Hard Drives (HDD)

Ranked by price per gigabyte

Updated daily · No paid placements

As of June 2026, the cheapest hard drives (hdd) on BuyPerUnit costs $0.0168/GB — a Western Digital WD Elements 16TB USB 3.0 Desktop External Hard Drive Black (16TB) available at Newegg for $268.94. BuyPerUnit tracks 953 hard drives (hdd) products across Amazon, Best Buy, and Newegg, updated daily. The average price is $0.0340/GB.
Ranked by:$/GB
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1

WD Elements 16TB USB 3.0 Desktop External Hard Drive Black

Western DigitalNeweggHDD51% below avg

Capacity

16TB

Price

$268.94

$/GB

$0.017

Check Price at Newegg
2

WD Elements 10TB USB 3.0 Desktop Hard Drive Black

Western DigitalNeweggHDD38% below avg

Capacity

10TB

Price

$209.51

$/GB

$0.021

Check Price at Newegg
3

OSENTRiX GX100 14TB USB 3.2 Gen 2 USB-C External Hard Drive with USB Hub for Windows or MacOS Desktop PC/Laptop - 2 Year Warranty

OSENTRiXAmazon2yrHDD33% below avg

Capacity

14 TB

Price

$319.99

$/GB

$0.023

Check Price at Amazon
4

Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR)

SeagateNeweggHDD90d low

Capacity

20TB

Price

$470.00

$/GB

$0.024

Check Price at Newegg
5

HGST HUS724030ALA640 (0F14689) 3TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5' Enterprisel Hard Drive Bare Drive

HGSTNeweggHDD30% below avg

Capacity

3TB

Price

$71.25

$/GB

$0.024

Check Price at Newegg
6

Avolusion PRO-H1 Series 14TB 7200RPM USB 3.2 Gen2 (10Gbps) External Hard Drive (for Windows or MacOS Desktop PC/Laptop)

AvolusionAmazon2yrHDD29% below avg

Capacity

14 TB

Price

$339.99

$/GB

$0.024

Check Price at Amazon
7

seagate archive hdd 8tb sata 6gbps 128mb cache sata hard drive (st8000as0002)

SeagateNeweggHDD28% below avg

Capacity

8TB

Price

$195.00

$/GB

$0.024

Check Price at Newegg
8

Lenovo 4 TB 3.5' Internal Hard Drive

LenovoNeweggHDD90d low

Capacity

4TB

Price

$99.00

$/GB

$0.025

Check Price at Newegg
9

Toshiba N300 NAS - Hard drive - 16 TB - internal - 3.5' - SATA 6Gb/s - 7200 rpm - buffer: 512 MB

ToshibaNeweggHDD23% below avg

Capacity

16TB

Price

$420.90

$/GB

$0.026

Check Price at Newegg
10

WD2003FYYS-18W0B0 - DELL WD2003FYYS-18W0B0 DELL 2TB 7.2K 3G LFF SATA HARD DRIVE

Western DigitalNeweggHDD22% below avg

Capacity

2TB

Price

$52.95

$/GB

$0.026

Check Price at Newegg
11

Seagate Expansion 22TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP22000400)

SeagateAmazon1yrHDD

Capacity

22 TB

Price

$629.99

$/GB

$0.029

Check Price at Amazon
12

Seagate Barracuda 24TB Internal Hard Drive, 7200 U/Min, 512MB Cache, SATA 6Gb/s, 3.5" (ST24000DM001)

SeagateAmazonHDD

Capacity

24 TB

Price

$689.95

$/GB

$0.029

Check Price at Amazon
13

WD Elements 20TB USB 3.0 Desktop External Hard Drive WDBWLG0200HBK-NESN Black

Western DigitalNeweggHDD90d low

Capacity

20TB

Price

$599.99

$/GB

$0.030

Check Price at Newegg
14

Novus 20TB External USB-C 7200RPM Rugged Hard Drive

NovusNeweggHDD

Capacity

20TB

Price

$619.00

$/GB

$0.031

Check Price at Newegg
15

Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400)

SeagateAmazon2yrHDD

Capacity

8 TB

Price

$249.00

$/GB

$0.031

Check Price at Amazon
16

Toshiba N300 16TB SATA III 3.5' Internal NAS Hard Drive #HDWG81GXZSTA

ToshibaNeweggHDD90d low

Capacity

16TB

Price

$498.99

$/GB

$0.031

Check Price at Newegg
17

Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black

SeagateBest Buy1yrHDD
4.4(119)

