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HTS542525K9SA00 0A54976 Hitachi 250GB 5400RPM 1.5Gbps 2.5" SATA HDD Hard Drive
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Lenovo 00FC425 500 GB Thin 2.5-inch SATA 7 mm Internal Hard Drive - 7.2K RPM
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IBM 80 GB 3.5" Internal Hard Drive
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IBM 00Y2429 - 300GB 2.5" SAS 10K 6Gb/s HS Hard Drive
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WD6400AAKS Western Digital C118D 640GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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432320-001 431954-003 DG146ABAB4 HP 146GB 10K RPM 3Gbps 2.5" SAS HDD Hard Drive
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Dell R734K 500GB 7.2k RPM 6Gbps SAS 2.5" Hard Drive w/ Caddy 0R734K
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HP 289042-001 72.8GB 10000 RPM SCSI Ultra320 3.5" Internal Hard Drive
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ST31000424SS Seagate 9JX244-031 1TB 7.2K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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Dell 9V4PG 1TB SATA 7.2K 6GBPS 3.5" Drive WD10EALX-759BA1
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574270-001 649401-001 574023-B21 HP 500GB 7.2K 3G 3.5" QR MDL SATA Hard Drive
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0-HRS ST600MM0026 Seagate 9WL066 10K.6 600GB 10KRPM 6Gb/s 2.5"SAS HDD Hard Drive
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WD7500AALX Western Digital 750GB 7.2K RPM 6Gb/s 3.5" SATA HDD Hard Drive
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Western Digital WD2500LPLX 1WPC8 250GB 7200RPM 6Gbps 2.5" SATA Hard Drive
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HDS721050CLA662 Hitachi 0F15012 500GB 7200RPM 6Gbps 3.5" SATA HDD Hard Drive
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HUC109090CSS600 0B26054 HGST 900GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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0B25662 HUC106060CSS600 HITACHI 600GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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Dell R727K 73GB 15000 RPM SAS 6Gb/s 2.5" Internal Hard Drive
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Dell AL13SEB300 MTV7G 0MTV7G 300GB SAS 2.5" 10K Hard Drive W/O Tray
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TOSHIBA HDEBC01JGA51 AL13SEB600 600GB 10K 2.5 6G SAS Hard Drive
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432322-001 431933-B21 HP 36GB 15K RPM 3Gb/s 2.5" SAS SERVER HDD Hard Drive
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IBM 43W7523 73GB 15000 RPM SAS 3.5" Internal Hard Drive
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DELL M1294 80Gb 7200Rpm Sata 8Mb Buffer 7Pin 3.5Inch Hard Disk 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