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WD6001BKHG Western Digital XE 600GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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  • $63.88 
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WD3200BPKT Western Digital 320GB 7.2K RPM 3Gb/s 2.5" SATA Laptop Hard Drive
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  • $69.88 
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WD3200AAKS Western Digital 320GB 7.2K RPM 3Gb/s 3.5" SATA DESKTOP HDD Hard Drive
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WD10EURS Western Digital AV-GP 1TB 5.4K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $74.88 
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WD3202ABYS Western Digital RE3 320GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $74.88 
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WD3200JS Western Digital 320GB 7.2K RPM 3Gb/s 3.5" SATA Hard Drive (WD3200JS)
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  • $73.88 
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LOT OF 10 -Seagate ST300MM0006 9WE066 300GB 10K RPM 6Gb/s 2.5"SAS HDD Hard Drive
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  • $370.10 
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WD5000AZLX Western Digital FY6CW 500GB 7.2KRPM 6Gb/s 3.5"SATA DESKTOP Hard Drive
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  • $99.88 
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0_HOURS WD5003ABYX Western Digital 500GB 7200RPM 3Gbps 3.5" SATA Hard Drive
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  • $52.88 
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WD4001ABYS Western Digital RE2 400GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $39.88 
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WD3200AAKX Western Digital 320GB 7.2K 6G 16MB 3.5in SATA Hard Drive
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  • $60.88 
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WD5000LPSX Western Digital 500GB 7200RPM 6Gbps 2.5" SATA Laptop HDD Hard Drive
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  • $115.00 
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WD6401AALS Western Digital BLACK 640GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $89.88 
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WD3200YS Western Digital CAVIAR RE16 320GB 7200RPM 3Gbps 3.5" SATA Hard Drive
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  • $79.88 
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0-HOURS WD2503ABYX Western Digital 250GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $41.88 
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0-HOURS Western Digital WD3200AAJS 320GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $46.88 
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Western Digital AV-GP WD15EVDS 1.5TB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $71.88 
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WD5002AALX Western Digital Caviar BLACK 500GB 7200RPM 6Gbps 3.5" SATA Hard Drive
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  • $59.88 
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WD6000BLHX Western Digital VelociRaptor 600GB 10K 6G 32MB 2.5" SATA Hard Drive
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  • $106.88 
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WD6000HLHX Western Digital 600GB 10000RPM 6Gbps  2.5" SATA HDD Hard Drive
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  • $90.00 
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Dell 12 GB 2.5" Internal Hard Drive - SAS
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Western Digital WD40EZRX?CAREEXT 4TB 3.5" Internal Hard Drive
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  • $179.00 
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WD740ADFD Western Digital RAPTOR 74GB 10K RPM 1.5Gb/s 3.5" SATA HDD Hard Drive
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  • $229.88 
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WD800BEVT Western Digital PW059 BLUE 80GB 5400RPM 3Gbps 2.5" SATA HDD Hard Drive
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  • $45.91 
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WD800BEKT Western Digital 80GB 7200RPM 3Gbps 2.5" SATA Laptop Hard Drive
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  • $84.88 
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WD2500LPVX Western Digital 250GB 5400RPM 6Gbps 2.5" SATA HDD Hard Drive
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  • $46.88 
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WD20EADS Western Digital GREEN 2TB 5.4K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $190.00 
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WD20NPVX Western Digital GREEN 2TB 5.4K RPM 6Gb/s 2.5" SATA HDD Hard Drive
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  • $198.88 
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DELL 400-ATKM 4 TB 3.5" NL-SAS 7200RPM Hard Drive
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HP 2.40 TB 2.5" Internal Hard Drive - SAS
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LOT OF 10 - Seagate ST900MM0006 9WH066 900GB 10K RPM 6Gb/s 2.5" SAS Hard Drive
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  • $410.00 
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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:

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