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Seagate BarraCuda XT ST32000641AS 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $70.26 
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Seagate BarraCuda ES.2 ST3750330NS 750GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate Barracuda LP ST31500541AS 1.5TB 5900 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $73.01 
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Seagate BarraCuda Green ST1500DL003 1.5TB 5900 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $78.25 
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0F9W8 MG04SCA40EN Dell ENTERPRISE 4TB 7.2KRPM 12Gb/s 3.5"SAS SERVERHDD HardDrive
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  • $98.00 
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Dell R755K Original Dell 2TB 7.2K SAS 3.5 drives w/tray
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07FPR Dell 10TB 7.2K SAS 12Gb/s 3.5" 512e HDD 007FPR HUH721010AL5200 New
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  • $345.00 
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26K5777 26K5779 IBM 73.4GB 10K RPM 3Gb/s SFF NH 2.5" SAS SERVER HDD Hard Drive
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00WG691 00WG690 00WG694 LENOVO 600GB 10K RPM 12Gb/s 2.5" SAS HDD Hard Drive
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  • $135.00 
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01AC598 01EJ027 01EJ029 IBM 1.8TB 10000RPM 12Gbps 2.5" SAS SERVER HDD Hard Drive
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  • $210.00 
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Seagate Barracuda (SATA ) 3.5" Internal Hard Drive 1.5TB 7200rpm 32MB Cache 3Gb/s HDD for PC PN 9JU138-302, ST31500341AS
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Refurbished Seagate Barracuda (SATA ) 3.5" Internal Hard Drive 1.5TB 7200rpm 32MB Cache 3Gb/s HDD for PC PN 9JU138-302, ST31500341AS
  • NAND Flash Memory Type: SLC
  • Features: 3D Defense System
  • Usage: For Daily Computing
  • Parts: 1 Year Warranty from Reseller
  • Model #: ST31500341AS
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  • $81.25 
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Dell 146 GB 3.5" Internal Hard Drive
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DELL
Dell 146 GB 3.5" Internal Hard Drive
  • Average Latency: 6Gb/s
  • Model #: RY491
  • $64.00
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  • $47.99 
  • Save: 25%
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3C46W - DELL 1TB 7.2K SATA 3.5 LFF 6Gbps HDD KIT FS
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H8799 DELL 73GB 15K SAS 3.5 HDD 3GBPS
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DELL
H8799 DELL 73GB 15K SAS 3.5 HDD 3GBPS
  • Model #: dc1-790400000253208
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  • $41.99 
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Dell EMC 08MG73 16TB ISE 7.2k 512e 3.5inch 512MB NL SAS 12Gbps Hot Plug Hdd
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Dell THGNN 4TB 7.2k 3.5" SATA-6Gb/s HDD
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Dell THGNN 4TB 7.2k 3.5" SATA-6Gb/s HDD
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EG001200JWJNQ HPE 1.2TB 12G 10K SFF SAS SC Hard Drive
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Dell 1P7DP 2TB NL SAS 7200RPM 6GBPS w/tray
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DELL
Dell 1P7DP 2TB NL SAS 7200RPM 6GBPS w/tray
  • Model #: 838-252806000253880
Dell 400-BOZW 22TB Hard Drive SAS ISE 12Gbps 7.2K 512e 3.5in Hot-Plug AG
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431944-B21 HP 300GB 3G S-P SAS 15K RPM 3.5" LFF Hot Plug Hard Drive 432146-001
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Refurbished 431944-B21 HP 300GB 3G S-P SAS 15K RPM 3.5" LFF Hot Plug Hard Drive 432146-001
  • Part Number: 431944-B21
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: 431944-B21-REF
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  • $34.01 
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G4V45 0G4V45 PX02SMB160 Dell 1.6TB MLC 12Gbps 2.5" SAS Solid State Drive (SSD)
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  • $866.25 
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Dell 345-BFYF 800GB SAS 24Gbps Mix Use 512e 2.5in Hot-Plug Drive
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Dell 250GB 7.2K 6Gbps SATA 2.5 HDD 512n (DNTWD)
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DELL
Refurbished Dell 250GB 7.2K 6Gbps SATA 2.5 HDD 512n (DNTWD)
  • Brand: Dell
  • Series: DNTWD
  • Model: ST9250610NS
  • Capacity: 50GB
  • Model #: 011110343741
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  • $39.00 
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Dell 36RH9 1.2TB SAS 6G 10K 2.5(SFF) Hard Drive
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  • $52.00 
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ST300MM0026 Seagate 300GB 10K RPM 2.5 SAS 6 Gb/s FW: 0004 9WJ066-004 Savvio 10K.6 SED Self-Encrypting Drive
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  • $64.00 
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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