Desktop Hard Drives — 3.5" IDE, ATA & SATA
Every desktop drive interface from ATA-66 through modern SATA 6Gb/s
About Desktop Hard Drives
Desktop hard drive shopping splits into two very different needs: a modern SATA drive for everyday storage, or an exact-generation replacement for an older machine that cannot simply take "whatever is available." We stock both ends — 3.5-inch desktop drives spanning IDE/ATA-66/100/133 through SATA 1.5Gb/s, 3Gb/s and 6Gb/s, in capacities from legacy 6–80GB drives up to modern multi-terabyte SATA units, pulled largely from decommissioned Dell, HP, and Gateway desktops plus standalone Seagate, WD, and Fujitsu mechanisms.
What's in Stock
- IDE / ATA (Ultra ATA-66/100/133) — for pre-2007 desktops that predate SATA entirely; capacities typically 6GB–250GB
- SATA 1.5Gb/s & 3Gb/s — the SATA I/II generation used through the mid-2010s, still the correct match for that era's Dell OptiPlex and HP Compaq towers
- SATA 6Gb/s — current-generation interface for any modern desktop build or upgrade
- 7200 & 5400 RPM — both spindle speeds stocked; RPM affects rebuild/copy time more than day-to-day desktop use
Drive interface and connector are not interchangeable across generations — an IDE drive will not plug into a SATA-only board, and vice versa. Send us the Dell/HP model or the part number off the drive you're replacing and we'll confirm the exact interface and capacity before you order.
Featured Desktop Hard Drives Products
C6536-63001 - HP 9.1GB SCSI Desktop Hard Drive
0C3598 - Dell Desktop Hard Drive Caddy for Optiplex 990$128.95
C3598 - Dell Desktop Hard Drive Caddy for Optiplex 990$110.53
0N218K - Dell Desktop Hard Drive Caddy for Optiplex GX520 / GX620$113.68
N218K - Dell Desktop Hard Drive Caddy for Optiplex GX520 / GX620$113.68
01PH93 - Dell 640GB 7200RPM SATA 3.5-inch Desktop Hard Drive$216.26
7Y250M006665C - Maxtor 250GB 7200RPM SATA 3.5-inch Desktop Hard Drive$172.63
1PH93 - Dell 640GB 7200RPM SATA 3.5-inch Desktop Hard Drive$216.26
Seagate ST1000DM014 Barracuda 1 TB SATA 6Gb/s Desktop Hard Drive$170.53
C6517A - HP 9.1GB Ultra Wide Single Ended SCSI Desktop Hard Drive$481.78
ST93320620AS - Seagate 320GB 7200RPM SATA 3.5-inch LFF DESktop Hard Drive$90.99
09G4C0 - Dell 4000GB 5400RPM SATA 6.0Gb/s 3.5-inch Desktop Hard Drive$363.03
9G4C0 - Dell 4000GB 5400RPM SATA 6.0Gb/s 3.5-inch Desktop Hard Drive$363.03
7Y250M006545C - Maxtor 250GB 7200RPM SATA Desktop 3.5-inch Desktop Hard Drive$300.25
C6536A - HP 9.1GB Single Ended Low-Voltage Differential (LVD) SCSI Desktop Hard$366.74
WD50EZRZSP - 5TB SATA 6.0Gb/s 64MB Cache 3.5-inch Desktop Hard Drive (Blue)
ST3250312AS - Seagate 250GB 7200RPM SATA 3.5-inch DESktop Hard Drive$91.92
DTLA-307030 - IBM 30.7GB 7200RPM ATA-100 IDE 3.5-inch Desktop Hard Drive$282.20
Browse all 96,504 Desktop Hard Drives SKUs.
