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Hitach HCS721050CLA362 500GB 3.5" Internal Hard Drive
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  • $44.95 
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HP 504336-001 160GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
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  • $33.99 
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Dell CWHNN 300GB 10k RPM 2.5" 32MB SAS-6Gb/s HDD
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DELL T871K DELL 300GB 10K RPM 2.5 SAS HARD DRIVE with R Series Tray
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9WH066-150 Dell 900GB 10K SAS 6G SFF Hard Drive
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Dell 1KWKJ 500GB 7.2k 3.5" SATA-3Gb/s HDD
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Dell 1KWKJ 500GB 7.2k 3.5" SATA-3Gb/s HDD
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ST300MM0006-DELL 300GB 10K 6G SFF SAS HDD
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ST3200827AS Seagate 9BD13E-620 200GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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Dell CWHNN 300GB 10K 2.5" SAS Hard Drive
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X79H3 DELL 300GB 10K SAS 2.5 HDD 6GBPS
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  • $45.00 
HPE-IMSourcing 160 GB 3.5" Internal Hard Drive - SATA
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  • $45.00 
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HE161HJ Samsung 160gb 7.2k Rpm Sata 3.5inch Hard Drive
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HP 146 GB 2.5" Internal Hard Drive
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IBM 250 GB 2.5" Internal Hard Drive
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SEAGATE BULK ST1000NM0055 1TB Exos 3.5 512n SATA
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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