Hard Drives (HDD)

Ranked by price per gigabyte

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Ranked by:$/GB
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901

Seagate Momentus Thin ST250LT012 250GB 5400 RPM 16MB Cache SATA 3.0Gb/s 2.5' Internal Notebook Hard Drive

SeagateNeweggHDD66% below avg

Capacity

250GB

Price

$59.00

$/GB

$0.236

Check Price at Newegg
902

IBM 00NA527 - IBM 2TB 2.5' Nearline SATA 7.2K 6Gb/s Hard Drive

IBMNeweggHDD65% below avg

Capacity

2TB

Price

$475.00

$/GB

$0.237

Check Price at Newegg
903

Seagate BarraCuda 7200.11 ST3160813AS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD90d low

Capacity

160GB

Price

$38.50

$/GB

$0.241

Check Price at Newegg
904

TOSHIBA MK2565GSX 250GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5' Internal Notebook Hard Drive Bare Drive

ToshibaNeweggHDD65% below avg

Capacity

250GB

Price

$60.19

$/GB

$0.241

Check Price at Newegg
905

Lenovo 1.20 TB 3.5' Internal Hard Drive

LenovoNeweggHDD65% below avg

Capacity

1.2TB

Price

$290.00

$/GB

$0.242

Check Price at Newegg
906

SANDISK 2TB Extreme Portable SSD (New Model) - up to 2000MB/s Transfer speeds - USB Type-C connectivity, Reliable Durability - Black - SDSSDE70-2T00-G25

SanDiskAmazonHDD64% below avg

Capacity

2 TB

Price

$489.99

$/GB

$0.245

Check Price at Amazon
907

Dell 1 TB 2.5' Internal Hard Drive - SATA

DellNeweggHDD64% below avg

Capacity

1TB

Price

$245.57

$/GB

$0.246

Check Price at Newegg
908

HGST Travelstar Z5K320 HTS543216A7A384 (0A78601) 160GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5' Internal Notebook Hard Drive Bare Drive

HGSTNeweggHDD64% below avg

Capacity

160GB

Price

$39.50

$/GB

$0.247

Check Price at Newegg
909

Seagate BarraCuda 7200.12 ST31000528AS 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD64% below avg

Capacity

1TB

Price

$248.10

$/GB

$0.248

Check Price at Newegg
910

TOSHIBA MK2552GSX(HDD2H02) 250GB 5400 RPM 8MB Cache SATA 1.5Gb/s 2.5' Notebook Hard Drive Bare Drive

ToshibaNeweggHDD64% below avg

Capacity

250GB

Price

$62.19

$/GB

$0.249

Check Price at Newegg
911

Seagate Exos X20z 20TB ST20000NM001J 7.2k 3.5' SATA 6Gb/s SMR Ent HDD - 20 Pack

SeagateNeweggHDD64% below avg

Capacity

20TB

Price

$4995.00

$/GB

$0.250

Check Price at Newegg
912

toshiba mk1652gsx 160gb 2.5-inch 5400rpm sata oem notebook hard drive

ToshibaNeweggHDD64% below avg

Capacity

160GB

Price

$39.99

$/GB

$0.250

Check Price at Newegg
913

WD Black 500GB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD5003AZEX

Western DigitalNeweggHDD63% below avg

Capacity

500GB

Price

$127.35

$/GB

$0.255

Check Price at Newegg
914

Hitachi GST 0Y30055 500GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5' Internal Notebook Hard Drive Bare Drive

HitachiNeweggHDD62% below avg

Capacity

500GB

Price

$129.65

$/GB

$0.259

Check Price at Newegg
915

Seagate BarraCuda 7200.10 ST3250310AS 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD62% below avg

Capacity

250GB

Price

$65.00

$/GB

$0.260

Check Price at Newegg
916

TOSHIBA MK2035GSS 200GB 4200 RPM 8MB Cache SATA 1.5Gb/s 2.5' Notebook Hard Drive Bare Drive

ToshibaNeweggHDD60% below avg

Capacity

200GB

Price

$55.19

$/GB

$0.276

Check Price at Newegg
917

HGST 0J43103 2.5In 7.0Mm 320Gb 7200Rpm Sata Ea Rv,Hgst,Hte725032A7E630

HGSTNeweggHDD59% below avg

Capacity

320GB

Price

$90.00

$/GB

$0.281

Check Price at Newegg
918

Hitachi GST Deskstar 7K1000.C HDS721032CLA362 (0A39264) 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5' Internal Hard Drive Bare Drive

