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EG0600JEMCV HPE 600GB 10K 12G SFF SAS SC Hard Drive
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HP EF0300FARMU 516810-001 300GB 6G sas 3.5" dual port hard drive 9FL066-035
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  • $102.00 
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HP 300GB 6G SAS 15K 3.5 DP SC Ent Hard Drive HDD 700937-001 (707568-B21)
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  • $102.00 
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HPE 764904-B21 400 GB Solid State Drive - 2.5" Internal - PCI Express
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  • $299.99 
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Dell 400-AJQD 1.2TB 10000 RPM SAS 12Gb/s 2.5" Internal Hard Drive
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  • $85.00 
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HPE 900 GB Hard Drive 2.5" Internal SAS 12Gb/s SAS R0Q53A
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HPE 900 GB Hard Drive 2.5" Internal SAS 12Gb/s SAS R0Q53A
  • NAND Flash Memory Type: Hard Drive
  • Model #: R0Q53A
seagate barracuda ata iv 40gb udma/100 7200rpm 2mb ide hard drive
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  • $50.00 
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Seagate Video ST1000VM002 1TB 5900 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Refurbished Seagate Video ST1000VM002 1TB 5900 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Average Write Time: 9ms
  • Average Latency: 5.1ms
  • Model #: ST1000VM002
Seagate ST173404LC Cheetah 73 ST173404LC 73.40 GB Hard Drive - 3.5" Internal - SCSI (Ultra160 SCSI)
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  • $199.95 
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Hewlett Packard Enterprise R0Q69A internal hard drive 3.5" 8000 GB SAS
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  • $2,441.00 
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Lenovo 00YK013 internal hard drive 2.5" 300 GB SAS
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960GB SSD SATA MIXED USE 6GBPS
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  • $1,378.85 
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ST500VT000 Seagate 1DK142-502  VIDEO 500GB 5.4K RPM 3Gb/s 2.5" SATA Hard Drive
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HP 4 TB 3.5" Internal Hard Drive
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HP
HP 4 TB 3.5" Internal Hard Drive
  • NAND Flash Memory Type: SLC
  • Model #: 861678-B21
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  • $608.41 
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ST1200MM0009 Seagate EXOS 10E2400 1.2TB 10K RPM 12Gb/s 2.5" SAS HDD Hard Drive
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  • $109.88 
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ST3500418AS Seagate 9SL142 BARRACUDA 500GB 7.2KRPM 3Gb/s 3.5"SATA HDD Hard Drive
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  • $75.00 
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0-HOURS ST91000640NS 9RZ168 Seagate 1TB 7.2K RPM 6Gb/s 2.5" SATA HDD Hard Drive
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ST3500413AS Seagate 9YP142 BARRACUDA 500GB 7.2KRPM 6Gb/s 3.5"SATA HDD Hard Drive
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ST500DM002 Seagate 1BD142-541 DESKTOP 500GB 7200RPM 6Gbps 3.5"SATAHDD Hard Drive
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  • $45.87 
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600GB THINKSYSTEM 2.5IN 15K SAS
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Maxtor MaXLine Plus II 7Y250P0 250GB 7200 RPM 8MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
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Maxtor MaXLine Plus II 7Y250P0 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 #: 7Y250P0
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  • $99.95 
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HPE 857648-B21 10TB 3.5" SATA 7200rpm Internal Hard Drive - Hot Pluggable
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HPE 857648-B21 10TB 3.5" SATA 7200rpm Internal Hard Drive - Hot Pluggable
  • NAND Flash Memory Type: Hard Drives
  • Parts: 1 Year
  • Model #: 857648-B21

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