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WD2500AAKX Western Digital M4HXR 250GB 7200RPM 3Gbps 3.5" SATA Hard Drive
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IBM 42D0777 1TB 7200 RPM SAS 600 Serial Attached SCSI 3.5" Internal Hard Drive
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IBM 43W7536 146GB 10000 RPM SAS 2.5" Internal Hard Drive
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Maxtor 91024D4 IDE 3.5" Hard Drives Bare Drive
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9H0FC 500GB 7200RPM SATA 3.5Inch Dell Hard Drive
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ST3250820AS Seagate 9BJ13E-033 250GB 7.2K RPM 3Gbps 3.5" SATA HDD Hard Drive
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61XPF ST9146853SS Dell SAVVIO 15K.3 146GB 15000RPM 6Gb/s 2.5" SAS HDD Hard Drive
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HP C8S58SB 600GB 10000 RPM SAS-2 2.5" Internal Hard Drive
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X162K ST9146852SS Dell 146GB 15KRPM 6Gb/s 2.5"SAS SERVER HDD Hard Drive W/R Tray
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ST3160318AS Seagate 9SL13A-034 160GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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ST300MM0006 Seagate SAVVIO 9WE066-179 10K.6 300GB 10K 6G 64MB 2.5"SAS Hard Drive
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UM837 9Z3066-051 DELL 73GB 15K RPM 3Gb/s 3.5" LFF SAS Hard Drive ST373455SS
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Dell X162K ST9146852SS 146GB 15K RPM 6Gb/s 2.5" SAS HDD Hard Drive W/Caddy
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7149N-CML ST9600205SS Dell COMPELLENT 600GB 10K 6G 64MB 2.5in SAS Hard Drive
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26K5841 39R7348 IBM 73GB 15000RPM 3Gbps 3.5" HS SAS  Hard Drive HUS153073VLS300
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Maxtor 13.6GB 3.5in IDE Hard Drive 91360U4
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Dell G731N - Dell 146GB 2.5" SAS 10K 6Gb/s Hard Drive
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ST3808110AS Seagate 9BD131-034 80GB 7200RPM 3Gbps 3.5" SATA 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