HitachiNeweggHDD59% below avg

Capacity

320GB

Price

$90.19

$/GB

$0.282

Check Price at Newegg
919

Seagate BarraCuda 7200.9 ST3500641AS-RK 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Retail Kit

SeagateNeweggHDD59% below avg

Capacity

500GB

Price

$141.10

$/GB

$0.282

Check Price at Newegg
920

Dell 300 GB 2.5' Internal Hard Drive

DellNeweggHDD59% below avg

Capacity

300GB

Price

$85.00

$/GB

$0.283

Check Price at Newegg
921

Samsung T7 Shield 4TB Portable SSD - 1050MB/s, Rugged, Water & Dust Resistant, for Content Creators - Black

SamsungAmazon3yrHDD59% below avg

Capacity

4 TB

Price

$1134.15

$/GB

$0.284

Check Price at Amazon
922

Lenovo 1 TB Hard Drive 3.5' Internal SATA SATA/600 - Hot Swappable 4XB7A97045

LenovoNeweggHDD58% below avg

Capacity

1TB

Price

$287.99

$/GB

$0.288

Check Price at Newegg
923

TOSHIBA MK1652GSX(HDD2H03) 160GB 5400 RPM 8MB Cache SATA 1.5Gb/s 2.5' Internal Notebook Hard Drive Bare Drive

ToshibaNeweggHDD58% below avg

Capacity

160GB

Price

$46.12

$/GB

$0.288

Check Price at Newegg
924

iStorage diskAshur2 HDD 1TB Blue - Secure portable hard drive - Password protected, dust and water resistant, portable, military grade hardware...

iStorageNeweggHDD57% below avg

Capacity

1TB

Price

$294.95

$/GB

$0.295

Check Price at Newegg
925

iStorage diskAshur2 HDD 1TB Black - Secure portable hard drive - Password protected, dust and water resistant, portable, military grade hardware...

iStorageNeweggHDD57% below avg

Capacity

1TB

Price

$294.95

$/GB

$0.295

Check Price at Newegg
926

iStorage diskAshur2 HDD 1TB Red - Secure portable hard drive - Password protected, dust and water resistant, portable, military grade hardware...

iStorageNeweggHDD57% below avg

Capacity

1TB

Price

$294.95

$/GB

$0.295

Check Price at Newegg
927

iStorage diskAshur2 HDD 1TB Green - Secure portable hard drive - Password protected, dust and water resistant, portable, military grade hardware...

iStorageNeweggHDD57% below avg

Capacity

1TB

Price

$294.95

$/GB

$0.295

Check Price at Newegg
928

toshiba mk6461gsy new factory sealed. 640gb laptop internal sata hard drive fast 7 toshiba mk6461gsy flickr - photo sharing!

ToshibaNeweggHDD56% below avg

Capacity

640GB

Price

$192.03

$/GB

$0.300

Check Price at Newegg
929

TOSHIBA MKxx33GSG Series MK1633GSG 160GB 5400 RPM 16MB Cache SATA 3.0Gb/s 1.8' Internal Hard Drive Retail

ToshibaNeweggHDD56% below avg

Capacity

160GB

Price

$48.02

$/GB

$0.300

Check Price at Newegg
930

SAMSUNG Spinpoint M7 HM250HI 250GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5' Notebook Hard Drive Bare Drive

SamsungNeweggHDD56% below avg

Capacity

250GB

Price

$76.19

$/GB

$0.305

Check Price at Newegg
931

Dell 600 GB 3.5' Internal Hard Drive

DellNeweggHDD55% below avg

Capacity

600GB

Price

$185.00

$/GB

$0.308

Check Price at Newegg
932

Seagate SV35.3 ST3250310SV 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD53% below avg

