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Seagate ST1200MM0007 1DA200-038 1.2TB 10K 6G 64MB 2.5" SAS Hard Drive HDD V7
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  • $42.95 
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ST91000640SS Seagate 9RZ268-175 1TB 7.2K RPM 6Gbps 2.5" SAS HDD Hard Drive
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  • $43.96 
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LOT OF 10 - Dell R95FV ST600MM0088 600GB 10K RPM 12Gb/s 2.5" SAS HDD Hard Drive
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  • $590.10 
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ST9300605SS Seagate 745GC 0745GC 300GB 10K RPM 6Gb/s 2.5" SAS Hard Drive
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  • $30.96 
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ST9146802SS 9F6066 Seagate SAVVIO 146GB 10K RPM 3Gb/s 2.5"SAS Hard Drive W/Caddy
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  • $22.95 
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ST9600205SS Seagate 9TG066 600GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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  • $33.96 
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ST9300603SS Seagate 9FK066-008 300GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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  • $42.00 
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ST9500423AS Seagate 9RT143 500GB 7200RPM 3Gbps 2.5" SATA HDD Hard Drive
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  • $34.00 
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ST9250410ASG Seagate 9PSG42 MOMENTUS 250GB 7200RPM 3Gbps 2.5"SATA HDD Hard Drive
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  • $28.95 
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ST3146755SS Seagate 9DK066 CHEETAH T10 146GB 10KRPM 3Gb/s 3.5"SAS HDD Hard Drive
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  • $88.96 
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HP MB1000EAMZE 1Tb 7200Rpm 3.5Inch 3G Sata Lff Hotplug Ncq Hard Disk Drive With Tray
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  • $155.00 
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Seagate BARRACUDA 7200.10 ST3250310AS 250GB 7.2K 3G 8MB 3.5in SATA Hard Drive
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  • $35.96 
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ST3250620AS Seagate 9BJ14E-022 250GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $39.96 
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IBM 42D0519 450GB 15000 RPM SAS 3.5" Internal Hard Drive
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  • $244.00 
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Dell 1CJF5 3TB Equallogic SAS 6Gbps 3.5Inch Hdd PS4100 and PS6100
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01EJ588 01EJ723 01EJ867 IBM V3700 V2 1.8TB 10000RPM 12Gbps 2.5" SAS Hard Drive
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  • $310.00 
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0-HRS RF9T8 HUC101818CS4024 Dell 1.8TB 10KRPM 6Gbps  2.5"SAS SERVERHDD HardDrive
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HP 5697-6817 450Gb 15000Rpm Fibre Channel Hard Disk Drive With Tray
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  • $125.19 
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HP 375874-021 1Tb 7200Rpm 3.5Inch Sas Dual Port Hot Swap Midline Hard Drive With Tray
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  • $141.19 
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HP 619286-003 600Gb 10000Rpm 2.5Inch Sff Dual Port Sas6Gbits Hard Disk Drive With Tray
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  • $77.00
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  • $60.19 
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ST3160318AS Seagate 9SL13A-034 160GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $26.95 
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ST3450856SS Seagate 9CL066 450GB 15K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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  • $32.95 
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ST3450857SS Seagate 9FM066-038 450GB 15K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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  • $42.95 
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LOT OF 10 - DELL 4X1DR WD9001BKHG 900GB 10000RPM 6Gb/s 2.5" SAS HDD Hard Drive
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  • $570.10 
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ST9500420AS Seagate 9HV144-071 500GB 7200RPM 3Gbps 2.5" SATA HDD Hard Drive
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  • $28.95 
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HP 655710-B21 1 TB 2.5-inch Internal Hot-Swap Drive - SATA - 7200rpm
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  • $116.00 
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68V42 ST1200MM0007 (LOT OF 10) Dell EQL 1.2TB 10K RPM 6Gbps 2.5" SAS Hard Drive
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  • $550.00 
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ST8000NM0075 8TB 7.2K RPM 12G 3.5" SAS HDD For Dell T300 T310 T320 T330 T410
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  • $348.95 
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ST8000NM0075 8TB 7.2K RPM 12G 3.5" SAS HDD For Dell T420 T430 T440 T605 T610
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  • $350.00 
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Seagate ST2000NM0033 2TB 7200RPM 128MB Cache SATA 6.0GB/s Internal Hard Drive
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  • $80.00 
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873031-001 872842-B21 HP 300GB 12G 15K DS SAS 2.5" Hard Drive
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  • $299.00 
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LOT OF 10 - Dell 2T51W 02T51W 1TB 7.2K RPM 6Gb/s 3.5" SATA HDD Hard Drive
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  • $620.10 
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ST300MM0006 Seagate SAVVIO 9WE066-179 10K.6 300GB 10K 6G 64MB 2.5"SAS Hard Drive
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  • $26.95 
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ST900MM0006 Seagate 9WH066 10K.6 900GB 10K RPM 6Gbps 2.5" SAS Hard Drive
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  • $37.96 
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ST3300657SS Seagate 9FL066-036 300GB 15K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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ST373355SS Seagate 9DL066-051 73GB 10K RPM 3Gb/s 3.5" SAS HDD Hard Drive
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ST1200MM0009 Seagate 1XH200-175 1.2TB 10K 12G 128MB 2.5in SAS Hard Drive
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  • $65.00 
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ST9146853SS Seagate 9SV066 146GB 15K 6Gbps 64MB Cache 2.5" SAS HDD Hard Drive
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  • $24.95 
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ST2000NM0033 Seagate 9ZM175-001 2TB 7.2K RPM 6Gbps 3.5" SATA HDD Hard Drive
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  • $79.00 
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HPE 861683-B21 4 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
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  • $324.10 
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ST3160316AS 9YP13A-304 Seagate BARRACUDA 160GB 7.2KRPM 6Gbps 3.5"SATA Hard Drive
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  • $46.96 
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ST3500413AS 9YP142-304 Seagate 500GB 7200RPM 6Gbps 3.5"SATA HDD Hard Drive
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  • $42.95 
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ST32000444SS Seagate 9JX248-003 2TB 7200RPM 6Gbps 3.5" SAS HDD Hard Drive
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  • $68.95 
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0J18771 HTS727550A9E364 Hitachi 500GB 2.5" SATA 7200RPM 3Gb 16MB Cache 7K750 HDD
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  • $48.95 
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LOT OF 10 - Dell H962F WD2502ABYS 250GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $590.10 
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HP 404701-001 300GB 10000 RPM Ultra320 SCSI 3.5" Internal Hard Drive
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  • $47.19 
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ST9500530NS Seagate 9FY156-004 500GB 7200RPM 3Gbps 2.5" SATA HDD Hard Drive
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  • $38.96 
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LOT OF 3-Seagate ST9300653SS 9SW066 300GB 15K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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  • $93.10 
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ST3500630AS Seagate 9BJ146 500GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $89.95 
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ST9300653SS Seagate 9SW066-046 300GB 15000RPM 6Gbps 2.5" SAS HDD Hard Drive
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  • $36.00 
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Dell/Seagate ST3300655SS 300GB SAS 3.5" Hard Drive
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Dell/Seagate ST3300655SS 300GB SAS 3.5" Hard Drive
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Dell- 1.2Tb 10K Sas 6Gb/S 2.5" Hd -Mfg # 6Dhkk (Comes With Drive And Tray)
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Seagate ST3250312AS 9YP131-020 FW:HP61 TK 250GB 3.5" Sata Hard Drive, 636927-001
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HP 9BM004-044 1Tb 7200Rpm Fata Hard Disk Drive With Tray For Storageworks
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  • $172.09 
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LOT OF 10 - Dell 2G4HM WD2003FYYS 2TB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $610.00 
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Desktop internal hard drives store operating systems, system files, software and individual files. They can offer anywhere from 500GB of storage up to 8TB or more and come with a variety of interfaces. Although most internal drives are 3.5in., some devices use a smaller 2.5in. form factor. Smaller and larger physical sizes are rare but do exist. Also, consider the speed of the drive. Internal hard drives for desktop computers tend to run at 7,200 revolutions per minute (RPM) but faster read-write speeds minimize waiting time. Hard drives with speeds of up to 15,000 RPM are available. Finally, memory cache is the amount of memory that can be active at any given time. A larger cache is important if you work with multiple large files at once.