Capacity

16 TB

Price

$499.99

$/GB

$0.031

Check Price at Best Buy
18

Seagate BarraCuda ST24000DM001 24TB 7200 RPM SATA 6.0Gb/s 3.5' Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

24TB

Price

$749.99

$/GB

$0.031

Check Price at Newegg
19

Toshiba-IMSourcing MG04ACA 6 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 128 MB Buffer

ToshibaNeweggHDD

Capacity

6TB

Price

$188.00

$/GB

$0.031

Check Price at Newegg
20

Seagate BarraCuda Internal Hard Drive 8TB SATA 6Gb/s 256MB Cache 3.5-Inch (ST8000DM004),Mechanical Hard Disk

SeagateAmazon2yrHDD

Capacity

8 TB

Price

$251.75

$/GB

$0.031

Check Price at Amazon
21

MaxDigitalData 6TB 7200RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive for Surveillance (MD6000GSA12872DVR) - 3 Years Warranty

MDD MAXDIGITALDATAAmazon3yrHDD90d low

Capacity

6 TB

Price

$188.99

$/GB

$0.031

Check Price at Amazon
22

Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black

SeagateBest Buy1yrHDD
4.4(246)

Capacity

20 TB

Price

$629.99

$/GB

$0.032

Check Price at Best Buy
23

Hp 625140-001 3 Tb 3.5' Internal Hard Drive - 625030-001, 625031-B21, 652766-B21

HPNeweggHDD

Capacity

3TB

Price

$95.00

$/GB

$0.032

Check Price at Newegg
24

Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004)

SeagateAmazonHDD

Capacity

8 TB

Price

$257.95

$/GB

$0.032

Check Price at Amazon
25

HGST HDS724040ALE640 Deskstar 7K4000 HDS724040ALA640 4 TB Hard Drive - 3.5' Internal - SATA (SATA/600)

HGSTNeweggHDD

Capacity

4TB

Price

$129.10

$/GB

$0.032

Check Price at Newegg
26

MDD MAXDIGITALDATA MaxDigitalData 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5inch Internal Hard Drive for NAS Network Storage (MD8000GSA25672NAS)

MDD MAXDIGITALDATAAmazon3yr

Capacity

8 TB

Price

$258.99

$/GB

$0.032

Check Price at Amazon
27

Novus 16TB External USB-C 7200RPM Rugged Hard Drive

NovusNeweggHDD

Capacity

16TB

Price

$519.00

$/GB

$0.032

Check Price at Newegg
28

Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty

AvolusionAmazon2yrHDD

Capacity

4 TB

Price

$129.99

$/GB

$0.032

Check Price at Amazon
29

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)

MDD MAXDIGITALDATAAmazon3yrHDD90d low

Capacity

4 TB

Price

$129.99

$/GB

$0.032

Check Price at Amazon
30

WL 4TB 64MB Cache 5400RPM SATA III (6.0Gb/s) 3.5" Internal Surveillance DVR Hard Drive - w/ 1 Year Warranty

GoHardDriveAmazonHDD90d low

Capacity

4 TB

Price

$129.99

$/GB

$0.032

Check Price at Amazon
31

Seagate - Expansion Desktop 8TB HDD - Black

SeagateBest Buy1yrHDD
4.6(182)

Capacity

8 TB

Price

$259.99

$/GB

$0.032

Check Price at Best Buy
32

Seagate BarraCuda NE-ST8000DM004 8TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD90d low

Capacity

8TB

Price

$259.99

$/GB

$0.032

Check Price at Newegg
33

HGST - IMSOURCING 0F14688 4TB 7200RPM SATA 3.5IN

HGSTNeweggHDD

Capacity

4TB

Price

$130.71

$/GB

$0.033

Check Price at Newegg
34

WD - easystore 20TB External USB 3.0 Hard Drive - Black

Western DigitalBest Buy2yrHDD
4.6(285)

Capacity

20 TB

Price

$654.99

$/GB

$0.033

Check Price at Best Buy
35

Seagate Exos X18 ST18000NM000J 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive

SeagateNeweggHDD14% this week

Capacity

18TB

Price

$599.00

$/GB

$0.033

Check Price at Newegg
36

WL 3TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5" Desktop Hard Drive (For Server, RAID, NAS, DVR, Desktop PC) w/1 Year Warranty

