Best 4TB Hard Drives by Price per TB
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At 4TB, check the recording method before the price: pick a CMR drive for a NAS or RAID, because many 4TB desktop drives and plain WD Red are SMR, then compare price per TB in the ranking below.
ModusTech 4TB Desktop External Hard Drive (NOT-Portable) — Vault USB-C 3.1 (5Gbps) High-Speed HDD for PC, Mac, Laptop & Console, Mains-Powered Backup Storage, 2-Year Warranty
$131.76 · $32.94/TB as of Nov 15, 07:14 AM EST
Ranks #1 at $32.94/TB — 31% below the typical 4TB external HDD. New condition, USB, 2 yr warranty.
HGST Ultrastar 7K6000 4TB 7200 RPM SATA 128MB Cache 3.5" Internal Enterprise Hard Drive - HUS726040ALE610 (0F23005) (Renewed)
$139.99 · $35.00/TB as of Nov 15, 07:14 AM EST
Ranks #2 at $35.00/TB — 13% below the typical 4TB HDD. Renewed condition, SATA, 3.5".
HGST Ultrastar 7K6000 HUS726040ALE610 (0F23005) 4 TB 7200 RPM SATA 6Gb/s 3.5-Inch Internal Hard Drive (Renewed)
$139.99 · $35.00/TB as of Nov 15, 07:14 AM EST
Ranks #3 at $35.00/TB — 13% below the typical 4TB HDD. Renewed condition, SATA, 3.5".
Western Digital RE WD4000FYYZ 4TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5in Enterprise Internal Hard Drive - OEM (Renewed)
$146.99 · $36.75/TB as of Nov 15, 07:14 AM EST
Ranks #4 at $36.75/TB — 8% below the typical 4TB HDD. Renewed condition, SATA, 3.5".
Seagate 4TB Enterprise Capacity HDD 7200RPM SATA 6Gbps 128 MB Cache Internal Bare Drive (ST4000NM0033) (Renewed)
$150.00 · $37.50/TB as of Nov 15, 07:14 AM EST
Ranks #5 at $37.50/TB — 6% below the typical 4TB HDD. Renewed condition, SATA.
Seagate Skyhawk 4TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 64MB Cache for DVR NVR Security Camera System with Drive Health Management and in-House Rescue Services (ST4000VXZ16/016)
$159.99 · $40.00/TB as of Nov 15, 07:14 AM EST
Ranks #6 at $40.00/TB — 24% below the typical 4TB HDD. New condition, SATA, 3.5".
Hitachi 2022 HGST WD Ultrastar HUS726T4TALE6L4 4TB 7200 RPM 512e SATA 6Gb/s 3.5-inch Internal Hard Disk Drive (Renewed)
$159.99 · $40.00/TB as of Nov 15, 07:14 AM EST
Ranks #7 at $40.00/TB. Renewed condition, SATA, 3.5".
Seagate Exos 7E8 4TB 512n SATA 128MB Cache 3.5-Inch Enterprise Hard Drive (ST4000NM0035) (Renewed)
$159.99 · $40.00/TB as of Nov 15, 07:14 AM EST
Ranks #8 at $40.00/TB. Renewed condition, SATA, 3.5".
MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS)
$159.99 · $40.00/TB as of Nov 15, 07:14 AM EST
Ranks #9 at $40.00/TB — 24% below the typical 4TB HDD. New condition, SATA, 3.5".
Seagate Enterprise Capacity 3.5 | ST4000NM0035 | 4TB 7.2K RPM 128MB Cache 3.5in SATA 6Gb/s | 512n | FIPS 140-2 | Enterprise Internal Hard Disk Drive (Renewed)
$159.99 · $40.00/TB as of Nov 15, 07:14 AM EST
Ranks #10 at $40.00/TB. Renewed condition, SATA, 3.5".
How the ranking and deal scores work
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A 4TB hard drive is the entry point for bulk storage: a second drive in a desktop PC, a first two-bay NAS, a backup drive, or extra storage for a PS5 or Xbox. The list above ranks today's Amazon offers for exactly 4TB — internal and external, new, renewed, and used — by price per TB, and re-ranks itself every time our price snapshot refreshes.
4TB is also where SMR turns up most. Seagate's and Toshiba's desktop drives are SMR at this size, WD sells its 4TB desktop drive in both a CMR and an SMR version, and plain WD Red is SMR. The lowest price per TB can belong to a drive that slows sharply during a RAID rebuild, so the recording method matters more here than at any larger size.
What to look for
Read the recording method on every listing. At 4TB, Seagate's BarraCuda desktop line and Toshiba's P300 are SMR, and so is plain WD Red, even though it is sold for NAS use. WD Blue comes in both a CMR and an SMR version at this size, so check the maker's spec sheet for the exact model. SMR writes large files fine as a single backup drive; in a RAID array, a rebuild's sustained random writes can slow it sharply.
For a NAS, choose a line that is CMR at 4TB. WD Red Plus and Red Pro, Seagate IronWolf, IronWolf Pro, SkyHawk, and Exos, and Toshiba N300 and X300 are all CMR at this size. NAS-class drives carry a 3-year warranty and a 180 TB-per-year workload rating; pro NAS and enterprise drives get 5 years, desktop drives 2. Renewed 4TB offers are often older enterprise drives, with a seller warranty that is usually shorter than the maker's.
Expect small speed differences at 4TB. Datasheet sustained rates run from about 180 MB/s on a 5400 RPM NAS drive to about 195 MB/s on a 7200 RPM one, with Seagate's desktop drive near 190 MB/s. Filling the whole drive at roughly 185 MB/s takes about six hours. Windows shows a 4TB drive as about 3.64 TB because it counts in binary units; nothing is missing.
Found a price somewhere else? Check it with the price per TB calculator →
FAQ
Is 4TB overkill?
Not for most buyers: 4TB is a common size for a PC's second drive or a console's extra storage. It holds about 800 movies at 5 GB each in 1080p, or about 80 at 50 GB each as 4K disc rips.
How long does a 4TB hard drive last?
There is no fixed lifespan; the only hard numbers are warranties: 2 years for desktop-class, 3 for NAS-class, and 5 for pro NAS and enterprise drives. Backblaze's fleet data shows failure rates vary more by model than by capacity, so two drives of the same size can age very differently.
What is the cheapest 4TB hard drive?
It changes daily, so this page ranks today's Amazon offers live by price per TB. Before buying the top row, check whether it is SMR, which is common at 4TB, and whether it is renewed with a shorter seller warranty. Makers don't publish the recording method of the drive inside a portable external.
Is a 4TB hard drive good for a NAS?
Yes, if it is CMR. At 4TB, Seagate's and Toshiba's desktop drives, one WD Blue version, and plain WD Red are SMR, and an SMR drive can slow sharply during a RAID rebuild. NAS-class lines such as WD Red Plus, IronWolf, and N300 are CMR at this size.