Improve Your Computer's Performance with a New Hard Drive

You might not be concerned about storage space when you buy a new PC, but the hard drive will fill will with files and software. A new desktop internal hard drive can replace an existing drive that has reached maximum capacity. Alternatively, if your motherboard has a spare bay, you can add a second or additional device to expand storage. An internal HDD for PCs is easy to install, has greater capacity and speed than an external device and comes with multiple storage options.

Store All Your Data with Large Capacity Drives

Every piece of software you install, every song you save, every video you download takes up storage space, which can slow down a computer. A 720p movie takes up approximately 8GB, while a 4k video can consume as much as 100GB of a desktop internal hard drive. Even the Windows 10 operating system requires 15GB. A 500GB hard drive can be useful for storing files while you're on the move before transferring them to a larger drive if you don't have a personal cloud device or portable hard drive. For everyday and ongoing storage, this size drive will quickly fill up. Desktop internal hard drives offer the storage of up to 16TB in some cases, providing plenty of space for software and files.

Ensure Compatibility by Choosing the Right Interface

The most commonly used standards for connecting a desktop internal hard drive to a motherboard are SATA and SAS. Determine the motherboard's interface and ensure that you match this when buying a new drive to ensure compatibility and to avoid having to use an adapter. Check the label off the drive you are replacing or look at the manufacturer guidelines for your motherboard.

Access Data Quicker with a Fast SATA Internal Hard Drive

The speed the disk platters spin determines how quickly information can be retrieved from the drive. It is common for external hard drives to have a speed of 5,000 RPM because this draws less power and makes minimal noise. Other hard drive designs have a speed of up to 15,000 RPM, depending on the model.

Bestselling Desktop Internal Hard Drives Reviews:

Perry K.
3/26/2026 7:05:57 AM
Seagate Barracuda 2TB Hard Drive

“ Received and installed new Seagate Hard Drive in older Dell Inspiron PC. ”

Seagate BarraCuda ST2000DM008 2TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
Anonymous
1/22/2026 4:08:37 PM
Perfect 28TB NAS Drives Great For UGREEN Plex

“ One drive is my primary Plex/media volume, the other is my internal backup. ”

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