NEW GAMES ORDERAmazonHDD90d low

Capacity

3 TB

Price

$99.99

$/GB

$0.033

Check Price at Amazon
37

Toshiba 24TB N300 Pro NAS Internal Hard Drive HDWG82EXZSTB

ToshibaNeweggHDD

Capacity

24TB

Price

$799.99

$/GB

$0.033

Check Price at Newegg
38

HGST HUS724030ALA640 - 3TB 3.5' SATA 7,200 RPM 6Gb/s Hard Drive

HGSTNeweggHDD

Capacity

3TB

Price

$100.00

$/GB

$0.033

Check Price at Newegg
39

HGST Ultrastar 7K3000 HUA723030ALA640 (0F12456) 3TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5' Enterprisel Hard Drive Bare Drive

HGSTNeweggHDD

Capacity

3TB

Price

$100.00

$/GB

$0.033

Check Price at Newegg
40

Toshiba Canvio Gaming - hard drive - 4 TB - USB 3.2 Gen 1

ToshibaNeweggHDD

Capacity

4TB

Price

$134.07

$/GB

$0.034

Check Price at Newegg
41

Toshiba X300 20TB PRO Performance Internal Hard Drive HDWR62AXZSTB

ToshibaNeweggHDD

Capacity

20TB

Price

$672.84

$/GB

$0.034

Check Price at Newegg
42

Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5' Internal Hard Drive - OEM

SeagateNeweggHDD

Capacity

16TB

Price

$539.99

$/GB

$0.034

Check Price at Newegg
43

Toshiba N300 Pro 12TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 Gb/s 7200 RPM 512 MB Cache - HDWG51CUZSVB

ToshibaNeweggHDD

Capacity

12TB

Price

$409.99

$/GB

$0.034

Check Price at Newegg
44

Dell-IMSourcing 55FX5 2 TB Hard Drive - 3.5' Internal - SATA

Dell-IMSourcingNeweggHDD

Capacity

2TB

Price

$68.99

$/GB

$0.034

Check Price at Newegg
45

WD 4TB My Passport Ultra Portable Storage External Hard Drive USB-C Gold WDBFTM0040BGD-CESN

Western DigitalNeweggHDD90d low

Capacity

4TB

Price

$138.99

$/GB

$0.035

Check Price at Newegg
46

SEAGATE BULK ST8000AS0003 8TB Exos 5E8 3.5 SATA 6Gb/s SP

SeagateNeweggHDD

Capacity

8TB

Price

$278.45

$/GB

$0.035

Check Price at Newegg
47

Seagate BarraCuda Pro Performance Internal Hard Drive SATA HDD 8TB 6GB/s 256MB Cache 3.5-Inch (ST8000DM0004) (ST8000DM004 )

SeagateNeweggHDD

Capacity

8TB

Price

$279.10

$/GB

$0.035

Check Price at Newegg
48

Seagate - Barracuda 8TB Internal Hard Drive for Desktops

SeagateBest Buy2yrHDD
4.6(424)
190 / 190MB/s

Capacity

8 TB

Price

$279.99

$/GB

$0.035

Check Price at Best Buy
49

4TB Toshiba P300 3.5 Inch Serial ATA III 5400RPM 6GB Internal Hard Drive

ToshibaNeweggHDD

Capacity

4TB

Price

$140.50

$/GB

$0.035

Check Price at Newegg
50

Seagate IronWolf Pro ST24000NT002 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive

SeagateNeweggHDD

Capacity

24TB

Price

$849.00

$/GB

$0.035

Check Price at Newegg
51

WD 12TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Auto Backup Software - WDBBGB0120HBK-NESN

Western DigitalAmazonHDD

Capacity

12 TB

Price

$424.99

$/GB

$0.035

Check Price at Amazon
52

Seagate SkyHawk AI ST24000VE002 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive

SeagateNeweggHDD

Capacity

24TB

Price

$859.99

$/GB

$0.036

Check Price at Newegg
53

Seagate - IronWolf Pro 24TB NAS Internal Hard Drive with Rescue Data Recovery Services

SeagateBest Buy5yrHDD
4.5(8)
285 / 285MB/s

Capacity

24 TB

Price

$859.99

$/GB

$0.036

Check Price at Best Buy
54

HDX Pro C 20TB USB-C Enterprise 7200RPM External Hard Drive

HDXNeweggHDD

Capacity

20TB

Price

$719.00

$/GB

$0.036

Check Price at Newegg
55

BUFFALO 5TB MiniStation HD-PGF Portable Hard Drive USB 3.2 Gen 1, Micro B Model HD-PGF5.0U3GB

