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7YX58 07YX58 ST600MM0006 DELL 600GB 10K 6G SED SFF 2.5'' SAS HDD HARD DRIVE
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ST3146356SS Seagate 146GB 15000RPM 3Gbps 3.5" SAS SERVER HDD Hard Drive
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Western Digital WD2500LPLX 1WPC8 250GB 7200RPM 6Gbps 2.5" SATA Hard Drive
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PGHJG  Dell ST300MM0006 SAVVIO 10K.6 300GB 10K 6G 64MB SFF 2.5" SAS Hard Drive
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IBM RS6000 Hard Drive and Caddy 4.5GB 89H4941
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X160K ST9146803SS Dell 146GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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X160K ST9146803SS Dell 146GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
  • Model #: X160K-ST9146803SS-0X160K-dell-new-ATP123
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Seagate SAVVIO 15K.2 ST9146852SS 9FU066 146GB 15KRPM 6Gb/s 2.5"SAS HDD HardDrive
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Maxtor MaXLine III 7L250S0 250GB 7200 RPM 16MB Cache SATA 1.5Gb/s 3.5" Hard Drive Bare Drive
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Transcend 128GB M.2 2280 PCIe Gen3X4 3D TLC Internal SSD
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Dell Enterprise YJ0GR 300GB 10K 6Gbps SAS 2.5" Hard Drive w/ Caddy HUC106030CSS6
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574270-001 649401-001 574023-B21 HP 500GB 7.2K RPM 3Gbps 3.5" SATA Hard Drive
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574270-001 649401-001 574023-B21 HP 500GB 7.2K RPM 3Gbps 3.5" SATA Hard Drive
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ST3450856SS Seagate 9CL066 450GB 15K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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ST9320320AS Seagate 488446-001 320GB 5.4K RPM 3Gb/s 2.5" SATA HDD Hard Drive
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ST2000NM0023 Seagate 2TB 7200RPM 6Gbps 3.5" SAS HDD Hard Drive (ST2000NM0023)
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WD5003ABYX Western Digital 500GB 7200RPM 3Gbps 3.5" SATA Hard Drive (WD5003ABYX)
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RN828 ST3300555SS Dell 300GB 15K RPM 3Gbps HotSwap 3.5" SAS HDD Hard Drive
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JW552 0JW552 Dell ST3300555SS 300GB 15000RPM 3Gbps 3.5" SAS HDD Hard Drive
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Dell 1TB 7.2K 6Gbps SATA 3.5 HDD 512n (ST1000NM0055)
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Seagate BARRACUDA 7200.9 ST3160812AS 160GB 7.2K RPM 3Gbps 3.5" SATA Hard Drive
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WD2502ABYS Western Digital 250GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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Dell JNR45 - Dell 600GB 2.5" SAS 10K 12Gb/s 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