More Desktop Hard Drives
- 0S03665 - Hitachi Deskstar NAS 4TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive $231.03
- WD84PURZ-20PK - Western Digital Purple 8TB 5640RPM SATA 6Gb/s 128MB Cache 3.5-inch Hard $8,417.68
- WD10EALSFR - Western Digital Caviar Blue 1TB 7200RPM SATA 3Gb/s 32MB Cache 3.5-inch Hard $344.33
- WD141PURP-20PK - Western Digital Purple Pro 14TB 7200RPM SATA 6Gb/s 512MB Cache 3.5-inch $11,370.95
- HUS724040ALE640 - Hitachi Ultrastar 7K4000 4TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch $160.00
- WD10EALX-229BA1 - Western Digital Caviar Blue 1TB 7200RPM SATA 6Gb/s 32MB Cache 3.5-inch $305.05
- WD30EFRX - Western Digital Red 3TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive $168.42
- WD4001FFSX - Western Digital Red Pro 4TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive $210.53
- WD4005FZBX - Western Digital Black 4TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-inch Hard Drive $437.20
- 118032579-A05 - EMC Corporation 1TB 7200RPM SATA 3Gb/s 32MB Cache 3.5-inch Hard Drive $293.89
- 263700-002 - HP / Compaq 1.2GB IDE 3.5-inch Hard Drive $344.33
- WD1006JB - Western Digital Caviar 100GB 7200RPM ATA-100 8MB Cache 3.5-inch Hard Drive $194.87
- WD2001FASS - Western Digital Caviar Black 2TB 7200RPM SATA 3Gb/s 64MB Cache 3.5-inch Hard $128.42
- WD2003FZEX-00SRLA0 - Western Digital Black 2TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch $241.68
- WD200JB - Western Digital Caviar 200GB 7200RPM ATA-100 8MB Cache 3.5-inch Hard Drive $369.84
- WD50EFRX - Western Digital Red 5TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch NAS Hard Drive $286.32
- 0F18664 - Hitachi Ultrastar A7K2000 1TB 7200RPM SATA 3Gb/s 32MB Cache 7-Pin 3.5-inch Hard $180.14
- 100275-520 - HP 40GB 7200RPM IDE Ultra ATA-133 3.5-inch Hard Drive $182.37
- NetApp 108-00197+A0 1TB 7200RPM SATA 3Gb/s 32MB Cache 3.5-inch Hard Drive $250.53
- WD3001FAEX-00MJRA0 - Western Digital Black 3TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch $702.54
- WD30EFRX-68AX9N0 - Western Digital Red 3TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard $434.74
- WD30EFRX-68EUZN0 - Western Digital Red 3TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard $344.84
- WD8001PURP-20PK - Western Digital Purple Pro 8TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-inch $7,798.74
- 00W1439 IBM 500GB 7200RPM SATA 3GB/s 3.5-inch Hot Swappable Hard Drive $417.54
- 176272-B21 - Compaq 20 GB Internal Hard Drive - IDE Ultra ATA/100 (ATA-6) - 7200 rpm $291.79
- 0A31948 - Hitachi 400GB 7200RPM SATA 1.5Gb/s 3.5-inch Hard Drive $105.12
- 0A35856 - Hitachi Deskstar 7K1000 1TB 7200RPM SATA 3Gb/s 32MB Cache 3.5-inch Hard Drive $226.08
- H3D30003254S - Hitachi IDK Deskstar 3TB 5400RPM SATA 6GB/s 32MB Cache 3.5-inch Hard Disk $319.42
- H3U20006472SE - Hitachi 2TB 7200RPM SATA 6Gb/s 3.5-inch Hard Drive $231.87
- HDS721075KLA330 - Hitachi Deskstar 7K1000 750GB 7200RPM SATA 3Gb/s 32MB Cache 3.5-inch $145.26
- D8605-60101 - HP 8.4GB 5400RPM IDE 3.5-inch Hard Drive $128.95
- DD712AV-MAX - HP 80GB 7200RPM ATA-100 2nd Hard Drive $295.79
- 00AD006 - IBM 500GB 7200RPM SATA 6Gb/s Simple-Swappable LFF 3.5-inch Hard Drive $534.78
- 07N8456 - IBM Deskstar 120GXP 20GB 7200RPM ATA-100 2MB Cache 3.5-inch Hard Drive $417.54
- 81Y3864 - IBM 2TB 7200RPM SATA 6Gb/s Hot-Swappable 3.5-inch Hard Drive $683.88
- 301004 - LaCie 500GB 7200RPM ATA / IDE Hard Drive $512.14
- 6L100P0 - Maxtor 100GB 7200RPM 8MB Cache IDE/ATA Ultra-133 3.5-inch Hard Drive $223.05
- L01V100 - Maxtor Basics 100GB 7200RPM IDE Ultra ATA/100 (ATA-6) 16MB Cache 3.5-inch Hard $724.83
- ST380011A-RK - Seagate 80GB ATA-100 7200RPM 2MB Cache 3.5-inch Hard Drive $500.54
