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49Y1937 49Y1901 49Y1928 IBM 600GB 15K RPM 6Gb/s 3.5" SAS SERVER HDD Hard Drive
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HPE 601778-001 2 TB Hard Drive - 3.5" Internal - SATA (SATA/300)
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59Y5336 59Y5322 59Y5460 IBM 600GB 15000RPM 4Gbps HotSwap 3.5" FC-AL Hard Drive
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49Y1936 49Y1900 49Y1927 IBM SYSTEM 450GB 15000RPM 6Gbps 3.5" SAS HDD Hard Drive
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00NA242 00NA241 00NA245 IBM 600GB 10000RPM 12Gbps 2.5" SAS SERVER HDD Hard Drive
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400-ANTW DELL 10TB 7.2K SAS 3.5" 12Gb/s HDD WITH 13 GEN TRAY FS
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49Y6098 49Y6097 49Y6101 IBM 450GB 15000RPM 6Gbps 3.5" SAS SERVER HDD Hard Drive
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411089-B22 411261-001 HP 300GB 15K RPM 8MB U320 80Pin 3.5" SCSI Hard Drive
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  • $225.00 
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00AJ136 00AJ137 00AJ140 IBM 500GB 7200RPM 6Gbps NL 2.5" SATA HDD Hard Drive
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00AJ136 00AJ137 00AJ140 IBM 500GB 7200RPM 6Gbps NL 2.5" SATA HDD Hard Drive
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00AJ136 00AJ137 00AJ140 IBM 500GB 7200RPM 6Gbps NL 2.5" SATA HDD Hard Drive
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IBM 01AC596 01EJ017 01EJ019 900GB 10000RPM 12Gbps 2.5" SAS SERVER HDD Hard Drive
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820033-001 819203-B21 HP 8TB 3.5" SATA G8-G10 6Gb/s 7.2K 512e Hard Drive
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9FM066-039 ST3450857SS IBM 450GB 15000RPM 6Gbps 3.5" SAS SERVER HDD Hard Drive
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  • $185.00 
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IBM 17R6337 300Gb 10000Rpm Fibre Channel Hot Swap Hard Disk Drive With Tray
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  • $127.19 
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0-HOURS IBM 44W2244 44W2245 44W2248 600GB 15000RPM 6Gbps 3.5" SAS Hard Drive
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  • $190.00 
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400-ANVN DELL 10TB 7.2K SAS 3.5" 12Gb/s HDD WITH 13 GEN TRAY FS
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Dell 342-5879 - 4TB 3.5" SAS 7.2K 6Gb/s HS Secure Encrypted Drive
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  • $369.00 
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HPE 718291-001 1.20 TB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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  • $224.19 
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00Y5147 00Y5148 00Y5146 IBM 4TB 7.2K RPM 6Gb/s NL 3.5" SAS SERVER HDD Hard Drive
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Dell 400-AJOQ 300GB 2.5 12Gbps 10K RPM HS SAS HDD Kit 8FKXC
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HP MB1000EAMZE 1Tb 7200Rpm 3.5Inch 3G Sata Lff Hotplug Ncq Hard Disk Drive With Tray
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HP 507631-002 1Tb 7200Rpm 3.5Inch Sata Lff Hotplug Hard Disk Drive With Tray
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  • $156.00 
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00NA272 00NA271 00NA275 IBM 1.8TB 10K RPM 12Gb/s 2.5" SAS SERVER 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