BUFFALONeweggHDD

Capacity

5TB

Price

$179.99

$/GB

$0.036

Check Price at Newegg
56

Seagate IronWolf Pro ST20000NT001 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive

SeagateNeweggHDD

Capacity

20TB

Price

$719.99

$/GB

$0.036

Check Price at Newegg
57

HP 614827-001 3Tb 7200Rpm 3.5Inch 6G Sata Sc Lff Midline Hard Drive With Tray For Gen8 Servers Only

HPNeweggHDD

Capacity

3TB

Price

$108.19

$/GB

$0.036

Check Price at Newegg
58

Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray

SeagateBest Buy2yrHDD

Capacity

8 TB

Price

$289.99

$/GB

$0.036

Check Price at Best Buy
59

Seagate One Touch 8TB External Hard Drive Desktop HDD - USB-C compatible with most Windows and macOS, Rescue Recovery (STNB8000400)

SeagateNeweggHDD

Capacity

8TB

Price

$289.99

$/GB

$0.036

Check Price at Newegg
60

Seagate Skyhawk AI 16TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with Drive Health Management and in-House Rescue Services (ST16000VE004)

SeagateAmazon3yrHDD

Capacity

16 TB

Price

$579.99

$/GB

$0.036

Check Price at Amazon
61

Seagate One Touch 8TB External Hard Drive Desktop HDD - USB-C Compatible with Most Windows and macOS, Rescue Recovery (STNB8000400)

SeagateAmazon

Capacity

8 TB

Price

$289.99

$/GB

$0.036

Check Price at Amazon
62

Seagate IronWolf Pro ST32000NT000 32TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive

SeagateNeweggHDD

Capacity

32TB

Price

$1159.99

$/GB

$0.036

Check Price at Newegg
63

WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4)

Western DigitalNeweggHDD

Capacity

18TB

Price

$654.71

$/GB

$0.036

Check Price at Newegg
64

Seagate IronWolf Pro 28TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 512MB Cache for RAID Network Attached Storage, Rescue Services (ST28000NT000)

SeagateAmazon5yrHDD

Capacity

28 TB

Price

$1019.99

$/GB

$0.036

Check Price at Amazon
65

Seagate IronWolf Pro ST28000NT000 28TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive

SeagateNeweggHDD

Capacity

28TB

Price

$1019.99

$/GB

$0.036

Check Price at Newegg
66

WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty

white labelAmazonHDD90d low

Capacity

3 TB

Price

$109.99

$/GB

$0.037

Check Price at Amazon
67

Seagate IronWolf Pro 18TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST18000NE000

SeagateNeweggHDD

Capacity

18TB

Price

$659.97

$/GB

$0.037

Check Price at Newegg
68

HGST Ultrastar He8 HUH728060ALE600 (0F23269) 6TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5' Helium Platform Enterprise Hard Disk Drives

HGSTNeweggHDD

Capacity

6TB

Price

$222.00

$/GB

$0.037

Check Price at Newegg
69

Synology 20TB HAT3320 Plus Series SATA III 3.5' Internal NAS HDD ( HAT3320-20T)

SynologyNeweggHDD

Capacity

20TB

Price

$739.99

$/GB

$0.037

Check Price at Newegg
70

Seagate IronWolf Pro 14 TB NAS RAID Internal Hard Drive - 7,200 RPM SATA 6 Gb/s 3.5-inch (ST14000NE0008)

SeagateNeweggHDD

Capacity

14TB

Price

$520.00

$/GB

$0.037

Check Price at Newegg
71

Seagate Exos X16 ST14000NM003G 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives, 512E/4KN, SED Bare Drive

SeagateNeweggHDD

Capacity

14TB

Price

$520.10

$/GB

$0.037

Check Price at Newegg
72

Seagate Expansion 12TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP12000400)

SeagateAmazon1yrHDD

Capacity

12 TB

Price

$449.00

$/GB

$0.037

Check Price at Amazon
73

HDX Pro C 16TB USB-C Enterprise 7200RPM External Hard Drive

HDXNeweggHDD

Capacity

16TB

Price

$599.00

$/GB

$0.037

Check Price at Newegg
74

LaCie d2 Professional USB-C 20TB

LaCieNeweggHDD

Capacity

20TB

Price

$748.99

$/GB

$0.037

Check Price at Newegg
75

Seagate Exos X18 ST14000NM001J 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive, SED

