HDD Prices per TB
Capacity

3TB Hard Drives: Cheapest by Price per TB

3 TB hard drives sit between the common 2 TB and 4 TB sizes. They are mostly older internal desktop and 2.5-inch or desktop external models. This page ranks the 3TB hard drives we track by price per TB so you can see whether a 3 TB hard disk still beats stepping up to 4 TB.

  • 41listings
  • $16/TBcheapest
  • $40/TBmedian
  • 7,200 RPMfastest spin

Best value picks

Cheapest per TB among named brands. Prices as of 2026-10-28; check Amazon for the current price.

  1. 1
    $15.74/TBHP 3 TB 3.5-Inch Internal Hard Drive 652766-B21
    3 TB$47.233.5"
    View on Amazon
  2. 2
    $20.51/TBSeagate Constellation 3TB ES.2 ST33000650SS 3.5in Enterprise SAS Hard Drive (Renewed)
    3 TB$61.54SAS3.5"
    View on Amazon
  3. 3
    $26.33/TBWD Re WD3001FYYG 3TB 7.2K RPM SAS 6 Gb/s 32MB Cache 3.5 inches Internal Hard Drive...
    3 TB$79.00SAS3.5"
    View on Amazon

Find your HDD

41 listings
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$/TBPriceCapacityPack FormForm factorInterfaceSpin speedFeatures ConditionBrandProductDeal
15.74$47.233 TB1Internal 3.5"3.5"——NewHPHP 3 TB 3.5-Inch Internal Hard Drive 652766-B21View deal
20.51$61.543 TB1Internal 3.5"3.5"SAS—EnterpriseRenewedSeagateSeagate Constellation 3TB ES.2 ST33000650SS 3.5in Enterprise SAS Hard Drive (Renewed)View deal
26.33$79.003 TB1Internal 3.5"3.5"SAS7,200 RPMRenewedWestern DigitalWD Re WD3001FYYG 3TB 7.2K RPM SAS 6 Gb/s 32MB Cache 3.5 inches Internal Hard Drive (Renewed)View deal
29.58$88.743 TB1Internal 3.5"3.5"SATA7,200 RPMEnterpriseRenewedHitachiHITACHI Ultrastar 7K3000 HUA723030ALA640 3TB 7200 RPM 64MB Cache SATA III 6.0Gb/s 3.5in Enterprise Hard Drive (Renewed)View deal
30.00$89.993 TB1Internal 3.5"3.5"SATA7,200 RPMNAS Surveillance EnterpriseRenewedHitachiHitachi Ultrastar 7K3000 3TB 64MB Cache 7200RPM SATA 3.0Gb/s 3.5in Heaty-Duty Internal Hard Drive for Surveillance System, RAID, NAS, PC/MAC (Renewed)View deal
30.00$89.993 TB1Desktop external—USB 3.x—NewOtherGX200 3TB USB 3.2 USB-C External Hard Drive for Desktop PC/Laptop (Windows or MacOS)View deal
31.66$94.993 TB1Internal HDD—SATA7,200 RPMRenewedSeagateSeagate Barracuda 3TB 7200rpm SATA III Internal Hard Drive (ST3000DM001) (Renewed)View deal
32.66$97.993 TB1Internal 3.5"3.5"SATA7,200 RPMEnterpriseRenewedWestern DigitalWestern Digital RE WD3000FYYZ 3TB 7.2K RPM 64MB Cache 6Gb/s SATA 3.5" Enterprise HDD (Renewed)View deal
33.32$99.953 TB1Internal 3.5"3.5"SATA—SurveillanceRenewedMDDMDD 2022 MAXDIGITALDATA MaxDigitalData 3TB 32MB Cache 5700PM SATA 6.0Gb/s 3.5-inch Internal Surveillance CCTV DVR Hard Drive (MD3000GSA3257DVR) - 2 Year Warranty (Renewed)View deal
33.33$99.993 TB1Internal 3.5"3.5"SATA7,200 RPMNAS Surveillance EnterpriseRenewedHGSTHGST Ultrastar 3TB 64MB Cache 7200RPM SATA III 6.0Gb/s 3.5in (Heaty-Duty, 24/7) Internal Hard Drive for CCTV DVR, NAS, PC/MAC (Renewed)View deal
33.33$99.993 TB1Internal 3.5"3.5"SATA7,200 RPMNAS Surveillance EnterpriseRenewedHGSTHGST Ultrastar 7K4000 (0F17731) 3TB 64MB Cache 7200RPM SATA III 6.0Gb/s 3.5in Heaty-Duty Internal Hard Drive for CCTV DVR, NAS, PC/MAC (Renewed)View deal
33.33$99.993 TB1Internal 3.5"3.5"SATA7,200 RPMNAS Surveillance EnterpriseRenewedHitachiHitachi Ultrastar 7K3000 (0F12471) 3TB 64MB Cache 7200RPM SATA III (6.0Gb/s) 3.5in Hard Drive - PC/Mac, ,RAID, NAS, CCTV DVR (Renewed)View deal
33.33$99.993 TB1Internal 3.5"3.5"SATA7,200 RPMEnterpriseRenewedMaxDigitalMaxDigital 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s (Enterprise Storage) 3.5" Internal Hard Drive w/2 Year Warranty (Renewed)View deal
33.33$100.003 TB1Internal 3.5"3.5"SATA7,200 RPMNAS Surveillance EnterpriseRenewedHGSTHGST Ultrastar 3TB 7200 RPM 64MB Cache SATA III 6.0Gb/s 3.5in Internal Hard Drive for NAS, RAID, Surveillance Storage -HUA723030ALA640 (Renewed) w/3 Year WarrantyView deal
35.00$105.003 TB1Desktop external—USB 3.x—NewOther3TB 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 WarrantyView deal
36.65$109.953 TB1Internal 3.5"—SATA—SurveillanceRenewedMDDMDD MAXDIGITALDATA 3TB 32MB Cache 5700PM SATA 6.0Gb/s 3.5'' Internal Surveillance CCTV DVR Hard Drive (MD3000GSA3257DVR) (Renewed)View deal
