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WD Red Pro 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - WD161KFGX
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WD Red Pro 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - WD161KFGX
  • Brand: WD
  • Series: Red Pro
  • Capacity: 16TB
  • RPM: 7200 RPM
  • Model #: WD161KFGX
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HPE 605832-001 500 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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HP
HPE 605832-001 500 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
  • NAND Flash Memory Type: SLC
  • Model #: 605832-001
LOT OF 10-Dell EXOS G2G54 ST1200MM0099 1.2TB 10KRPM 12Gbps 2.5"SAS HDD HardDrive
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  • $775.00 
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Dell 400-ATJN / K41G1 1.2TB 3.5” 10K RPM 512n Hybrid SAS HDD Kit X7K8W / Y004G
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  • $195.00 
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401-AASQ DELL ENTERPRISE CLASS 1.2TB 10K SAS 2.5" 12Gb/s HDD KIT
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  • $195.00 
400-AFTY DELL ENTERPRISE CLASS 1.2TB 10K SAS 2.5" 12Gb/s HDD KIT
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  • $195.00 
401-AASM DELL ENTERPRISE CLASS 1.2TB 10K SAS 2.5" 12Gb/s HDD KIT
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  • $195.00 
400-AHIW Dell - 8TB 7.2K 3.5" SAS HD
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DELL
400-AHIW Dell - 8TB 7.2K 3.5" SAS HD
  • Model #: 8WWE8-00-B01BT-1
HPE 627114-001 EH0146FBQDC 146 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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HP
HPE 627114-001 EH0146FBQDC 146 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
  • Flash Memory Capacity: 146
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 627114-001
49Y2003 IBM 600-GB 10K 2.5 SAS Slim-HS HDD
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401-ABHS T93C2 2.4TB 10K SAS 3.5" 12Gb/s Hard Drive replacement hybrid kit
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  • $550.00 
Dell - Hard drive - 2.4 TB - internal - 2.5-inch (in 3.5-inch carrier) - SAS 12Gb/s - 10000 rpm
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  • $550.00 
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HPE R0Q62A 14 TB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS)
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Fujitsu MBD2300RC MBD2 RC MBD2300RC 300 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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Hitachi HTS723232A7A364 P/N: 0A79646 MLC: DA3735 320GB
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  • $87.26
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  • $58.00 
  • Save: 33%
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400-AIRE DELL 8TB 7.2K SAS 3.5" 12Gb/s HDD KIT For 13th Generation Servers
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  • $500.00 
400-AHIZ DELL 8TB 7.2K SAS 3.5" 12Gb/s HDD KIT For 13th Generation Servers
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  • $500.00 
400-AHJB DELL 8TB 7.2K SAS 3.5" 12Gb/s HDD KIT For 13th Generation  Servers
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  • $500.00 
HPE 870755-B21 300 GB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS)
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HPE 870755-B21 300 GB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS)
  • NAND Flash Memory Type: Hard Drive
  • Model #: 870755-B21
HPE 652625-001 146 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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HP
HPE 652625-001 146 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
  • Flash Memory Capacity: 146
  • NAND Flash Memory Type: SLC
  • Features: SAS,15000RPM
  • Parts: 30 DAYS WARRANTY
  • Model #: 652625-001
Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5" Internal SATA SATA/600
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Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5" Internal SATA SATA/600
  • NAND Flash Memory Type: Hard Drive
  • Model #: ST18000VE002
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"Dell 400-AJPI FY96C 1.2TB 2.5"" SFF 12Gbps 10K RPM 12 Gen SAS HDD G176J Kit"
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  • $195.00 
LOT OF 10 - HPE 791034-B21 791055-001 1.8TB 10K RPM 12Gbps 2.5" SAS Hard Drive
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  • $900.00 
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LOT OF 10 - Dell 1P7DP ST2000NM0023 2TB 7200RPM 6Gbps 3.5" SAS SERVER Hard Drive
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  • $950.00 
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0F9W8 DELL 4TB 7.2K SAS 3.5" 12Gb/s HDD v5 14G 512n FACTORY SEALED
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  • $325.00 
Dell - Hard drive - 2.4 TB - hot-swap - 2.5-inch (in 3.5-inch carrier) - SAS 12Gb/s - 10000 rpm
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  • $600.00 
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"Dell 400-ADKK 4TB 3.5"" 6Gbps 7.2K RPM Near Line HS SAS HDD Kit F238F"
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  • $325.00 
Dell Computer 462-6785 10000 Rpm Hd 1.2tb Serial Att Int Scsi Hot Plug 342-5521
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  • $195.00 
HP 507613-002 MB2000FAMYV 2 TB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
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HP 507613-002 MB2000FAMYV 2 TB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
  • NAND Flash Memory Type: Hard Drive
  • Model #: 507613-002
Dell 4TB SAS 12Gb/s 3.5" HDD PowerEdge 12G 13G 400-ALRT (CHPG2) R430 R720xd R730
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DELL
Dell 4TB SAS 12Gb/s 3.5" HDD PowerEdge 12G 13G 400-ALRT (CHPG2) R430 R720xd R730
  • NAND Flash Memory Type: SLC
  • Average Latency: 3Gb/s
  • Usage: For Enterprise Storage
  • Model #: 400-ALRT
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  • $325.00 

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