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Dell 400-AUWK - 12TB 3.5" Nearline SATA 7.2K 6Gb/s Hard Drive
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  • $674.09 
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SEAGATE ST900MP0146 SEAGATE 900GB EXOS 15E900 HDD 4KN/512E SAS 2.5 15000 256MB
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  • $384.45 
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DELL 00Y 500Gb 7200Rpm Sata6Gbps 2.5Inch Low Profile Hard Disk Drive
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HPE ISS 861686-B21 1TB SATA 7.2K LFF LP DS HD
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Seagate ST2000VN000 2TB 64MB Cache SATA 6.0Gb/s Internal Hard Drive
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  • $148.10 
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Seagate ST10000NM0236 10 TB Hard Drive - SAS (12Gb/s SAS) - 3.5" Drive - Internal
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  • $470.10 
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HPE ISS 872475-B21 300GB SAS 10K SFF SC DS HDD
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HPE 693647-001 1.20 TB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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  • $60.00 
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XWM1W ST4000NM0005 Dell ENTERPRISE 4TB 7200RPM 12Gbps 3.5" SAS HDD Hard Drive
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  • $199.00 
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Seagate 1TB Desktop HDD Hard Drive - Internal (ST1000DM003)
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  • $85.00 
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HPE ISS 870759-B21 900GB SAS 15K SFF SC DS HDD
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HPE 605832-001 500 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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HP 4 TB 3.5" Internal Hard Drive
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  • $199.90 
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HP 625031-B21 3 TB 3.5' Internal Hard Drive
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  • $68.19 
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Dell 341-9630 600GB 15000 RPM SAS 3Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $102.19 
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Dell 0C3YJM (ST500NM0011) 500GB 7.2K RPM 3.5" SATA-6GB/s HDD
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LOT OF 10-Seagate ST3300657SS 9FL065 300GB 15K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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  • $675.00 
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HP 1 TB 3.5" Internal Hard Drive
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  • $80.19 
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HP 1 TB 3.5" Internal Hard Drive
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HP 628059-B21 3 TB 3.5' Internal Hard Drive
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  • $182.47
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  • $126.19 
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M40TH ST8000NM0185 Dell 8TB 7.2K RPM 12Gb/s 3.5" SAS Hard Drive 0M40TH
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  • $468.95 
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Dell 300GB 10K RPM 2.5" SAS Hard Drive with Tray  Seagate ST9300603SS  C975M
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Dell 36RH9 1.2TB 10000RPM 6Gb/s 2.5" SAS Hard Drive Seagate ST1200MM0088
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529FG ST4000NM0023 Dell 4TB 7.2K RPM 6Gb/s 3.5" SAS SERVER HDD Hard Drive
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DELL
529FG ST4000NM0023 Dell 4TB 7.2K RPM 6Gb/s 3.5" SAS SERVER HDD Hard Drive
  • Model #: ST4000NM0023-529FG-0529FG-dell-new-drive
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  • $125.00 
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55RMX ST9500620SS Dell ENT 500GB 7.2K RPM 6Gb/s 2.5" SAS SERVER HDD Hard Drive
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  • $58.88 
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FVX7C 0FVX7C Dell ST2000NX0433 2TB 7.2K RPM 12Gb/s 2.5"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