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39XRY 16TB 7.2K SATA 3.5 6Gb/s HARD DRIVE UPGRADE KIT
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  • $800.00 
P13237-001 HP 1.92TB 2.5" SAS 12G RI M2 SSD KPM51RUG1T92 SDFBE05JAA01MSA
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HP
P13237-001 HP 1.92TB 2.5" SAS 12G RI M2 SSD KPM51RUG1T92 SDFBE05JAA01MSA
  • Model #: P13237-001-hp-KPM51RUG1T92-SDFBE05JAA01
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  • $1,250.00 
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0M40TH ST8000NM0185 Dell 8TB 7.2K RPM 12Gb/s 3.5" SAS HDD Hard Drive Refurbished
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  • $380.00 
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3PRF0 6TB 7200RPM SAS 3.5Inch Dell Hard Drive
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  • $299.00 
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ST4000NM0115 Seagate ENT 4TB 3.5" SATA 7.2K 6Gb/s Hard Drive
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Seagate
ST4000NM0115 Seagate ENT 4TB 3.5" SATA 7.2K 6Gb/s Hard Drive
  • Model #: ST4000NM0115-1YZ107-005-n-seagate-atp
WD5003ABYX-18WERA0 Dell 500GB 7.2K SAS 6G LFF Hard Drive
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0B24496 Dell 600GB 15K SAS 6G LFF Hard Drive
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655710-B21 656108-001 HP 1TB 7.2K RPM 6Gbps 2.5" MDL SATA Hard Drive W/Caddy
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  • $69.95 
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R95FV DELL 600GB 10K SAS 2.5" 12Gb/s HDD KIT W/ TRAY
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LOT OF 10 - Dell 55H49 ST3000NM0023 3TB 7.2K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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  • $899.00 
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PGHJG ST300MM0006 Dell 300GB 10K RPM 6Gb/s 2.5" SAS Hard Drive W/(ZERO HOURS)
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  • $44.00 
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Dell 0W347K W347K 600GB 15K 6Gbps 3.5" SAS HARD DRIVE ST3600057SS
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FVX7C DELL 2TB 7.2K SAS 2.5" 12Gb/s HDD W/TRAY
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9ZM270-150 Dell 4TB 7.2K SAS 6G LFF Hard Drive
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4HGTJ DELL 600GB 15K SAS 2.5 HDD 12Gbps
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DELL
4HGTJ DELL 600GB 15K SAS 2.5 HDD 12Gbps
  • Model #: d9b-029351000252445
HUC101812CS4200  0B29920 HGST 1.2TB 10000RPM 12Gbps 2.5" SAS HDD Hard Drive
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Dell 400-AJQD 1.2TB 10000 RPM SAS 12Gb/s 2.5" Internal Hard Drive
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  • $85.00 
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Dell 161-BCBX 2.4TB SAS 12Gbps 10KRPM 512e 2.5in ISE Hot-Plug Hard Drive
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  • $341.55 
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WD3000HLFS Western Digital VELOCIRAPTOR 300GB 10K 3G 16MB 3.5in SATA Hard Drive
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  • $56.88 
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Dell 9W5WV ST91000640SS 1TB 7.2K 2.5" 6G SAS HARD DRIVE w/G176J
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MB4000JVYZQ HPE 4TB 12G MIDLINE 7.2K LFF SAS Hard Drive
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ST500LM034 Seagate 2GH17A 500GB 7.2K RPM 6Gb/s 2.5" SATA Laptop HDD Hard Drive
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WD2500HHTZ Western Digital Raptor 250GB 10000RPM 6Gbps 3.5" SATA HDD HARD DRIVE
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  • $48.00 
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Dell PX05SRB384Y XCRDV Dell 3.84TB 12Gb/s RI SAS SSD 2.5" Drive
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  • $675.00 - $1,400.00
FVX7C 0FVX7C Dell ST2000NX0433 2TB 7.2K RPM 12Gb/s 2.5"SAS SERVER HDD 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:

Perry K.
3/26/2026 7:05:57 AM
Seagate Barracuda 2TB Hard Drive

“ Received and installed new Seagate Hard Drive in older Dell Inspiron PC. ”

Seagate BarraCuda ST2000DM008 2TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
Anonymous
1/22/2026 4:08:37 PM
Perfect 28TB NAS Drives Great For UGREEN Plex

“ One drive is my primary Plex/media volume, the other is my internal backup. ”

Seagate IronWolf Pro ST28000NT000 28TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive