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BUFFALO 4TB Replcement  HD TeraStation Model OP-HD4.0BST-3Y
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  • $219.99 
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Seagate Exos X20 ST20000NM007D 20TB 7200 RPM 256MB Cache 3.5" Internal Hard Drive
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Seagate
Used - Good Seagate Exos X20 ST20000NM007D 20TB 7200 RPM 256MB Cache 3.5" Internal Hard Drive
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Model #: ST20000NM007D
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  • $577.99 
  • $11.20 Shipping
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WD Purple WD33PURZ 3 TB Hard Drive 3.5" Internal SATA SATA/600 5400rpm
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Western Digital
Refurbished WD Purple WD33PURZ 3 TB Hard Drive 3.5" Internal SATA SATA/600 5400rpm
  • Brand: WD
  • Capacity: 3TB
  • RPM: 5400 RPM
  • Interface: SATA 6.0Gb/s
  • Model #: WD33PURZ
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  • $144.99 
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Dell G14 118000275 8TB 7.2K RPM SAS 12Gb/s 4Kn 256MB 3.5in Enterprise Hard Drive
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DELL
Dell G14 118000275 8TB 7.2K RPM SAS 12Gb/s 4Kn 256MB 3.5in Enterprise Hard Drive
  • Brand: Dell
  • Series: Generation 14
  • Capacity: 8TB
  • RPM: 7200 RPM
  • Model #: HUH721008AL4205-DELLG14
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  • $259.00 
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Dell G13 118000275 8TB 7.2K RPM SAS 12Gb/s 4Kn 256MB 3.5in Enterprise Hard Drive
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DELL
Dell G13 118000275 8TB 7.2K RPM SAS 12Gb/s 4Kn 256MB 3.5in Enterprise Hard Drive
  • Brand: Dell
  • Series: Generation 13
  • Capacity: 8TB
  • RPM: 7200 RPM
  • Model #: HUH721008AL4205-DELLG13
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  • $259.00 
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Seagate SkyHawk AI ST24000VE002 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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Seagate
Used - Very Good Seagate SkyHawk AI ST24000VE002 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST24000VE002
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  • $705.79 
  • $11.20 Shipping
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Dell 342-0452 300GB 15000 RPM SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $80.19 
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Seagate SkyHawk ST10000VX0008 10TB 3.5" SATA 7200rpm Internal Hard Drive
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  • $499.10 
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TOSHIBA MBF230LRC 300GB 10025 RPM 16MB Cache SAS 6Gb/s 2.5" Enterprise Hard Drive
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TOSHIBA MBF230LRC 300GB 10025 RPM 16MB Cache SAS 6Gb/s 2.5" Enterprise Hard Drive
  • Height (maximum): 15mm
  • Width (maximum): 69.85 mm
  • Length (maximum): 100.45 mm
  • Model #: MBF230LRC
Dell 342-2976 900GB 10000 RPM 64MB Cache Serial Attached SCSI 2 2.5" Internal Hard Drive Bare Drive
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DELL
Dell 342-2976 900GB 10000 RPM 64MB Cache Serial Attached SCSI 2 2.5" Internal Hard Drive Bare Drive
  • Average Latency: 12Gb/s
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 342-2976
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  • $55.19 
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WESTERN DIGITAL - IMSOURCING WD5000BPKX 500GB 7.2K 16MB SATA 6G 2.5IN
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  • $65.00 
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DELL ENTERPRISE ACCESSORIES 400-AFYB 1TB SATA 6GBPS 7.2K RPM 3.5IN
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Seagate Cheetah 15K.4 ST373454FC 74GB 15000 RPM 8MB Cache Fibre Channel 3.5" Hard Drive Bare Drive
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Seagate
Seagate Cheetah 15K.4 ST373454FC 74GB 15000 RPM 8MB Cache Fibre Channel 3.5" Hard Drive Bare Drive
  • Average Seek Time: 3.5ms
  • Average Write Time: 4.0ms
  • Average Latency: 2ms
  • Parts: 5 years limited
  • Model #: ST373454FC
LOT OF 10 - FNW88 ST1000NM0023 Dell 1TB 7.2K RPM 6Gbps 3.5" SAS HDD Hard Drive
