB | Price | Capacity | Interface | Gen | Read | Write | NAND | Warranty | Cond. | Product |
|---|---|---|---|---|---|---|---|---|---|---|---|
| $118.74BEST | $0.119 | $474.97 | 4 TB | M.2 NVMe | Gen 4 | 5,000 MB/s | 4,500 MB/s | QLC | 5 yr | New | Silicon Power UD90 4TB· 3rd-partyAmazon ↗ |
| $170.00 | $0.170 | $679.99 | 4 TB | M.2 NVMe | Gen 4 | 7,250 MB/s | 6,300 MB/s | TLC | 5 yr | New | Samsung 990 EVO Plus 4TB· 3rd-partyAmazon ↗ |
| $186.25 | $0.186 | $744.99 | 4 TB | M.2 NVMe | Gen 5 | 14,900 MB/s | 13,800 MB/s | TLC | 5 yr | New | Crucial T710 4TB· 3rd-partyAmazon ↗ |
| $196.80 | $0.197 | $787.21 | 4 TB | M.2 NVMe | Gen 4 | 7,300 MB/s | 6,600 MB/s | TLC | 5 yr | New | WD Black SN850X 4TB· 3rd-partyAmazon ↗ |
| $200.00 | $0.200 | $799.99 | 4 TB | M.2 NVMe | Gen 4 | 7,450 MB/s | 6,900 MB/s | TLC | 5 yr | New | |
| $207.90 | $0.208 | $831.59 | 4 TB | 2.5 SATA | SATA | 560 MB/s | 520 MB/s | TLC | 5 yr | New | WD Blue SA510 4TB· 3rd-partyAmazon ↗ |
| $215.00 | $0.215 | $859.99 | 4 TB | M.2 NVMe | Gen 5 | 14,900 MB/s | 14,000 MB/s | TLC | 5 yr | New | WD Black SN8100 4TB· 3rd-partyAmazon ↗ |
| $217.25 | $0.217 | $869.00 | 4 TB | M.2 NVMe | Gen 4 | 7,400 MB/s | 7,000 MB/s | TLC | 5 yr | New | Crucial T500 4TB· 3rd-partyAmazon ↗ |
| $233.61 | $0.234 | $934.43 | 4 TB | External | USB | 2,000 MB/s | 2,000 MB/s | — | 5 yr | New | |
| $243.50 | $0.243 | $973.99 | 4 TB | 2.5 SATA | SATA | 560 MB/s | 530 MB/s | TLC | 5 yr | New | Samsung 870 Evo 4TB· 3rd-partyAmazon ↗ |
| $250.00 | $0.250 | $999.99 | 4 TB | M.2 NVMe | Gen 5 | 14,800 MB/s | 13,400 MB/s | TLC | 5 yr | New | Samsung 9100 Pro 4TB· 3rd-partyAmazon ↗ |
Every SSD carries fixed costs that don't scale with capacity: the controller, the circuit board, the enclosure, the packaging. Spread those over 500GB and they dominate the price; spread them over 4TB and they nearly vanish into the cost of the NAND itself. That's why $/TB falls steadily from 500GB up to 4TB — and why 4TB is where most buyers get the most storage for their money.
The trend usually reverses at 8TB, where the largest drives command a scarcity premium and $/TB climbs back up. So 4TB tends to be the true value peak: big enough to spread the fixed costs thin, not so big that you pay the flagship tax.
4TB NVMe is the mainstream choice — fast, internal, and where the cheapest $/TB usually lives. For a gaming rig, workstation or PS5, this is the sensible buy.
4TB SATA exists but is a narrower case: it only makes sense if you need a 2.5-inch drive for a bay or NAS, since it costs about the same per TB as NVMe while being far slower. See our SATA SSD page for when that trade-off is worth it.
4TB external adds a USB enclosure and its price premium; good for portable 4TB storage, but per-TB you pay for the convenience.
Two 2TB drives make sense only when you want the data split (say, OS on one, games on another) or already own one 2TB drive.
Going the other way, if you're eyeing 8TB, compare it against two 4TB drives first. 8TB single drives carry a capacity premium, so two 4TB drives almost always give you the same space for less — provided you have two slots. Our 8TB page runs that math in detail.
At 4TB you're storing a lot, so endurance and sustained write behavior matter more than on a small boot drive. Prefer TLC NAND with a DRAM cache for a primary drive; DRAM-less QLC is acceptable for a bulk game or media library where large sustained writes are rare. The table lists NAND type and warranty per drive.
Also confirm the form factor fits: nearly all 4TB NVMe drives are single-sided M.2 2280 now, but a few older or high-capacity models are double-sided, which can foul a laptop or a PS5 heatsink. Check clearance before buying.