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WD3000HLFS Western Digital VELOCIRAPTOR 300GB 10K 3G 16MB 3.5in SATA Hard Drive
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Dell Hard drive - 1.2 TB 400-AJPI Hard drive
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Toshiba MK2576GSX 250 GB 2.5' Internal Hard Drive
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SEAGATE ST1000NM001A 1TB 7200RPM 256MB SAS 3.5
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  • $75.00 
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0-HRS ST1000NM0023 Seagate 9ZM273-001 1TB 7200RPM 6Gbps 3.5" SAS Hard Drive
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DELL ENTERPRISE ACCESSORIES 400-AJRC 600GB HYBRID DELL 13G SAS
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Seagate Pipeline HD ST3320310CS 320GB 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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ST2000NM0023 Seagate 9ZM275-031 2TB 7.2KRPM 6Gb/s 3.5"SAS HDD Hard Drive W/0 HRS
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HP AW555A 2TB 7200 RPM SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $60.19 
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HP 657750-S21 1TB 7200 RPM SATA 6.0Gb/s 3.5" LFF SC Midline Hard Drive S-Buy Bare Drive
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  • $128.19 
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Seagate BarraCuda ES ST3750641NS 750GB 7200 RPM SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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BUFFALO 1TB Replcement  HD TeraStation Model OP-HD1.0BST-3Y
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  • $99.99 
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HP 652749-B21 7200 RPM SAS 6Gb/s 2.5" SFF SC Midline Hard Drive
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ST500NM0011 Seagate 9YZ162 500GB 7.2K RPM 6Gb/s 3.5"SATA HDD Hard Drive-(0 H0RS)
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HP 347708-B22 147GB 15000 RPM Ultra320 SCSI 3.5" Hard Drive Bare Drive
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ST2000NM0105 Seagate ENT 2TB 3.5" SATA 7.2K RMP 6G/s Hard Drive
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Seagate ST380013AS 9W2812-351 80GB 7.2K RPM 1.5Gbps 3.5" SATA HDD Hard Drive
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0-HOURS ST9146852SS Seagate 9FU066 146GB 15K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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ST320LT007 Seagate 9ZV142-034 320GB 7.2K RPM 3Gb/s 2.5" SATA LAPTOP Hard Drive
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ST3450857SS Seagate 9FM066-038 450GB 15K RPM 6Gb/s 3.5"SAS SERVER HDD Hard Drive
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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