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  • $565.00 
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TOSHIBA MBE2147RC 147GB 15000 RPM 16MB Cache SAS 6Gb/s 2.5" Enterprise Hard Drive Bare Drive
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TOSHIBA MBE2147RC 147GB 15000 RPM 16MB Cache SAS 6Gb/s 2.5" Enterprise Hard Drive Bare Drive
  • Average Seek Time: 2.9ms
  • Average Write Time: 3.4ms
  • Average Latency: 2ms
  • Parts: 2 yrs
  • Model #: MBE2147RC
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  • $58.09 
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HP Midline 458928-B21 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
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HP Midline 458928-B21 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
  • Average Seek Time: 8.5ms
  • Average Latency: 3Gb/s
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: 458928-B21
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  • $60.95 
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Seagate Exos X14 ST14000NM0048 14 TB Hard Drive - 3.5"" Internal - SAS (12Gb/s SAS) - 7200rpm - 512e/4Kn Format
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Seagate
Seagate Exos X14 ST14000NM0048 14 TB Hard Drive - 3.5"" Internal - SAS (12Gb/s SAS) - 7200rpm - 512e/4Kn Format
  • Brand: Seagate
  • Capacity: 14TB
  • RPM: 7200 RPM
  • Interface: SAS 12Gb/s
  • Model #: ST14000NM0048
  • $521.06 - $532.11
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HP QK703A 3TB 7200 RPM SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $105.09 
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HP 765424-B21 600 GB 3.5" Internal Hard Drive
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HP 765424-B21 600 GB 3.5" Internal Hard Drive
  • Type: Hard Drive
  • Specifications: Drive Interface Standard: 12Gb/s SAS Drive Interface: SAS Drive Type: Internal Drive Width: 3.5" Product Type: Hard Drive Rotational Speed: 15000 rpm Storage Capacity: 600 GB Wireless LAN: No
  • Model #: 765424-B21
HP StorageWorks P2000 AW556A 2TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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HP
HP StorageWorks P2000 AW556A 2TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 3Gb/s
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: AW556A
  • $300.00
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  • $158.19 
  • Save: 47%
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HP StorageWorks P2000 AP861A 1TB 7200 RPM SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
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HP
HP StorageWorks P2000 AP861A 1TB 7200 RPM SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 6Gb/s
  • NAND Flash Memory Type: Hard Drive
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: AP861A
  • $141.57
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  • $129.00 
  • Save: 8%
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HPE 785069-B21 900 GB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
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HP
HPE 785069-B21 900 GB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
  • NAND Flash Memory Type: SLC
  • Usage: Ideal for Servers
  • Model #: 785069-B21
HP 454146-S21 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $81.19 
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Hitachi GST Deskstar 7K1000.C 0A39261 160GB 7200 RPM SATA 3.0Gb/s 3.5" HDS721016CLA382 Internal Hard Drive
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Dell 342-2082 600GB 15000 RPM SAS 3.5" Serial Attached SCSI Hot Plug Hard Drive Bare Drive
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DELL
Dell 342-2082 600GB 15000 RPM SAS 3.5" Serial Attached SCSI Hot Plug Hard Drive Bare Drive
  • Average Latency: 12Gb/s
  • Features: Increase storage capacity of your system with 600 GB Hotplug Hard Drive from Dell. It offers rotational speed of up to 15,000 RPM that provides fast disk access. Moreover, its SAS interface delivers enhanced data transfer speed. This product has been tested and validated on Dell systems. It is supported
  • Usage: Ideal for Servers
  • Model #: 342-2082
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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