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Maxtor MaXLine III 7L250S0 250GB 7200 RPM 16MB Cache SATA 1.5Gb/s 3.5" Hard Drive Bare Drive
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HPE 1TB Internal Hard Drive - SATA/600 Controller - 2.5  Internal Drive - 7200rp
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  • $114.00 
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Dell 400-AUNQ 600 GB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
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  • $115.00 
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Dell 400-AVBX 2.40 TB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
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  • $176.95 
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7KT9W Dell 12TB SAS 3.5" 7.2K 12G Server Hard Drive ST12000NM009G G14-G16
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HP MSA 8TB 12G SAS 7.2K 3.5IN 512E H
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st318404lw 18GB 10000 RPM 4MB Cache SCSI 3.5" Hard Drives
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Samsung HD502HJ Spinpoint F3 HD502HJ 500 GB Hard Drive - 3.5" Internal - SATA (SATA/300)
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Dell 394XT SATA 2.5 Inch Solid State Drive - 120 GB - 6 Gbps
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81Y9795 81Y9794 81Y3864 IBM 2TB 7.2K RPM 6Gb/s 3.5" SATA SERVER HDD Hard Drive
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Hitachi (HTS723232A7A364) 320GB 7200RPM SATA 3.0Gb/s 2.5" Notebook Hard Drive
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  • $54.50 
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HTS545032A7E680 Hitachi 320GB 5400RPM 6Gb/s 2.5" SATA Hard Drive 0J41953
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627985-001 HP 320GB 5.4K RPM 3Gb/s 2.5" SATA Laptop HDD Hard Drive
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HP
627985-001 HP 320GB 5.4K RPM 3Gb/s 2.5" SATA Laptop HDD Hard Drive
  • Model #: 627985-001-HTS543232A7A384-hp-new-ATP
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HTS727550A9E364 Hitachi 0J18811 500GB 7.2K RPM 3Gb/s 2.5"SATA HDD Hard Drive
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LENOVO 00WG661 00WG660 00WG664 300GB 15K RPM 12Gbps G3HS 2.5" SAS HDD Hard Drive
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656107-001 655708-B21 HP 500GB 7.2K RPM 6Gb/s 2.5" SATA SERVER HDD Hard Drive G8
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HTS725032A7E635 0J38653 HGST 320GB 7.2K RPM 6Gb/s 2.5" SATA LAPTOP Hard Drive
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  • $41.88 
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872737-001 872479-B21 HPE 1.2TB 10K RPM 12Gb/s 2.5" SAS SERVER HDD Hard Drive
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9RZ264-039 IBM ST9500620SS 500GB 7.2K RPM 6Gb/s 2.5" SAS SERVER HDD Hard Drive
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00Y2431 00Y2505 00Y5721 IBM 900GB 10K RPM 6Gb/s 2.5" SAS SERVER HDD Hard Drive
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LOT OF 10 - 745GC ST9300605SS Dell 300GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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655710-B21 656108-001 HP 1TB 7.2K RPM 6Gbps 2.5" MDL SATA Hard Drive W/Caddy
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EH0300FCBVC652611-B21 652625-002 HP 300GB 15K RPM 6Gb/s 2.5" SFF SAS 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