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0-HOURS 9TG066-046 Seagate ST9600205SS SAVVIO 10K.5 600GB 10K RPM 6Gbps 2.5" SAS Hard Drive
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0-HOURS Seagate ST1000DM003 1ER162-501 1TB 7200RPM 6Gbps 3.5"SATA HDD Hard Drive
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  • $58.88 
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ST340014AS Seagate BARRACUDA 7200.7 40GB 7.2K RPM 1.5Gbps 3.5" SATA Hard Drive
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Seagate Cheetah 15k.7 St3600057ss 600 Gb 3.5 Internal Hard Drive - SAS - 15000-16 Mb Buffer - Ho
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  • $99.00 - $115.00
ST4000NM0023 Seagate 9ZM270 4TB 7200RPM 6Gbps  3.5" SAS HDD Hard Drive
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ST4000NM0023 Seagate 9ZM270 4TB 7200RPM 6Gbps 3.5" SAS HDD Hard Drive
  • Model #: ST4000NM0023-9ZM270-seagate-new-zerohrs
0-HOURS ST600MM0006 Seagate 9WG066 600GB 10K RPM 6Gbps 2.5" SAS HDD Hard Drive
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ST300MM0008 Seagate ENTERPRISE 300GB 10KRPM 12Gbps 2.5" SAS HDD Hard Drive  V8
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ST9320320AS Seagate 488446 MOMENTUS 320GB 5400RPM 3Gbps 2.5" SATA HDD Hard Drive
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Seagate SAVVIO ST600MM0006 9WG066 600GB 10000RPM 6Gbps 2.5" SAS HDD Hard Drive
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0-HOURS ST9300605SS 9TE066 Seagate 300GB 10K RPM 6Gbps 2.5" SAS HDD Hard Drive
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ST9320325AS Seagate 9HH13E 320GB 7200RPM 3Gbps 2.5" SATA Laptop HDD Hard Drive
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ST336752LC Seagate CHEETAH X15 36.7GB 15K U160 SCSI 80-Pin 8MB 3.5" Hard Drive
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Seagate ST3300655SS 921066-002 300GB 15000RPM 3Gbps 3.5" SAS HDD Hard Drive
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Seagate Cheetah 15K.7 ST3450857SS 450 GB Internal Hard Drive (ST3450857SS)
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ST39236LC Seagate 9N3011 9.2GB 7200RPM 80Pin 1MB 3.5" SCSI HDD Hard Drive
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Seagate ST300MM0006 9WE066-175 300GB 10000RPM 6Gbps 2.5" SAS HDD Hard Drive - (ZERO HOURS)
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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