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H8DVC ST9300653SS Dell POWEREDGE 300GB 15K RPM 6Gb/s 2.5" SAS SERVER Hard Drive
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2RR9T ST900MM0006 Dell 900GB 10K 6Gb/s 64MB Cache 2.5" SAS Hard Drive W/Caddy
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0CM318 CM318 Dell ST9146802SS 146GB 10K RPM 3Gbps 2.5" SAS SERVER HDD Hard Drive
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  • $37.00 
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Dell P252M 0P252M 300GB 10K 6G 16MB 2.5" SAS Hard Drive HUC103030CSS600
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  • $37.00 
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Dell 7YX58 600GB SAS 10K 6GBPS 2.5" Drive ST600MM0006 9WG066-150
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  • $37.33 
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Dell 1TB 7.2K 6Gbps SATA 3.5 HDD 512n (W0VNC)
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  • $37.34 
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IBM 40K1044 146GB 15000 RPM 8MB Cache SAS 3Gb/s 3.5" Internal Hard Drive
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  • $37.49 
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R72NV 0R72NV ST9600205SS DELL 600GB 10K 6G SFF SAS HDD FOR M610 M710 M805 M915
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  • $37.50 
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ST600MM0006-DELL 600GB 10000RPM 6GBPS SED SFF SAS HARD DRIVE
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  • $37.50 
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Hitachi 250GB 5400RPM 2.5' SATA HTS545025B9A300
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  • $37.89 
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Dell 55RMX 055RMX 500GB 6G 7.2K 2.5" SAS Hard Drive ST9500620SS
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  • $37.90 
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ST900MM0006 Seagate 9WH066 10K.6 900GB 10K RPM 6Gbps 2.5" SAS Hard Drive
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  • $37.96 
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HCS721050CLA362 0F13836 Hitachi 500GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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Seagate ST300MM0006 300GB 10000 RPM SAS 6Gb/s 2.5" Savvio 10K.6 Hard Drive
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Dell 1KWKJ 500 GB 3.5 " 7.2 K Sata Hard Drive with Tray
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9SV066-150 Dell 146GB 15K SAS 6G SFF Hard Drive
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Dell 7YX58 600GB 10k RPM 2.5" SAS-6Gb/s hdd
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Dell TMN2K 250 GB Hard Drive - 3.5" Internal - SATA (SATA/150)
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990FD Dell 600GB 2.5" SFF SAS 6Gb 15K Hard Drive HDEAE00DAA51 0990FD Refurbished
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Dell (9W5WV) 1TB 7.2K SAS 2.5" Hard Drive
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636929-001 HP 500GB 6G NCQ 7.2K SATA LFF 3.5" Hard Drive 633980-001 639709-001
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Western Digital RE4 WD1003FBYX 1 TB 3.5' Internal Hard Drive
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WD RE WD1003FBYX 1 TB 3.5" Internal 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