SeagateNeweggHDD

Capacity

14TB

Price

$524.45

$/GB

$0.037

Check Price at Newegg
76

Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - OEM

SeagateNeweggHDD

Capacity

4TB

Price

$149.99

$/GB

$0.037

Check Price at Newegg
77

White Label WL 4TB 7200RPM 64MB Cache SATA 6.0Gb/s (Enterprise Grade) 3.5" Hard Drive (for Server, RAID, NAS, DVR, Desktop PC)

White LabelAmazon

Capacity

4 TB

Price

$149.99

$/GB

$0.037

Check Price at Amazon
78

Seagate IronWolf 8TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage – Frustration Free Packaging (ST8000VNZ04/N004)

SeagateAmazon3yrHDD

Capacity

8 TB

Price

$299.99

$/GB

$0.037

Check Price at Amazon
79

Seagate - IronWolf 8TB NAS Internal Hard Drive with Rescue Data Recovery Services

SeagateBest Buy3yrHDD
4.8(197)
210 / 210MB/s

Capacity

8 TB

Price

$299.99

$/GB

$0.037

Check Price at Best Buy
80

Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ

Western DigitalAmazon2yrHDD

Capacity

12 TB

Price

$449.99

$/GB

$0.037

Check Price at Amazon
81

Dell - 2 TB 7200 RPM Enterprise SATA 3.5' Hard Drive for PowerEdge / PowerVault Systems. Equipped with tray. Mfr P/N: 2G4HM

DellNeweggHDD

Capacity

2TB

Price

$75.00

$/GB

$0.037

Check Price at Newegg
82

Seagate IronWolf ST12000VN0008 12 TB Hard Drive - 3.5' Internal - SATA (SATA/600) (ST12000VN0008) - OEM Pack, International Version No Warranty

SeagateNeweggHDD

Capacity

12TB

Price

$450.00

$/GB

$0.037

Check Price at Newegg
83

HP 6 TB 3.5' Internal Hard Drive

HPNeweggHDD90d low

Capacity

6TB

Price

$225.10

$/GB

$0.038

Check Price at Newegg
84

Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (ST18000NM003D)

SeagateNeweggHDD

Capacity

18TB

Price

$677.00

$/GB

$0.038

Check Price at Newegg
85

WD My Book 12TB USB 3.2 Gen 1 External Hard Drive Black

Western DigitalNeweggHDD

Capacity

12TB

Price

$451.99

$/GB

$0.038

Check Price at Newegg
86

Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600

SeagateNeweggHDD

Capacity

18TB

Price

$681.10

$/GB

$0.038

Check Price at Newegg
87

Seagate Constellation 500 GB 7200RPM SATA 3Gb/s 32 MB Cache 2.5 Inch Internal Hard Drive - Bare Drive ST9500530NS

SeagateAmazon5yrHDD90d low

Capacity

500 GB

Price

$18.99

$/GB

$0.038

Check Price at Amazon
88

Seagate IronWolf ST10000VN000 10TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive

SeagateNeweggHDD

Capacity

10TB

Price

$379.99

$/GB

$0.038

Check Price at Newegg
89

Seagate Expansion 6TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP6000400)

SeagateAmazonHDD

Capacity

6 TB

Price

$228.00

$/GB

$0.038

Check Price at Amazon
90

Seagate IronWolf Pro 14TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5' Internal HDD ST14000NE0008

SeagateNeweggHDD

Capacity

14TB

Price

$535.00

$/GB

$0.038

Check Price at Newegg
91

Seagate IronWolf Pro ST12000NT001 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive

SeagateNeweggHDD

Capacity

12TB

Price

$459.99

$/GB

$0.038

Check Price at Newegg
92

Seagate Constellation ES ST33000650NS 3TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

3TB

Price

$115.00

$/GB

$0.038

Check Price at Newegg
93

WD Red Plus 12TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD120EFGX

Western DigitalNeweggHDD

Capacity

12TB

Price

$459.99

$/GB

$0.038

Check Price at Newegg
94

Seagate IronWolf Pro, 12 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST12000NT001)

SeagateBest Buy5yrHDD
1.0(1)
285 / 285MB/s

Capacity

12 TB

Price

$459.99

$/GB

$0.038

Check Price at Best Buy
95

Seagate SkyHawk AI ST10000VE001 10TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

10TB

Price

$383.76

$/GB

$0.038

Check Price at Newegg
96

WD Purple Pro 26TB 3.5' Surveillance Internal Hard Drive HDD - SATA 6 Gb/s - 512 MB Cache - WD260PURP

