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HP 404396-002 300Gb 15000Rpm Fibre Channel Hard Disk Drive With Tray
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01NN110 01NN124 01NN126 IBM 1.8TB 10000RPM 12Gbps 2.5" SAS SERVER HDD Hard Drive
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01GV020 01GV021 01LK820 IBM 1.2TB 10000RPM 12Gbps 2.5" SAS HDD Hard Drive
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01GV020 01GV021 01LK820 IBM 1.2TB 10000RPM 12Gbps 2.5" SAS HDD Hard Drive
  • Model #: 01GV021-01GV020-ST1200MM0009-drive-n-ibm
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HP 619286-003 600Gb 10000Rpm 2.5Inch Sff Dual Port Sas6Gbits Hard Disk Drive With Tray
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  • $60.19 
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HP 375874-021 1Tb 7200Rpm 3.5Inch Sas Dual Port Hot Swap Midline Hard Drive With Tray
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  • $141.19 
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ST3450857SS Seagate 9FM066-038 450GB 15K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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  • $42.95 
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9ZM178-039 ST3000NM0033 IBM SYSTEM X 3TB 7200RPM 6Gbps 3.5" SATA HDD Hard Drive
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  • $275.00 
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HPE 693647-001 1.20 TB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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  • $273.19 
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LOT OF 10-Dell W330K HUC151414CSS600 146GB 15K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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  • $450.00 
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ST3250820AS Seagate 9BJ13E-033 250GB 7.2K RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $25.96 
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HPE 718302-001 4 TB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
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  • $313.19 
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00WK792 00WC011 00WK898 IBM 2TB 7.2K RPM 12Gbps 2.5" SAS SERVER HDD Hard Drive
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HP 5697-6817 450Gb 15000Rpm Fibre Channel Hard Disk Drive With Tray
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Dell 400-AUVR 2.40 TB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
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  • $218.00 
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Dell 400-ATGU DC S4500 480 GB Solid State Drive - 2.5" Internal - SATA (SATA/600)
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  • $410.09 
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90Y8578 90Y8577 90Y8581 IBM 3TB 7200RPM 6Gbps NL 3.5" SAS SERVER HDD Hard Drive
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ST3450856SS Seagate 9CL066 450GB 15K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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ST9146802SS 9F6066 Seagate SAVVIO 146GB 10K RPM 3Gb/s 2.5"SAS Hard Drive W/Caddy
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  • $22.95 
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ST3160815AS Seagate 9CY132 7200.10 160GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $19.95 
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IBM 42D0519 450GB 15000 RPM SAS 3.5" Internal Hard Drive
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AG691B 461137-B21 MB1000FCWDE HP 1TB 7.2K RPM 4Gb/s LFF 3.5" FATA 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