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2X1CJ 160GB 7200RPM SATA 2.5Inch Dell Hard Drive
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Dell 740YX 1TB NL SAS 7.2K 6GBPS 3.5" Drive 9YZ264-150 ST1000NM0001
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  • $18.00 
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NJG52 500GB 5400RPM SATA 2.5Inch Dell Hard Drive
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  • $18.49 
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WD1600AAJS Western Digital U717D 160GB 7200RPM 3Gbps 3.5" SATA Hard Drive
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  • $18.95 
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WD2500AAJS Western Digital BLUE 250GB 7200RPM 3Gb/s 8MB 3.5" SATA Hard Drive
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WD1601ABYS Western Digital FM569 160GB 7.2K RPM 3Gbps 3.5" SATA HDD Hard Drive
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WD1600JS Western Digital 160GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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Hitachi HTS545025B9A300 250GB 5.4K RPM 3Gb/s 2.5" SATA LAPTOP HDD Hard Drive
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HGST ULTRASTAR 7K4000 HUS724030ALS640 HARD DRIVE - INTERNAL (0B26886)
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  • $19.44 
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KJ5JD 160GB 5400RPM SATA 2.5Inch Dell Hard Drive
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  • $19.49 
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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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652597-S21 512544-003 HP 72GB 15K RPM 3Gb/s 2.5" SAS SP HOTSWAP Hard Drive
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  • $19.95 
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HTS723225A7A365 HITACHI 250GB 7200RPM 300MBPS INTERNAL HARD DRIVE
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HP652605-B21 627114-001 146GB 15000RPM 6Gbps 2.5" SAS HDD Hard Drive W/Caddy
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418367-B21 507283-001 HP 146GB 10000RPM 6Gbps 2.5" SAS SERVER HDD Hard Drive
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DELL 300GB 10K 6G SFF SAS Hard Drive 745GC
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Dell KH674 80 GB Hard Disk Drive - 5400 RPM - SATA - 2.5 Inches
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ST3250310AS Seagate 9EU132 BARRACUDA 250GB 7200RPM 3Gbps 3.5"SATA HDD Hard Drive
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X464K WD1602ABKS Dell 160GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive - (0 HOURS)
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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:

Casey H.
7/21/2025 4:10:23 PM
My "Go To" for HDs

“ These are my "go to" drives for not only internal system drives, but also offloading external storage; using a 4 Bay USB 3.x Drive Cage. ”

Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives Bare Drive - OEM