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HITACHI DESKSTAR 320GB 7200RPM 16MB CACHE 3.5 INCH SATA HARD DRIVE HDT72532VLA380
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  • $58.19 
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IBM 49Y1880 - 1TB 3.5" Near Line SAS 7.2K 6Gb/s HS Hard Drive
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  • $135.19 
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Fujitsu Mhy2160bh 160Gb 5400Rpm 8Mb Buffer 2.5Inch Sata Notebook Hard Drive
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  • $48.20
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  • $48.19 
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HP 430165-003 146Gb 10000Rpm Sas 3Gbits 2.5Inch Dual Port Sff Hard Disk Drive With Tray
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  • $130.19 
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ST3600057SS 600GB 15K RPM 6Gb/s 3.5" SAS HDD for Dell T300 T310 T320 T330 T410
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  • $118.95 
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HP 646894-001 1Tb 7200Rpm Sata 3.5Inch Hot Swap Hard Disk Drive
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  • $71.19 
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Dell 400-ALNY Hard Drives
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DELL
Dell 400-ALNY Hard Drives
  • Model #: 400-ALNY
HTS541010A9E680 HGST 0J26213 1TB 5400RPM 6Gbps 2.5" SATA HDD Hard Drive
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  • $225.00 
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Seagate ST3146356SS 146GB 15000 RPM SAS 3Gb/s 3.5" Internal Hard Drive
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  • $28.00 
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01NN116 01NN142 01NN144 IBM 1.8TB 10K 12Gb/s 2.5" SAS Hard Drive For V5000 GEN2
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  • $269.99 
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HP 404709-001 72.8GB 10000 RPM SCSI Ultra320 HOT-PLUG Internal Hard Drive
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  • $51.95 
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ST3300657SS-H Seagate CHEETAH 15K.7 146GB 15K RPM 6Gb/s 16MB 3.5" SAS Hard Drive
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  • $55.96 
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HP 289042-001 72.8GB 10000 RPM SCSI Ultra320 3.5" Internal Hard Drive
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  • $29.80 
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Fujitsu MAX3147NC 147GB 15000 RPM 8MB Cache SCSI Ultra320 80pin 3.5" Hard Drive
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  • $235.19 
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HGST 0B35948 4Tb 3.5 Inch 256Mb 7200Rpm Sata Ultra 4Kn Secure Erase 7K6 Bare
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  • $229.00 
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ST1000DL003 Seagate 1TB 5.4K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $48.95 
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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