Western DigitalNeweggHDD

Capacity

26TB

Price

$1004.99

$/GB

$0.039

Check Price at Newegg
97

Seagate Desktop HDD ST3000DM001 3TB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

3TB

Price

$116.00

$/GB

$0.039

Check Price at Newegg
98

WD Red Plus 10TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD100EFGX

Western DigitalNeweggHDD90d low

Capacity

10TB

Price

$388.99

$/GB

$0.039

Check Price at Newegg
99

Western Digital 10TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 GB/s, CMR, 512 MB Cache, 3.5" - WD100EFGX

Western DigitalAmazon3yrHDD
260 / 260MB/s

Capacity

10 TB

Price

$388.99

$/GB

$0.039

Check Price at Amazon
100

seagate ironwolf pro st14000ne0008 14 tb hard drive - 3.5' internal - sata (sata/600)

SeagateNeweggHDD

Capacity

14TB

Price

$545.00

$/GB

$0.039

Check Price at Newegg
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Buy Cheap Hard Drives: Find the Best HDD Deals in 2026

Looking to buy cheap hard drives? You're in the right place. BuyPerUnit compares 953+ HDDs ranked by price per gigabyte — the only metric that truly shows you which drives offer the best value for your money.

Right now, the cheapest HDD storage starts at just $0.017/GB, while the average across all drives is $0.034/GB. Whether you need bulk storage for backups, a NAS, or a media server, we help you find the best deal. For faster storage, compare SSDs here.

HDD Buying Guide: Get the Best Value

1. Compare Price Per GB

A $150 4TB drive ($0.037/GB) beats a $70 1TB drive ($0.07/GB) in value. Always divide price by capacity to find the real cost — that's what we do for every listing.

2. Bigger = Cheaper Per GB

Storage follows economies of scale. 4TB+ drives almost always have the lowest price per gigabyte. Buy more capacity upfront to save long-term.

3. Match RPM to Your Use Case

7200 RPM drives are faster and better for desktop use or active NAS workloads. 5400 RPM drives run cooler and quieter — ideal for bulk archival or always-on backup drives where speed is less critical.

4. Watch for Sales

Hard drive prices fluctuate. We update prices daily so you can catch the best deals. Bookmark this page and check back regularly.

3.5" Desktop vs 2.5" Laptop HDD: Which Should You Buy?

TypeTypical $/GBMax CapacityBest For
3.5" Desktop HDD$0.015–0.02520TB+Desktop PC, NAS, media server
2.5" Laptop HDD$0.025–0.0455TBLaptop upgrade, portable use
External HDD$0.020–0.04020TB+Backup, portable storage, archiving

Frequently Asked Questions About Buying Hard Drives

What is the cheapest hard drive per GB right now?
The cheapest HDD storage per gigabyte is currently $0.0168/GB. Large capacity 3.5" desktop drives (6TB+) from Seagate or WD consistently offer the lowest price per gigabyte in the HDD category.
Is it better to buy one large hard drive or multiple smaller ones?
One large drive is almost always cheaper per GB. However, multiple drives provide redundancy — if one fails, you don't lose everything. For important data, consider buying two drives and keeping backups on both.
Should I buy 5400 RPM or 7200 RPM?
For desktop use or a NAS with active read/write workloads, 7200 RPM is noticeably faster and worth the small premium. For cold storage, archival backups, or always-on low-activity drives, 5400 RPM runs cooler, quieter, and uses less power.
When is the best time to buy cheap hard drives?
Black Friday, Cyber Monday, and Amazon Prime Day typically have the best deals. However, prices fluctuate year-round. We update our rankings daily so you can always find the current best value.
What brands make the most reliable hard drives?
Seagate, Western Digital (WD), and Toshiba are the three major HDD manufacturers. All produce reliable drives at different price points. Seagate Barracuda and WD Blue are popular desktop choices; WD Red and Seagate IronWolf are designed for NAS use.

How We Find the Cheapest Hard Drives

BuyPerUnit calculates the price per gigabyte for every hard drive by dividing the current price by the storage capacity. This gives you the true cost of storage, making it easy to compare drives of different sizes.

Products are ranked from best value (lowest $/GB) to worst. We update prices regularly from Amazon, Best Buy, and Newegg to ensure you always see current deals. Click any product to view the latest price and purchase directly.

BuyPerUnit is an affiliate site. We earn a commission when you purchase through our links at no extra cost to you.

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