- HDEPQ03DLA51 - Toshiba 1TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard drive with Tray $172.62
- MG03ACA300 - Toshiba 3TB 7200RPM 64MB Cache 3.5-inch SATA 6GB/s Hard Drive $145.26
- WD121PURP-20PK - Western Digital Purple Pro 12TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-inch $9,390.32
- WD2000JD - Western Digital Caviar SE 200GB 7200RPM SATA 1.5Gb/s 8MB Cache 3.5-inch Hard $182.37
- WD2000JS-60NCB2 - Western Digital Caviar SE 200GB 7200RPM SATA 3Gb/s 8MB Cache 3.5-inch $226.08
- WD2002FAEX-A1 - Western Digital Caviar Black 2TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch $318.32
- WD2002FPYS - Western Digital 2TB 5400RPM SATA 3Gb/s 3.5-inch Hard Drive $183.75
- WD20EARX - Western Digital Caviar Green 2TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard $128.42
- WD20EZRZ-00Z5HB0 - Western Digital Blue 2TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard $173.70
- WD4000F9YZ-09N20L1 - Western Digital SE 4TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard $392.99
- WD40EFRX-68WT0N0 - Western Digital Red 4TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard $254.74
- WD40PURZ - Western Digital Purple 4TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Surveillance $221.05
- WD42PURZ - Western Digital Purple 4TB CMR SATA 6Gb/s 256MB Cache 3.5-inch Surveillance $150.32
- WD5000AZLX-75K2TA0 - Western Digital Blue 500GB 7200RPM SATA 6Gb/s 32MB Cache 3.5-inch $164.05
- WD60EFRX - Western Digital Red 6TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch NAS Hard Drive $368.42
- WDAC32500-23H - Western Digital Caviar 2.5GB 5200RPM IDE/ATA 128KB Cache 3.5-inch Hard $296.30
- WDBGKN0010HNC - Western Digital Purple 1TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard $384.34
Desktop Hard Drives in stock, by capacity
Live count of desktop hard drives that are priced, photographed and ready to ship, taken from our own catalogue on 26 October 2026. Prices are what you pay, not a list price.
| Capacity | Drives available | Price range | Average |
|---|---|---|---|
| 20GB | 673 | $69.71 – $785.05 | $225.15 |
| 40GB | 1,123 | $66.97 – $881.84 | $202.91 |
| 80GB | 2,328 | $68.42 – $862.55 | $208.07 |
| 120GB | 931 | $66.97 – $741.53 | $230.23 |
| 160GB | 2,211 | $66.97 – $1,085.36 | $220.44 |
| 250GB | 2,152 | $47.37 – $1,849.21 | $246.44 |
| 320GB | 808 | $73.76 – $933.33 | $240.58 |
| 500GB | 2,432 | $50.53 – $8,196.63 | $283.49 |
| 750GB | 921 | $68.42 – $5,802.62 | $337.01 |
| 1TB | 2,448 | $54.74 – $6,152.04 | $342.73 |
| 2TB | 1,500 | $61.05 – $6,672.93 | $416.16 |
| 3TB | 827 | $100.00 – $7,329.72 | $529.67 |
Need several of one capacity? Paste the part numbers into the quick order pad, or ask for a bulk quote.
Frequently Asked Questions
Can I put a SATA drive in an old IDE-only desktop?
Not directly — the connectors and signaling are physically and electrically different. Some IDE-to-SATA bridge adapters exist, but the safest and most reliable fix for a legacy desktop is a matching IDE replacement drive, which is why we keep ATA-66/100/133 stock rather than relying on adapters.
What is the difference between SATA 1.5Gb/s, 3Gb/s and 6Gb/s?
These are successive SATA revisions (SATA I, II, III) with rising maximum interface bandwidth. They are backward compatible — a 3Gb/s drive works in a 1.5Gb/s port at the lower speed — so for an older desktop board, matching or exceeding the board's native SATA generation is safe. The bottleneck on a mechanical hard drive is usually the platters, not the interface, so the practical speed difference is small.
Do you test these drives before shipping?
Yes — every desktop hard drive is surface-tested and SMART-checked before it ships. These are working pulls and tested surplus, not as-is/untested drives.