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HTS725032A7E635 0J38653 HGST 320GB 7.2K RPM 6Gb/s 2.5" SATA LAPTOP Hard Drive
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HUA722050CLA330 Hitachi 0F11000 500GB 7.2K 3Gbps 32MB 3.5" SATA HDD Hard Drive
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WD2502ABYS-18B7A0 Western Digital 250GB 7.2K RPM 3Gbps 3.5" SATA Hard Drive
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XX517 Dell HUS154545VLS300 450GB 15K RPM 3Gb/s 3.5" SAS SERVER HDD Hard Drive
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H962F WD2502ABYS Dell 250GB 7200RPM 3Gbps 3.5" SATA ENTERPRISE Hard Drive
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32P0727 32P0730 33P3391 IBM 73.4GB 10K Ultra320 3.5" HS SCSI Hard Drive
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Dell 0CM318 CM318 146GB 10K 3G 16MB 2.5in SAS Hard Drive ST9146802SS
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9WG066-150 Dell 600GB 10K SAS 6G SFF Hard Drive
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H8799 DELL 73GB 15K SAS 3.5 HDD 3GBPS
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DELL
H8799 DELL 73GB 15K SAS 3.5 HDD 3GBPS
  • Model #: dc1-790400000253208
Dell 829T8 2TB NL SAS 7.2K 6GBPS 3.5" Drive MG03SCA200 HDEPC02DLA51
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ST900MM0006 Seagate 9WH066 900GB 10K RPM 6Gb/s 2.5"SAS HDD Hard Drive - (0 HRS)
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  • $42.00 
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MBA3147RC - Fujitsu 146GB 15000 RPM 16MB Buffer 3.5 Inch Serial Attached SCSI Hard Drive.
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ST9300603SS Seagate 9FK066-008 300GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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120GB 5400 RPM Hard Drives
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HP 500GB 5400 RPM SATA 2.5 Inch Hard Drive - 512557-002
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17R6149 COMPAQ 300GB 10000RPM FC HOT SWAP HARD DRIVE
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Hitachi Hard Drive 600GB 15K 3.5"FC w/o Carrier HUS156060VLF400
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Dell 146 GB 3.5" Internal Hard Drive - OEM
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Seagate ST1200MM0007 1DA200-038 1.2TB 10K 6G 64MB 2.5" SAS Hard Drive HDD V7
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ST3450857SS Seagate 9FM066-038 450GB 15K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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ST3500413AS 9YP142-304 Seagate 500GB 7200RPM 6Gbps 3.5"SATA HDD Hard Drive
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WD3200AVVS Western Digital AV-GP 320GB 5.4K RPM 3Gbps 3.5" SATA Hard Drive
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Dell CHEETAH R749K ST3450857SS 450GB 15K RPM 6Gb/s 3.5"SAS SERVER HDD Hard Drive
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HDS721680PLA380 Hitachi 02G596 DESKSTAR 80GB 7.2K RPM 3Gbps 3.5" SATA 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