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0-HOURS Dell GEN14 RWR8F ST2400MM0159 2.4TB 10K RPM 12Gb/s 2.5" SAS Hard Drive
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  • $650.00 
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9W5WV ST91000640SS Dell 1TB 7.2K RPM 6Gb/s 2.5"SAS SERVER HDD Hard Drive W/Caddy
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  • $41.00 
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HUC101212CSS600 T6TWN Dell 1.2TB 10000RPM 6Gbps 2.5" SAS SERVER Hard Drive
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81Y9795 81Y9794 81Y3864 IBM 2TB 7.2K RPM 6Gb/s 3.5" SATA SERVER HDD Hard Drive
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1XJ233-151 Dell 1.8TB 10K SAS 12G SFF Hard Drive
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H8X3X Dell 960GB SAS 2.5" 12G RI SSD G14-G16 Solid State Drive KPM5XRUG960G
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  • $575.00 
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Toshiba MK1661GSYB 160 GB 2.5' Internal Hard Drive
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1VE100-136 Dell 1TB 7.2K SATA 6G SFF Server Hard Drive
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Seagate ST4000NM0023 4TB 7.2K 6Gb/s 128MB 3.5" SAS Hard Drive
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Dell 400-AKHM - Dell 300GB 2.5" SAS 10K 12Gb/s Hard Drive
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K4M5W DELL 1TB 7.2K SATA 3.5 LFF 6Gbps HDD KIT FS
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HTS541010A7E630 HGST Z5K1000 1TB 5400RPM 6Gbps 2.5" SATA HDD Hard Drive 0J43281
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9SV066-150 Dell 146GB 15K SAS 6G SFF Hard Drive
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1DA200-150 Dell 1.2TB 10K SAS 6G 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:

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