36.66$109.993 TB1Internal 3.5"3.5"SATA7,200 RPMEnterpriseRenewedMaxDigitalMaxDigital 3TB 7200RPM 64MB Cache SATA 6.0Gb/s (Enterprise Storage) 3.5inch Internal Hard Drive (Renewed)View deal
36.67$110.003 TB1Desktop external—USB 3.x—NewOther3TB 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 WarrantyView deal
39.98$119.953 TB1Internal 3.5"3.5"SATA7,200 RPMNAS SurveillanceNewOtherWL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year WarrantyView deal
40.00$119.993 TB1Internal 3.5"3.5"SATA7,200 RPMEnterpriseRenewedHitachiHITACHI Ultrastar 7K3000 HUA723030ALA640 3TB 64MB Cache 7200RPM SATA 6.0Gb/s 3.5in Enterprise Internal Hard Drive - 3 Year Warranty (Renewed)View deal
40.00$120.003 TB1Internal 3.5"3.5"SATA—NewWestern DigitalWestern Digital 3TB 64MB Cache SATA 3.0Gb/s Internal Hard Drive, 3.5"View deal
40.00$120.003 TB1Internal 3.5"3.5"SATA5,400 RPMSurveillanceRenewedWestern DigitalWestern Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version] (Renewed)View deal
40.00$119.993 TB1External HDD—USB 3.x—RenewedAvolusionAvolusion T8 Series 3TB USB 3.0 External Gaming Hard Drive for PS5 Game Console (Black) - 2 Year Warranty (Renewed)View deal
41.66$124.993 TB1Internal 3.5"———NewSeagateSeagate Barracuda ST3000DM001 3 TB 3.5 Internal Hard Drive - BulkView deal
43.33$129.993 TB1External HDD—USB 3.x—RenewedAvolusionAvolusion HDDGear Pro X 3TB USB 3.0 External Gaming Hard Drive (Pre-formatted for Xbox One X, S, Original) (Renewed)View deal
43.33$129.993 TB1Desktop external—USB 3.2 Gen 27,200 RPMNewAvolusionAvolusion PRO-H1 Series 3TB 7200RPM USB 3.2 Gen2 (10Gbps) External Hard Drive (for Windows or MacOS Desktop PC/Laptop)View deal
43.33$129.993 TB1Desktop external—USB 3.x—RenewedAvolusionAvolusion PRO-T5 3TB USB 3.0 External Hard Drive for Windows OS Desktop PC/Laptop (White) - 2 Year Warranty (Renewed)View deal
43.33$129.993 TB1Desktop external—USB 3.2 Gen 27,200 RPMRenewedAvolusionAvolusion PRO-H1 3TB 7200RPM USB 3.2 Gen2 (10Gbps) External Hard Drive (for Windows or MacOS Desktop PC/Laptop) (Renewed)View deal
46.66$139.993 TB1Internal 3.5"3.5"SATA—NewHiseeuHiseeu 3TB Internal Hard Drive HDD SATA 6Gb/s 64MB Cache 3.5 InchView deal
49.06$147.183 TB1Internal HDD—SATA—SurveillanceNewSeagateSeagate Skyhawk Surveillance HDD ST3000VX015 - Hard Drive - 3 TB - SATA 6GbView deal
49.67$149.003 TB1Internal 3.5"3.5"SATA7,200 RPMEnterpriseNewWestern DigitalWestern digital RE 3 TB Enterprise Hard Drive: 3.5 Inch, 7200 RPM, SATA III, 64 MB Cache - WD3000FYYZ (Old Model) Bullet - 5 years warranty from sellerView deal
50.00$150.003 TB1Internal 3.5"3.5"SATA—EnterpriseNewSeagateSeagate 3TB Enterprise Capacity HDD SATA 6Gb/s 128MB Cache 3.5-Inch Internal Bare Drive (ST3000NM0033)View deal
53.33$159.993 TB1External HDD—USB 3.x—NewAvolusionAvolusion PRO-Z Series 3TB USB 3.0 External Gaming Hard Drive for PS5 Game Console (White) - 2 Year WarrantyView deal
54.64$163.923 TB1Internal 3.5"3.5"SATA7,200 RPMEnterpriseNewHitachiHitachi Ultrastar 3.5-Inch 3 TB 7200RPM SATA III 6Gbps 64 MB Cache Enterprise Hard Drive with 24x7 Duty Cycle 0F12456View deal
55.00$165.003 TB1Internal 3.5"3.5"SATA7,200 RPMRenewedSeagateSEAGATE ST3000DM001 Barracuda 3TB 7200 RPM 64MB cache SATA 6.0Gb/s 3.5in internal hard drive (Bare Drive) Bare Drive (Renewed)View deal
55.00$165.003 TB1Internal HDD—SATA—SurveillanceNewSeagateSeagate Skyhawk Surveillance ST3000VX009 3TB SATA 6.0 Gb/s 256MB Hard DriveView deal
56.65$169.953 TB1Internal 3.5"3.5"SATA7,200 RPMNewHGSTHGST Deskstar 3TB 3.5-Inch 7200RPM SATA III 6Gbps 64 MB Cache Internal Hard Drive (0F12450)View deal
60.00$179.993 TB1Internal HDD———SurveillanceNewOther16 Channel 5MP Hybrid Security DVR Recorder ONVIF Compatible 3TB HDDView deal
66.67$200.003 TB1Internal 3.5"3.5"SATA—SurveillanceRenewedWestern DigitalWestern Digital 3TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD30PURZ (Renewed)View deal
66.80$200.393 TB1Internal 3.5"3.5"SATA7,200 RPMNewSeagateSeagate BarraCuda 3TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 7200 RPM 64MB Cache for Computer Desktop PC (ST3000DM008)View deal
116.48$349.453 TB1Internal 3.5"3.5"SAS7,200 RPMEnterpriseNewWestern DigitalWestern Digital Re WD3001FYYG 3TB 7200 RPM SAS 6Gb/s 32MB Cache 3.5 Inch Datacenter Capacity Enterprise Hard DriveView deal

