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HTS543225A7A384, PN 0J20222, MLC DA5778, Hitachi 250GB SATA 2.5 Hard Drive
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RK533 160GB 7200RPM SATA 2.5Inch Dell Hard Drive
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3951W 320GB 5400RPM SATA 2.5Inch Dell Hard Drive
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HPE C8R60B 900 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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HP 3PAR M6710 900GB 6G SAS 10K 2.5IN FE HDD Hard Drive 750782-001 (C8R60B)
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750774-001 746843-001 HPE 900GB 10K 6G SFF 2.5" SAS HDD HARD DRIVE
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750774-001 746843-001 HPE 900GB 10K 6G SFF 2.5" SAS HDD HARD DRIVE
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746843-001 900GB 10000RPM SAS 2.5Inch HP Hard Drive
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Dell KH674 80 GB Hard Disk Drive - 5400 RPM - SATA - 2.5 Inches
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ST9146802SS 9F6066 Seagate SAVVIO 146GB 10K RPM 3Gb/s 2.5"SAS Hard Drive W/Caddy
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HP128 80GB 5400RPM SATA 2.5Inch Dell Hard Drive
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GY581 0GY581 Dell ST373455SS 73GB 15000RPM 3Gbps 3.5" SAS SERVER HDD Hard Drive
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Smart Array E200 SAS 8 Port Controller
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Dell CXKCK - 500GB 7.2K SATA 2.5Inch Hard Drive
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HGST Ultrastar C10K900 HUC109045CSS600 450 GB 2.5 Internal Hard Drive SAS - 10000 rpm - 64 MB Buffer
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431958-B21 432320-001 431954-003 DG146ABAB4 HP 146GB 10K RPM 3Gbps 2.5" SAS HDD Hard Drive
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ST9146853SS Seagate 9SV066 146GB 15K 6Gbps 64MB Cache 2.5" SAS HDD Hard Drive
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WD1600YD Western Digital CAVIAR 160GB 7.2K RPM 3Gb/s 3.5" SATA Hard Drive
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745GC ST9300605SS Dell 300GB 10K RPM 6Gb/s 2.5"SAS SERVER HDD HardDrive W/R Tray
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434916-001 HP 375861-B21 DG072ABAB3 72GB 10K 3G 1-Port 2.5in SAS Hard Drive
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1GDV1 160GB 5400RPM SATA 2.5Inch Dell 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:

the Muttonmastwer
5/11/2026 11:18:09 AM
Hasn't broken yet

“ I have it attached via USB on my desktop and it has all my work on it, safe from Windoze crash damage or erasure on OS re-installs. ”

WD Blue 500GB Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 16MB Cache 3.5 Inch - WD5000AAKX