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9FL066-150 Dell 300GB 15K SAS 6G LFF Hard Drive
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Hitachi GST Deskstar P7K500 HDP725050GLA360 (0A35415) 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Hitachi GST Deskstar P7K500 HDP725050GLA360 (0A35415) 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • NAND Flash Memory Type: Hard Drive
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: HDP725050GLA360
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  • $56.19 
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9JX248-150 Dell 2TB 7.2K SAS 6G LFF Hard Drive
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Dell F617N 15K.7 300GB 15K 3.5" ST3300657SS SAS Hard Drive
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Dell F617N 15K.7 300GB 15K 3.5" ST3300657SS SAS Hard Drive
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Dell 1P7DP - 2TB NL SAS 7.2K 6GBPS 3.5" Hard Drive
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1VE200-150  Dell 1TB 7.2K SAS 12G SFF Hard Drive
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Dell 4HGTJ - Dell 600GB 2.5" SAS 15K 12Gb/s Hard Drive
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DELL
Dell 4HGTJ - Dell 600GB 2.5" SAS 15K 12Gb/s Hard Drive
  • Usage: For Enterprise Storage
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 4HGTJ
R95FV DELL 600GB 10K SAS 2.5" 12Gb/s HDD KIT W/ TRAY
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9WG066-150 Dell 600GB 10K SAS 6G SFF Hard Drive
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HDEBLB2DAB51 Dell 1.2TB 10K SAS 12G SFF Hard Drive
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Seagate Exos X14 12TB 7200 RPM SATA 6Gb/s FastFormat 512e/4Kn 3.5-Inch SED Enterprise Hard Drive (ST12000NM0248)
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  • $563.10 
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Dell 4TB 3.5" Nearline SAS 7200 RPM 12Gb/s Hard Drive
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DELL
Dell 4TB 3.5" Nearline SAS 7200 RPM 12Gb/s Hard Drive
  • NAND Flash Memory Type: SLC
  • Average Latency: 12Gb/s
  • Model #: 400-ASHY
ST32000444SS-DEL SEAGATE CONSTELLATION ES 2TB 7200RPM 6GBPS LFF SAS SC HARD DRIVE
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  • $68.95 
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9RZ268-150 Dell 1TB 7.2K SAS 6G SFF Hard Drive
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9YZ264-150 Dell 1TB 7.2K SAS 6G LFF Hard Drive
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Western Digital RE+ WD6005FRPZ 6TB 5760 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive – Bare Drive
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Western Digital
Western Digital RE+ WD6005FRPZ 6TB 5760 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive – Bare Drive
  • Height (maximum): 26.1mm
  • Width (maximum): 101.6mm
  • Length (maximum): 147mm
  • Parts: Limited 5 Years
  • Model #: WD6005FRPZ
HDEAE02DAA51 Dell 300GB 15K SAS 6G SFF Hard Drive
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1MG200-151 Dell 300GB 15K SAS 12G SFF Hard Drive
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Dell 400-ALRV - Dell 4TB 3.5" SAS 7.2K 12Gb/s Hard Drive
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DELL
Dell 400-ALRV - Dell 4TB 3.5" SAS 7.2K 12Gb/s Hard Drive
  • Average Latency: 3Gb/s
  • Model #: 400-ALRV
ST3300657SS Seagate 300GB SAS 3.5" LFF 6G 15K Hard Drive 45E7953
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  • $51.96 
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HDEAE00DAA51 Dell 600GB 15K SAS 6G SFF Hard Drive
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0B34157 Dell 1.2TB 10K SAS 12G SFF Hard Drive
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1FE200-157 Dell 900GB 10K SAS 12G SFF Hard Drive
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Dell 400-ATKN 4 TB 3.5" SATA 7200RPM Hard Drive
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Dell GC828 146 GB Hard Drive - 3.5" Internal - SCSI (Ultra320 SCSI)
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Seagate MOMENTUS ST9500325AS 500GB 5400RPM 3Gbps 2.5" SATA Laptop Hard Drive
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  • $34.96 
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9YZ268-150 Dell 2TB 7.2K SAS 6G LFF Hard Drive
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1VD200-150 Dell 2TB 7.2K SAS 12G SFF Server Hard Drive
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9ZM273-150 Dell 1TB 7.2K SAS 6G LFF Hard Drive
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Western Digital Caviar RE WD1600YS 160GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Used - Like New Western Digital Caviar RE WD1600YS 160GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Latency: 4.2ms
  • Parts: 5 years limited
  • Labor: 5 years limited
  • Model #: WD1600YS
HDEAA00DAA51 Dell 300GB 15K SAS 6G SFF Hard Drive
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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