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656107-001 655708-B21 HP 500GB 7.2K RPM 6Gb/s 2.5" SATA SERVER HDD Hard Drive G8
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627985-001 HP 320GB 5.4K RPM 3Gb/s 2.5" SATA Laptop HDD Hard Drive
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HP
627985-001 HP 320GB 5.4K RPM 3Gb/s 2.5" SATA Laptop HDD Hard Drive
  • Model #: 627985-001-HTS543232A7A384-hp-new-ATP
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  • $54.88 
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9RZ264-039 IBM ST9500620SS 500GB 7.2K RPM 6Gb/s 2.5" SAS SERVER HDD Hard Drive
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  • $138.95 
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8YWH3 Dell 2.4TB SAS 2.5" SFF 10K RPM 12Gb/s SED FIPS Server HDD Hard Drive 08YWH3
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  • $555.00 
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EH0300FCBVC652611-B21 652625-002 HP 300GB 15K RPM 6Gb/s 2.5" SFF SAS Hard Drive
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  • $73.88 
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DELL W347K 600GB ST3600057SS 3.5" 15K SAS Spare T710 R710 R610 MD1200 R510 R410 R720 R720XD R620 R520 R420
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00Y2431 00Y2505 00Y5721 IBM 900GB 10K RPM 6Gb/s 2.5" SAS SERVER HDD Hard Drive
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42D0637 42D0638 42D0641 IBM 300GB 10K RPM 6Gb/s 2.5" SAS Hard Drive W/ZERO HOURS
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  • $58.88 
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ST4000NM0023 4TB 7.2K SAS 3.5" 6G HDD for Dell  T20 T100 T105 T110
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  • $175.00 
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  • $70.00 - $175.00
DELL H8DVC-KIT DELL 300GB 15K SAS 2.5 6Gbps 64MB HDD W/G176J TRAY
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MBA3147RC - Fujitsu 146GB 15000 RPM 16MB Buffer 3.5 Inch Serial Attached SCSI Hard Drive.
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  • $42.00 
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00NA232 00NA231 00NA235 LENOVO 600GB 15K RPM 12Gb/s 2.5" SAS HDD Hard Drive
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HP 492620-B21 518194-002 300GB 10000RPM 3Gb/s Dual Port 2.5" SAS Hard Drive
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  • $46.88 
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32P0731 32P0728 24P3714 IBM 146.8GB 10K U320 8MB 80-Pin SCSI 3.5" Hard Drive.
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EG0600FCVBK 581286-B21 693569-003 HPE 600GB 10K 6Gb/s 2.5" SFF SC SAS Hard Drive
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  • $69.88 
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HPE 759548-001 600 GB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
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HP
HPE 759548-001 600 GB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
  • NAND Flash Memory Type: SLC
  • Model #: 759548-001
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  • $129.10 
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748794-002 XP0064GDZMF HP 64GB 6G SATA 2242 MLC M.2 SSD-ADA HARD DRIVE
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  • $99.89 
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LOT OF 10 - Dell 36RH9 ST1200MM0088 1.2TB 10000RPM 6Gbps 2.5" SAS HDD Hard Drive
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  • $540.00 
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Seagate Cheetah ST373307LW 74GB 10000 RPM 8MB Cache SCSI Ultra320 68pin 3.5" Hard Drive Bare Drive
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Seagate
Used - Like New Seagate Cheetah ST373307LW 74GB 10000 RPM 8MB Cache SCSI Ultra320 68pin 3.5" Hard Drive Bare Drive
  • Average Seek Time: 4.7ms
  • Average Write Time: 5.2ms
  • Average Latency: 2.99ms
  • Parts: 5 years limited
  • Model #: ST373307LW
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  • $170.10 
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IBM 00AJ301 00AJ300 00AJ304 600GB 15K RPM 6Gb/s 2.5" SAS SERVER HDD Hard Drive
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HPE 693721-001 4 TB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
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HP
HPE 693721-001 4 TB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
  • NAND Flash Memory Type: SLC
  • Average Latency: 6Gb/s
  • Model #: 693721-001
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  • $114.00 
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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