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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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WD Ultrastar DC HC530 14TB SATA 3.5-Inch Enterprise HDD  WUH721414ALE604
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  • $594.45 
  • Free Shipping
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HP 652605-B21 653950-001 627114-001 146GB 15000RPM 6Gbps 2.5" SAS HDD Hard Drive
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  • $254.45 
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Dell 4 TB 3.5" Internal Hard Drive
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DELL
Dell 4 TB 3.5" Internal Hard Drive
  • Average Latency: 6Gb/s
  • Usage: For Enterprise Storage
  • Model #: DTK38
  •  
  • $325.00 
HUC101812CS4200  0B29920 HGST 1.2TB 10000RPM 12Gbps 2.5" SAS HDD Hard Drive
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Dell 028J2 - Dell 4TB 3.5" SAS 7.2K 6Gb/s Hard Drive
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DELL
Dell 028J2 - Dell 4TB 3.5" SAS 7.2K 6Gb/s Hard Drive
  • Average Latency: 12Gb/s
  • Model #: 028J2
  •  
  • $325.00 
Dell FV504 - Dell 4TB 3.5" SAS 7.2K 6Gb/s Hard Drive
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  • $325.00 
HGST HD 0B35914 6TB 3.5 256MB 7200RPM SAS 12Gb s 4Kn Ultrastar 7K6 Bare
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HGST HD 0B35914 6TB 3.5 256MB 7200RPM SAS 12Gb s 4Kn Ultrastar 7K6 Bare
  • NAND Flash Memory Type: Hard Drive
  • Usage: For Enterprise Storage
  • Model #: 0B35914
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  • $175.00 
  • $15.00 Shipping
34XWC DELL 1.2TB 10K SAS 3.5 HDD 6Gbps
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DELL
34XWC DELL 1.2TB 10K SAS 3.5 HDD 6Gbps
  • Model #: 7c6-456199000252361
  •  
  • $195.00 
Dell 342-5296 - 4TB 3.5" SAS 7.2K 6Gb/s HS Hard Drive
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DELL
Dell 342-5296 - 4TB 3.5" SAS 7.2K 6Gb/s HS Hard Drive
  • Average Latency: 12Gb/s
  • Usage: Ideal for Servers
  • Model #: 342-5296
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  • $325.00 
Dell 400-ALNY 4TB 3.5" 7200rpm SAS Internal Hard Drive
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  • $325.00 
FUJITSU Mbb2073Rc 73Gb 10000Rpm 16Mb Buffer Sas3Gbits 2.5Inch Hard Drive
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  • $146.53
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  • $39.00 
  • Save: 73%
  • $15.00 Shipping
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HPE 8TB 12G SAS 7.2K LFF 512e SC MDL HDD
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HP
HPE 8TB 12G SAS 7.2K LFF 512e SC MDL HDD
  • RPM: 7200 RPM
  • Form Factor: 3.5"
  • Model #: 819201-B21
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Dell 400-AEFB - Dell 1TB 3.5" SATA 7.2K 6Gb/s Hard Drive
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DELL
Dell 400-AEFB - Dell 1TB 3.5" SATA 7.2K 6Gb/s Hard Drive
  • Features: Hard Drive
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 400-AEFB
HP MSA 8TB 12G SAS 7.2K 3.5IN 512E H
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HP
HP MSA 8TB 12G SAS 7.2K 3.5IN 512E H
  • NAND Flash Memory Type: SLC
  • Average Latency: 12Gb/s
  • Model #: M0S90A
Dell TDNP7 Kioxia 1.92TB RI SAS 12Gb/s 2.5" SSD KPM5XRUG1T92 SDFBE85DAB01
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Dell 3C46W - 1TB 3.5" SATA 7.2K 6Gb/s HS Hard Drive
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DELL
Dell 3C46W - 1TB 3.5" SATA 7.2K 6Gb/s HS Hard Drive
  • Usage: Ideal for Servers
  • Model #: 3C46W
HGST 0B35948 4Tb 3.5 Inch 256Mb 7200Rpm Sata Ultra 4Kn Secure Erase 7K6 Bare
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  • $229.00 
  • $15.00 Shipping
HPE MSA Enterprise 14TB SAS 7.2K LFF 3.5 M2 HDD (P13252-001)
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400-AHIW DELL 8TB 7.2K SAS 3.5" 12Gb/s HDD KIT For 13th Gen PowerEdge Servers
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  • $500.00 
HPE EG001200JWJNK Digitally Signed 512n 1.2TB 10k SAS 12g Sff Sc Hdd F/s
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Dell 400-AEFD Hard Drives
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DELL
Dell 400-AEFD Hard Drives
  • NAND Flash Memory Type: Others
  • Model #: 400-AEFD
Eg0300fcsph Hewlett-Packard 300Gb Hot-Swap Dual-Port Sas 10 000 Rpm 6
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  • $184.45 
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MSA 2.4TB 12G SAS 10K 2.5IN SFF
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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