Capacity

250GB

Price

$80.19

$/GB

$0.321

Check Price at Newegg
933

Lenovo 2TB 3.5' SATA 7200rpm Internal Hard Drive - Hot Swappable 7XB7A00050

LenovoNeweggHDD53% below avg

Capacity

2TB

Price

$645.10

$/GB

$0.323

Check Price at Newegg
934

HGST HTE723225A7A364 0J13212 Travelstar Z7K320 250Gb 7200RPM SATA 2.5' HardDrive

HGSTNeweggHDD51% below avg

Capacity

250GB

Price

$85.00

$/GB

$0.340

Check Price at Newegg
935

iStorage diskAshur PRO2 HDD 1TB Secure portable Hard Drive FIPS Level 3 certified - password protected, dust and water resistant, military grade...

iStorageNeweggHDD49% below avg

Capacity

1TB

Price

$349.95

$/GB

$0.350

Check Price at Newegg
936

APRICORN Aegis Padlock Fortress 500GB USB 3.0 FIPS 140-2 Encrypted External Hard Drive With PIN Access

APRICORNNeweggHDD49% below avg

Capacity

500GB

Price

$175.99

$/GB

$0.352

Check Price at Newegg
937

HGST Travelstar 0J26053 320 GB 2.5-inch Internal Hard Drive - SATA - 7200 - 32 MB Buffer

HGSTNeweggHDD45% below avg

Capacity

320GB

Price

$120.00

$/GB

$0.375

Check Price at Newegg
938

Seagate BarraCuda 7200.10 ST380815AS 80GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD90d low

Capacity

80GB

Price

$30.80

$/GB

$0.385

Check Price at Newegg
939

Seagate NL35 ST3250823NS 250GB 7200 RPM 8MB Cache SATA 1.5Gb/s 3.5' Hard Drive Bare Drive

SeagateNeweggHDD44% below avg

Capacity

250GB

Price

$97.00

$/GB

$0.388

Check Price at Newegg
940

Lenovo 4 TB Hard Drive 3.5' Internal SATA SATA/600 4XB7A77447

LenovoNeweggHDD43% below avg

Capacity

4TB

Price

$1562.18

$/GB

$0.391

Check Price at Newegg
941

Lenovo 500 GB External Hard Drive Cartridge

LenovoNeweggHDD42% below avg

Capacity

500GB

Price

$199.00

$/GB

$0.398

Check Price at Newegg
942

iStorage diskAshur2 HDD 500GB Green - Secure portable hard drive - Password protected, dust and water resistant, portable, military grade hardware...

iStorageNeweggHDD42% below avg

Capacity

500GB

Price

$199.95

$/GB

$0.400

Check Price at Newegg
943

iStorage diskAshur2 HDD 500GB Blue - Secure portable hard drive - Password protected, dust and water resistant, portable, military grade hardware...

iStorageNeweggHDD42% below avg

Capacity

500GB

Price

$199.95

$/GB

$0.400

Check Price at Newegg
944

iStorage diskAshur2 HDD 500GB Red - Secure portable hard drive - Password protected, dust and water resistant, portable, military grade hardware...

iStorageNeweggHDD42% below avg

Capacity

500GB

Price

$199.95

$/GB

$0.400

Check Price at Newegg
945

iStorage diskAshur2 HDD 500GB Black - Secure portable hard drive - Password protected, dust and water resistant, portable, military grade hardware...

iStorageNeweggHDD42% below avg

Capacity

500GB

Price

$199.95

$/GB

$0.400

Check Price at Newegg
946

Seagate BarraCuda ES.2 ST3500320NS 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD42% below avg

Capacity

500GB

Price

$200.19

$/GB

$0.400

Check Price at Newegg
947

WD Black 1TB Mobile Hard Disk Drive - 7200 RPM SATA 6Gb/s 32MB Cache 2.5 Inch - WD10JPLX

Western DigitalNeweggHDD90d low

Capacity

1TB

Price

$402.33

$/GB

$0.402

Check Price at Newegg
948

DELL 2 TB 3.5' SATA 7200 RPM Hard Drive 400ATKJ

DELLNeweggHDD41% below avg

Capacity

2TB

Price

$812.22

$/GB

$0.406

Check Price at Newegg
949

HPE 656108-001 1 TB Hard Drive - 2.5' Internal - SATA (SATA/600)

HPNeweggHDD37% below avg

Capacity

1TB

Price

$430.00

$/GB

$0.430

Check Price at Newegg
950

TOSHIBA MK1655GSX 160GB 5400 RPM SATA 3.0Gb/s 2.5' Notebook Hard Drive Retail

ToshibaNeweggHDD36% below avg

Capacity

160GB

Price

$70.10

$/GB

$0.438

Check Price at Newegg
951

Seagate Momentus Thin ST320LT014 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 2.5' Internal Notebook Hard Drive Bare Drive

