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Hitachi GST Deskstar 7K400 HDS724040KLAT80 (0A30228) 400GB 7200 RPM 8MB Cache IDE Ultra ATA100 / ATA-6 3.5" Hard Drive Bare Drive
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Hitachi GST Deskstar 7K400 HDS724040KLAT80 (0A30228) 400GB 7200 RPM 8MB Cache IDE Ultra ATA100 / ATA-6 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: HDS724040KLAT80
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  • $90.00 
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Maxtor DiamondMax 10 6B300R0 300GB 7200 RPM 16MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
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Maxtor DiamondMax 10 6B300R0 300GB 7200 RPM 16MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
  • Average Seek Time: 9ms
  • Average Latency: 4.17ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: 6B300R0
Maxtor DiamondMax 10 6L300R0 300GB 7200 RPM 16MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
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Maxtor DiamondMax 10 6L300R0 300GB 7200 RPM 16MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
  • Average Seek Time: 9ms
  • Average Latency: 4.17ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: 6L300R0
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  • $75.10 
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HP 658071-B21 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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HP
HP 658071-B21 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 6Gb/s
  • NAND Flash Memory Type: others
  • Parts: Manufacturers Limited Warranty: 1 Year / Parts Only
  • Model #: 658071-B21
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  • $254.45 
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9TH066-150 Dell 900GB 10K 6G 64MB 2.5" SAS Hard Drive ST9900805SS
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1MJ200-151 4HGTJ Dell ENTERPRISE ST600MP0005 600GB 15K 12G 2.5in SAS Hard Drive For GEN13
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WXPCX Dell ST1200MM0088 ENTERPRISE 1.2TB 10KRPM 12Gbps 2.5"SAS Hard Drive W/0HRS
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Dell 012GYY - Dell 4TB 3.5" Nearline SAS 7.2K 6Gb/s Hard Drive
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DELL
Dell 012GYY - Dell 4TB 3.5" Nearline SAS 7.2K 6Gb/s Hard Drive
  • NAND Flash Memory Type: SLC
  • Average Latency: 6Gb/s
  • Usage: For Enterprise Storage
  • Model #: 012GYY
HUC101212CSS600-DELL DELL 1.2TB 10K 6GBPS SAS 2.5 Hard Drive
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0K20K Dell 4TB SATA 3.5" 7.2k 6Gbps Hot Plug Hard Drive WD4000FYYZ
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DELL
0K20K Dell 4TB SATA 3.5" 7.2k 6Gbps Hot Plug Hard Drive WD4000FYYZ
  • Model #: 0K20K-00K20K-WD4000FYYZ-dell-new-1-1
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  • $169.00 
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Dell 5JH5X - Dell 4TB 3.5" Nearline SAS 7.2K 12Gb/s Hard Drive
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DELL
Dell 5JH5X - Dell 4TB 3.5" Nearline SAS 7.2K 12Gb/s Hard Drive
  • NAND Flash Memory Type: SLC
  • Usage: For Enterprise Storage
  • Model #: 5JH5X
Dell 9Cf26 500Gb 7200Rpm Sata6gbps 3.5Inch 16Mb Buffer Hard Disk Drive
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DELL
Dell 9Cf26 500Gb 7200Rpm Sata6gbps 3.5Inch 16Mb Buffer Hard Disk Drive
  • Average Latency: 6Gb/s
  • Usage: Ideal for Servers
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 9CF26
HGST Ultrastar 7K6000 HUS726020AL4210 (0F22798) 2TB 7200 RPM 128MB Cache SAS 12Gb/s 3.5" Enterprise Hard Drive Bare Drive
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HGST Ultrastar 7K6000 HUS726020AL4210 (0F22798) 2TB 7200 RPM 128MB Cache SAS 12Gb/s 3.5" Enterprise Hard Drive Bare Drive
  • Average Seek Time: 7.6ms
  • Average Write Time: 8ms
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Model #: 0F22798
Hitachi GST Deskstar 7K1000.C HDS721032CLA362 (0A39264) 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $90.19 
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Hitachi GST Deskstar 7K160 HDS721680PLA380 (0Y30005) 80GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Hitachi GST Deskstar 7K160 HDS721680PLA380 (0Y30005) 80GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: HDS721680PLA3800
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  • $70.00 
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HPE 656108-001 1 TB Hard Drive - 2.5" Internal - SATA (SATA/600)
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HP
HPE 656108-001 1 TB Hard Drive - 2.5" Internal - SATA (SATA/600)
  • NAND Flash Memory Type: SLC
  • Model #: 656108-001
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Maxtor MaXLine II 5A300J0 300GB 5400 RPM 2MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
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Maxtor MaXLine II 5A300J0 300GB 5400 RPM 2MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
  • Average Seek Time: 10ms
  • Average Latency: 4.2ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: 5A300J0
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  • $99.10 
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Maxtor DiamondMax Plus 9 6Y250P0 250GB 7200 RPM 8MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
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Maxtor DiamondMax Plus 9 6Y250P0 250GB 7200 RPM 8MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
  • Average Seek Time: 9ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: 6Y250P0
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  • $65.10 
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PGHJG Dell ST300MM0006 300GB 10K 6G 64MB 2.5"SAS SERVER HDD Hard Drive W/(0 HRS)
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IBM 42D0633 146GB 10000 RPM SAS 6Gb/s 2.5" Internal Hard Drive Bare Drive
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IBM 42D0633 146GB 10000 RPM SAS 6Gb/s 2.5" Internal Hard Drive Bare Drive
  • Average Latency: 6Gb/s
  • NAND Flash Memory Type: Hard Drive
  • Model #: 42D0633

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