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WD Red Pro 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - WD161KFGX
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WD Red Pro 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - WD161KFGX
  • Brand: WD
  • Series: Red Pro
  • Capacity: 16TB
  • RPM: 7200 RPM
  • Model #: WD161KFGX
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Dell 2T51W 1 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
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  • $44.95 
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50XV4 050XV4 Dell WD1002FBYS ENTERPRISE 1TB 7.2K RPM 3Gb/s 3.5" SATA Hard Drive
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  • $38.95 
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YVMKX 0YVMKX Dell ST250DM000 250GB 7.2K RPM 6Gb/s 3.5" SATA HDD HARD DRIVE
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  • $40.00 
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HT953 0HT953 DELL ST3300655SS 300GB 15K RPM 3Gb/s 3.5" SAS SERVER HDD Hard Drive
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  • $36.95 
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DY635 0DY635 ST3146854SS Dell 146GB 15K RPM 3Gb/s 3.5" SAS HDD Hard Drive
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  • $68.00 
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R755K ST32000444SS Dell 2TB 7.2K RPM 6Gb/s 3.5" SAS SERVER HDD Hard Drive
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  • $62.95 
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Dell KH674 80 GB Hard Disk Drive - 5400 RPM - SATA - 2.5 Inches
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  • $21.49 
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2RR9T ST900MM0006 Dell 900GB 10K 6Gb/s 64MB Cache 2.5" SAS Hard Drive W/Caddy
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  • $37.00 
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5JH5X ST4000NM0295 Dell 4TB 7.2KRPM 12Gb/s 3.5"SAS SERVER HDD Hard Drive W/Caddy
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  • $74.95 
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  • $68.95 - $74.95
Dell G11X0 600 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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  • $78.00 
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Dell 0KV02 SAS 2.5 Inch Internal Hard Drive - 1.2 TB - 10000 RPM
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DELL
Refurbished Dell 0KV02 SAS 2.5 Inch Internal Hard Drive - 1.2 TB - 10000 RPM
  • NAND Flash Memory Type: SLC
  • Features: Hot Swap
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: 0KV02
Dell 14X4H 014X4H HDEPC01DLA51 MG03SCA300 3TB 7200 RPM 3.5 SAS Hard Drive EE2
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  • $58.95 
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H962F WD2502ABYS Dell 250GB 7200RPM 3Gbps 3.5" SATA ENTERPRISE Hard Drive
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  • $41.96 
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4X1DR Dell Western Digital 900GB HDD Hard Drive 10K RPM SAS 2.5" WE9001BKHG-14
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  • $48.95 
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P252M 0P252M HUC103030CSS600 Dell 300GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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  • $35.96 
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X829K ST9146803SS Dell 146GB 10K RPM 6Gb/s 2.5"SAS SERVER HDD Hard Drive W/Caddy
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  • $35.96 
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DELL 2TB 7.2K SATA 3.5" 3Gb/s HARD DRIVE WD2003FYYS DP/N 2G4HM
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  • $58.00 
2G4HM Dell WD2003FYYS 2TB 7200RPM 3Gb/s 3.5" SATA SERVER HDD Hard Drive W/Caddy
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  • $53.96 
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U795J Dell EqualLogic 500GB 7200RPM 3.5" SATA Hard Drive - In PS100E PS200E PS300E PS400E Tray
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  • $39.99 
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2T51W 02T51W Dell ST1000NM0011 1TB 7200RPM 6Gbps 3.5" SATA HDD Hard Drive
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  • $65.00 
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JP620 0JP620 ST3146755SS Dell 146GB 10K RPM 3Gb/s 3.5" SAS HDD Hard Drive
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  • $34.96 
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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:

the Muttonmastwer
5/11/2026 11:18:09 AM
Hasn't broken yet

“ I have it attached via USB on my desktop and it has all my work on it, safe from Windoze crash damage or erasure on OS re-installs. ”

WD Blue 500GB Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 16MB Cache 3.5 Inch - WD5000AAKX