SeagateNeweggHDD35% below avg

Capacity

320GB

Price

$142.19

$/GB

$0.444

Check Price at Newegg
952

DataLocker DL4 FE 1TB USB 3.2 Portable External Hard Drive DL41TBFE

DataLockerNeweggHDD35% below avg

Capacity

1TB

Price

$448.32

$/GB

$0.448

Check Price at Newegg
953

Axiom 2 TB Hard Drive - SATA (SATA/600) - 3.5' Drive - Internal

AxiomNeweggHDD90d low

Capacity

2TB

Price

$917.20

$/GB

$0.459

Check Price at Newegg
954

HP StorageWorks MSA2 AJ739A 750GB 7200 RPM Dual Port SATA 3.0Gb/s 3.5' Internal Hard Drive Retail

HPNeweggHDD30% below avg

Capacity

750GB

Price

$363.00

$/GB

$0.484

Check Price at Newegg
955

TOSHIBA MK3252GSX (HDD2H01) 320GB 5400 RPM 8MB Cache SATA 1.5Gb/s 2.5' Internal Notebook Hard Drive Bare Drive

ToshibaNeweggHDD23% below avg

Capacity

320GB

Price

$169.00

$/GB

$0.528

Check Price at Newegg
956

TOSHIBA MK8009GAH 80GB 4200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 1.8' Notebook Hard Drive

ToshibaNeweggHDD21% below avg

Capacity

80GB

Price

$43.22

$/GB

$0.540

Check Price at Newegg
957

Seagate SV35.2 ST3250820AV 250GB 7200 RPM 8MB Cache IDE Ultra ATA100 / ATA-6 3.5' Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

250GB

Price

$140.00

$/GB

$0.560

Check Price at Newegg
958

Western Digital Caviar SE WD2500JS 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5' Hard Drive Bare Drive

Western DigitalNeweggHDD

Capacity

250GB

Price

$143.00

$/GB

$0.572

Check Price at Newegg
959

HP QK554AA 500GB 7200 RPM 8MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive

HPNeweggHDD

Capacity

500GB

Price

$293.59

$/GB

$0.587

Check Price at Newegg
960

Western Digital Scorpio Blue WD3200BEVE 320GB 5400 RPM PATA 2.5' Internal Notebook Hard Drive Bare Drive

Western DigitalNeweggHDD

Capacity

320GB

Price

$190.00

$/GB

$0.594

Check Price at Newegg
961

HP 286716-B22 147GB 10000 RPM Ultra320 SCSI 3.5' Hard Drive Retail

HPNeweggHDD

Capacity

147GB

Price

$88.19

$/GB

$0.600

Check Price at Newegg
962

HP QK555AA 1TB 7200 RPM SATA 6.0Gb/s 1.0' Height Internal Hard Drive Bare Drive

HPNeweggHDD

Capacity

1TB

Price

$614.59

$/GB

$0.615

Check Price at Newegg
963

Seagate Momentus 7200.2 ST9160823ASG 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 2.5' Notebook Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

160GB

Price

$114.19

$/GB

$0.714

Check Price at Newegg
964

HP 347708-B22 147GB 15000 RPM Ultra320 SCSI 3.5' Hard Drive Bare Drive

HPNeweggHDD

Capacity

147GB

Price

$111.90

$/GB

$0.761

Check Price at Newegg
965

Seagate Cheetah 15K.5 ST3300655LC 300GB 15000 RPM 16MB Cache SCSI Ultra320 80pin 3.5' Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

300GB

Price

$228.85

$/GB

$0.763

Check Price at Newegg
966

TOSHIBA MK3263GSX 320GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5' Internal Notebook Hard Drive Bare Drive

ToshibaNeweggHDD

Capacity

320GB

Price

$254.00

$/GB

$0.794

Check Price at Newegg
967

Seagate Momentus 7200.1 ST980825AS 80GB 7200 RPM 8MB Cache SATA 1.5Gb/s 2.5' Notebook Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

80GB

Price

$64.00

$/GB

$0.800

Check Price at Newegg
968

Seagate BarraCuda 7200.10 ST380215AS 80GB 7200 RPM 2MB Cache SATA 3.0Gb/s 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

