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Hitachi HTS545050A7E680 0J30005 500GB 5400RPM 6Gbps 2.5"SATA LaptopHDD HardDrive
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Fujitsu MBC2073RC 2.5-Inch 15K 73GB SAS Hard Drive
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HP 600GB 10000 2/4GB FC M6412 - AP732B-RF
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ST1000NM0023 Seagate 9ZM273-004 1TB 7.2K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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Dell 341-9875 146 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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HPE AP732B StorageWorks 600 GB SAN Hard Drive - Fibre Channel
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IBM 85Y6088 146 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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Dell G14 1XZ231-150 1.8TB 10K RPM SAS 12Gb/s 512e 2.5" Hard Drive
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Dell TMC3T 160GB 3GBPS 2.5" MLC Solid State Drive SSDSA2BW160G3D
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0DR238 146GB 10000RPM SAS 3.5Inch Dell Hard Drive
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Dell WD3001BKHG CWHNN Western Digital 300GB 10K 6Gbps SAS SFF 2.5" HDD w TRAY
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ST9146853SS Dell SAVVIO 15K.3 146GB 15K RPM 6Gbps 2.5" SAS Hard Drive W/R Tray
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ST9146802SS CM318 Dell SAVVIO 146GB 10K RPM 3Gbps 2.5" SAS Hard Drive W/Caddy
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AP732-64201 600GB 10000RPM Fibre Channel 3.5Inch HP Hard Drive
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43X0805 43X0802 42C0242 IBM 300GB 15K RPM 3Gb/s 3.5" HS SAS Hard Drive W/Caddy
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652766-B21 625030-001 653959-001 HP 3TB 7.2K 6G Ml HS SC 3.5" SAS Hard Drive
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ST3000NM0023 Seagate 9ZM278 3TB 7.2K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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Seagate BARRACUDA 7200.10 ST3250310AS 250GB 7.2K 3G 8MB 3.5in SATA Hard Drive
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WD1003FBYX Western Digital 1TB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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WD1600YS Western Digital 160GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive (WD1600YS)
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P252M 0P252M HUC103030CSS600 Dell 300GB 10K RPM 6Gb/s 2.5" SAS 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:

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