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Dell RK1PP - 1TB 5.4K SATA 2.5Inch Hard Drive
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  • $33.49 
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504015-001 Hp 72Gb 10K Rpm Hot Plug Sas 2.5 Dual Port Hard Drive
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ST1000DM003 Seagate 9YN162 1TB 7.2K RPM 6Gb/s 3.5" SATA DESKTOP HDD Hard Drive
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375861-B21 504015-001 HP 72GB 10K RPM 3Gb/s DP 2.5" SAS SERVER HDD Hard Drive
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  • $33.88 
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HPE 412799-001 Smart Array E200 Controller
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  • $33.95 
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HUA722020ALA330 0F10452 HITACHI 2TB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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ST9600205SS Seagate 9TG066 600GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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  • $33.96 
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WD2500AVJS Western Digital AV 250GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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K850F 250GB 7200RPM SATA 2.5Inch Dell Hard Drive
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  • $33.97 
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Dell X162K 146GB 15000RPM 6Gb/s 2.5" SAS Hard Drive ST9146852SS
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  • $33.99 
Hitachi Deskstar 7K1000.B HDT721064SLA360 640 GB 3.5' Internal Hard Drive
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ST9500423AS Seagate 9RT143 500GB 7200RPM 3Gbps 2.5" SATA HDD Hard Drive
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  • $34.00 
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Dell CW76M 1TB SATA 7.2K 6GBPS 3.5" Drive DT01ACA100 HDKPC03D0A06
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Dell HYK2D 2.5 250GB 7200 SATA 7200RPM Laptop HDD HTS725025A7E630
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Dell 36RH9 1.2TB SAS 6G 10K 2.5(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:

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