80GB

Price

$71.00

$/GB

$0.887

Check Price at Newegg
969

Seagate Cheetah 10K.6 ST3146807LC 147GB 10000 RPM 8MB Cache SCSI Ultra320 80pin 3.5' Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

147GB

Price

$140.19

$/GB

$0.954

Check Price at Newegg
970

TOSHIBA MK6026GAX 60GB 5400 RPM 16MB Cache IDE Ultra ATA100 / ATA-6 2.5' Notebook Hard Drive Bare Drive

ToshibaNeweggHDD

Capacity

60GB

Price

$57.57

$/GB

$0.960

Check Price at Newegg
971

HP 450GB 15000 RPM 3.5' Internal Hard Drive

HPNeweggHDD

Capacity

450GB

Price

$444.00

$/GB

$0.987

Check Price at Newegg
972

Western Digital Scorpio Blue WD1200BEVE 120GB 5400 RPM 8MB Cache PATA 2.5' Internal Notebook Hard Drive Bare Drive

Western DigitalNeweggHDD

Capacity

120GB

Price

$129.95

$/GB

$1.083

Check Price at Newegg
973

Western Digital Purple Pro WD141PURP 14 TB Hard Drive - 3.5' Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method WD141PURP

Western DigitalNeweggHDD

Capacity

14TB

Price

$16699.00

$/GB

$1.193

Check Price at Newegg
974

seagate barracuda ata iv 40gb udma/100 7200rpm 2mb ide hard drive

SeagateNeweggHDD

Capacity

40GB

Price

$50.00

$/GB

$1.250

Check Price at Newegg
975

Western Digital WD10EZEX-20PK 1TB 64MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive (20-pack)

Western DigitalNeweggHDD

Capacity

1TB

Price

$1350.00

$/GB

$1.350

Check Price at Newegg
976

toshiba mk4032gax 40 gb aries b internal hard drive (hdd2d10)

ToshibaNeweggHDD

Capacity

40GB

Price

$57.62

$/GB

$1.440

Check Price at Newegg
977

Seagate BarraCuda 7200.10 ST380215A 80GB 7200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 3.5' Internal Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

80GB

Price

$119.95

$/GB

$1.499

Check Price at Newegg
978

Seagate EE25.2 Series ST980817SM 80GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5' Extreme Class Internal Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

80GB

Price

$128.00

$/GB

$1.600

Check Price at Newegg
979

toshiba mk3006gal 30gb udma/66 4200rpm 2mb 1.8' mini hard drive

ToshibaNeweggHDD

Capacity

30GB

Price

$59.95

$/GB

$1.998

Check Price at Newegg
980

Seagate Cheetah 15K.5 ST3300655LW 300GB 15000 RPM 16MB Cache SCSI Ultra320 68pin 3.5' Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

300GB

Price

$599.95

$/GB

$2.000

Check Price at Newegg
981

Seagate BarraCuda ST500DM009-25PK 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5' Hard Drive, 25-Pack

SeagateNeweggHDD

Capacity

500GB

Price

$1245.00

$/GB

$2.490

Check Price at Newegg
982

TOSHIBA Super Slimline MK6021GAS (HDD2183) 60GB 4200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 2.5' Notebook Hard Drive Bare Drive

ToshibaNeweggHDD

Capacity

60GB

Price

$154.19

$/GB

$2.570

Check Price at Newegg
983

Seagate Cheetah 10K.7 ST3300007LC 300GB 10000 RPM 8MB Cache SCSI Ultra320 80pin 3.5' Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

300GB

Price

$899.95

$/GB

$3.000

Check Price at Newegg
984

Seagate Cheetah 15K.5 ST3146855LW 147GB 15000 RPM 16MB Cache SCSI Ultra320 68pin 3.5' Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

147GB

Price

$459.95

$/GB

$3.129

Check Price at Newegg
985

Seagate EE25.2 Series ST940818AM 40GB 5400 RPM 8MB Cache PATA 2.5' Rugged Class Internal Hard Drive Bare Drive

SeagateNeweggHDD

Capacity

40GB

Price

$165.00

$/GB

$4.125

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 982+ 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 $0.000/GB, while the average across all drives is $0.688/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 $0.0000/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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