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WD WD5000AVVS-63ZWB0 500GB 5400 RPM SATA 3.5" Internal Hard Drive Bare Drive
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LOT OF 10 - Seagate ST900MM0006 9WH066 900GB 10K RPM 6Gb/s 2.5" SAS Hard Drive
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Dell 1.20 Tb Hard Drive - 2.5" Internal - Sas (12Gb/S Sas)
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LOT OF 10 -ST9300653SS 9SW066 Seagate 300GB 15K RPM 6Gb/s 2.5"SAS HDD Hard Drive
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LOT OF 10 -Seagate ST9600205SS 9TG066 600GB 10KRPM 6Gbps 2.5" SAS HDD Hard Drive
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ST9160821AS  Seagate 441128-001 160GB 5.4K RPM 1.5Gb/s 2.5"SATA Laptop HardDrive
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LOT OF 10 - Seagate ST91000640SS 9RZ268 1TB 7200RPM 6Gbps 2.5"SAS HDD Hard Drive
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00RX911 00RY107 00RY124 IBM 6TB 7.2K RPM 12Gbps 3.5" SAS Hard Drive For STORWIZE
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(NOT FOR HOME PC!)  400-AUNQ DELL 600GB 10K SAS 2.5" 12Gb/s HDD 14G KIT FACTORY SEALED
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HEWLETT PACKARD ENTERPRISE 861750-B21 HPE 6TB SATA 7.2K LFF SC 512E DS HDD
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st373453fc 73GB 15000 RPM 8MB Cache Fibre Channel 3.5" Hard Drives
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LOT OF 10-ST1200MM0007 Seagate 1DA200 1.2TB 10K RPM 6Gb/s 2.5"SAS HDD Hard Drive
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Dell 12 GB 2.5" Internal Hard Drive - SAS
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DELL 400-ATKM 4 TB 3.5" NL-SAS 7200RPM Hard Drive
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Dell 300 GB 2.5" Internal Hard Drive - SAS
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LOT OF 10-ST9300605SS Seagate 9TE066 300GB 10K RPM 6Gbps 2.5" SAS HDD Hard Drive
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LOT OF 10-Seagate ST2000NM0023 9ZM275 2TB 7.2K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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0-HRS ST91000640SS 9RZ268 Seagate .2 1TB 7.2KRPM 6Gbps 2.5"SAS HardDrive FW:0004
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LOT OF 10-Seagate ST9900805SS 9TH066 900GB 10000RPM 6Gbps 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:

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