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T4XNN 0T4XNN DELL ST1000NM0033 1TB 7.2K RPM 6Gb/s 3.5"SATA SERVER HDD Hard Drive
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0J8090 J8090 DELL 73GB 15K RPM 3Gb/s 3.5" SAS SERVER HDD HARD DRIVE ST373454SS
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YP778 0YP778 Dell 300GB 15K RPM 3Gb/s 3.5" SAS Hard Drive ST3300656SS
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DELL
YP778 0YP778 Dell 300GB 15K RPM 3Gb/s 3.5" SAS Hard Drive ST3300656SS
  • Model #: YP778-0YP778-ST3300656SS-dell-new-ATP
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H8799 0H8799 Dell MAX3073RC 73GB 15K RPM 3Gb/s 3.5" SAS SERVER HDD Hard Drive
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Dell XX518 ST3146356SS 146GB 15K RPM 3Gb/s 3.5" SAS HDD Hard Drive - (0 HOURS)
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  • $55.88 
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DELL 4GN49 - Dell 300GB 15K SAS 2.5 6Gb/s Hard Drive with R Tray
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Dell T871K 300GB 2.5 6Gb/s SAS - 10k RPM Internal Hard Drive
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Dell T871K 300GB 2.5 6Gb/s SAS - 10k RPM Internal Hard Drive
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R7FKF ST2000NM0005 DELL HDD V4 2TB 7.2K RPM 12Gb/s 3.5"SAS SERVER HDD Hard Drive
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  • $146.88 
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DELL T871K DELL 300GB 10K RPM 2.5 SAS HARD DRIVE with R Series Tray
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HPE 763836-B21 1.60 TB Solid State Drive - Internal - PCI Express (PCI Express 2.0 x8)
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  • $763.10 
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4GN49 04GN49 Dell AL13SXB300N 300GB 15K RPM 6Gb/s 2.5" SAS ENTERPRISE Hard Drive
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Dell EQL 2HR85 02HR85 ST31000524N8 1TB 7.2K RPM 3Gbps 3.5" SATA HDD Hard Drive
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W348K Dell HUS156060VLS600 ENT 600GB 15KRPM 6Gb/s  3.5" SAS Hard Drive - (0 HRS)
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MY58D HUS724030ALS640 DELL 3TB 7.2K 6Gb/s 64MB 3.5" SAS HDD Hard Drive W/Caddy
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0V5300 V5300 Dell ST600MP0005 600GB 15K RPM 6Gb/s 2.5" SAS SERVER HDD Hard Drive
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745GC ST9300605SS Dell 300GB 10K RPM 6Gb/s 2.5" SAS Hard Drive - (ZERO 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:

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