Price charts

Value map: capacity against price

$0$20$40$60$80$10023344Bigger & cheaper than mostCapacity (TB)Price per TB

Each dot is one listing; 1 priced above $100/TB are off the chart. Among drives at or above the median capacity (3 TB), the cheapest is HP 3 TB 3.5-Inch Internal Hard Drive 652766-B21 at $16/TB.

How prices are spread

0510Median $40$30$40$50$60Price per TBListings

Half of the 41 listings cost between $33 and $50 per TB; the median is $40. A listing in the left-hand bars is cheap for this category.

Price per TB by interface

$0$50$100SATAUSB 3.x

SATA has the lowest median ($40/TB) and SATA the highest ($40/TB). Interfaces with fewer than 5 listings are left out.

How to choose 3 TB hard drives

What to look for

  • Price per TB: compare with the 4 TB median of $50 per TB. A larger drive is often cheaper per TB.
  • Recording method: confirm CMR or SMR if the drive is for a NAS or RAID.
  • Condition: many 3 TB listings are renewed or used. Read the warranty line.
  • Interface: internal 3.5-inch drives use SATA; external ones use USB.

Best for

Replacing a failed 3 TB drive in a NAS or PC, or a modest media or backup drive.

Skip it if

You are buying new for the first time and can step up to 4 TB or more for a similar price per TB.

3 TB price snapshot

Most listed brands

BrandListingsCheapestMedian
Seagate8$21$50
Western Digital7$26$40
Avolusion6$40$43
Hitachi5$30$33
HGST4$33$33

Quick facts

  • Middle 80% of prices: $30 to $57 per TB
  • Typical listing: 3 TB for $120
  • 9 brands with listings here
  • Median stated spin speed: 7,200 RPM (22 listings state one)
  • 15% are sold as NAS drives

How 3 TB compares

CategoryListingsCheapestMedianvs 3 TB
3 TB (this page)41$16$40—
2 TB171$25$72+80%
4 TB164$20$50+24%
1 TB155$16$74+86%
Internal827$16$48+19%
External425$21$58+45%
All HDDs1,252$16$50+25%

Median price per TB across current listings. "vs" shows each row's median against 3 TB.

Frequently asked questions

Is a 3TB hard drive still worth buying?

It can be if the price per TB is competitive. Compare the median of $40 per TB here with $50 for 4 TB before you decide.

Is a 3TB hard disk the same as a 3TB hard drive?

Yes. Hard disk, hard drive and HDD all describe the same spinning-platter storage device.

How much do 3 TB hard drives cost per TB?

Across 41 listings, the middle 80% range from about $30 to $57 per TB, with a median of $40. That is 20% below the all-HDD median of $50 per TB. Prices change often, so check the current price on Amazon before you buy.

What is the cheapest of the 3 TB hard drives per TB right now?

At the last update it is HP 3 TB 3.5-Inch Internal Hard Drive 652766-B21, at $16 per TB. The cheapest listing is not always the best buy, so compare warranty, speed and reviews.

Prices and availability are as of 2026-10-28 and may change. Check the current price and specifications on Amazon before you buy. As an Amazon Associate we earn from qualifying purchases.