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9ZM270-150 Dell 4TB 7.2K SAS 6G LFF Hard Drive
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0B24496 Dell 600GB 15K SAS 6G LFF Hard Drive
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R95FV DELL 600GB 10K SAS 2.5" 12Gb/s HDD KIT W/ TRAY
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Dell 12GYY 012GYY 4TB 7200 RPM 512n SAS 6Gb/s 64MB Cache 3.5" Hard Drive
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DELL
Dell 12GYY 012GYY 4TB 7200 RPM 512n SAS 6Gb/s 64MB Cache 3.5" Hard Drive
  • Average Latency: 6Gb/s
  • Usage: For Enterprise Storage
  • Model #: 12GYY
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4HGTJ DELL 600GB 15K SAS 2.5 HDD 12Gbps
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DELL
4HGTJ DELL 600GB 15K SAS 2.5 HDD 12Gbps
  • Model #: d9b-029351000252445
LOT OF 10 - Dell 55H49 ST3000NM0023 3TB 7.2K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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  • $899.00 
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HUC101812CS4200  0B29920 HGST 1.2TB 10000RPM 12Gbps 2.5" SAS HDD Hard Drive
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3PRF0 6TB 7200RPM SAS 3.5Inch Dell Hard Drive
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DELL
Refurbished 3PRF0 6TB 7200RPM SAS 3.5Inch Dell Hard Drive
  • Part Number: 3PRF0
  • NAND Flash Memory Type: SLC
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: 3PRF0
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  • $299.00 
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HGST Deskstar NAS 3.5" 4TB 7200 RPM 64MB Cache SATA 6.0Gb/s High-Performance Hard Drive for Desktop NAS Systems Retail Packaging
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HGST Deskstar NAS 3.5" 4TB 7200 RPM 64MB Cache SATA 6.0Gb/s High-Performance Hard Drive for Desktop NAS Systems Retail Packaging
  • Average Latency: 6Gb/s
  • Height (maximum): 26.10mm
  • Width (maximum): 101.00mm
  • Length (maximum): 146.00mm
  • Model #: 0S03664
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ST500LM034 Seagate 2GH17A 500GB 7.2K RPM 6Gb/s 2.5" SATA Laptop HDD Hard Drive
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ST4000NM0115 Seagate ENT 4TB 3.5" SATA 7.2K 6Gb/s Hard Drive
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Seagate
ST4000NM0115 Seagate ENT 4TB 3.5" SATA 7.2K 6Gb/s Hard Drive
  • Model #: ST4000NM0115-1YZ107-005-n-seagate-atp
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  • $195.00 
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Dell 3481G - Dell 200GB 2.5" SATA  6Gb/s Solid State Drive
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Seagate 20TB Exos X24 HDD 3.5 SAS 7200 ISE Bare Hard Drive
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WD WD60PURX Purple WD60PURX 6TB Surveillance 3.5" Internal Hard Drive
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Western Digital
Refurbished WD WD60PURX Purple WD60PURX 6TB Surveillance 3.5" Internal Hard Drive
  • NAND Flash Memory Type: SLC
  • Features: WD Purple surveillance storage is built for 24/7 always-on surveillance in high-definition security systems that use up to eight hard drives and up to 32 cameras. Exclusive AllFrame technology works with ATA streaming to reduce error pixilation and video interruptions that occur when desktop hard drives are incorrectly used as
  • Usage: For Video Surveillance
  • Parts: 30 DAYS WARRANTY
  • Model #: WD60PURX
HPE 300 GB Hard Drive 2.5" Internal SAS 12Gb/s SAS P40430B21
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Seagate Exos 16TB Enterprise HDD X16 SATA 6Gb/s 512e/4Kn 7200 RPM 256MB Cache 3.5" Internal Hard Drive ST16000NM001G
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Seagate Exos 16TB Enterprise HDD X16 SATA 6Gb/s 512e/4Kn 7200 RPM 256MB Cache 3.5" Internal Hard Drive ST16000NM001G
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Model #: ST16000NM001G
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HP High-Performance Secure Hard Disk (B5L29A)
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HP
HP High-Performance Secure Hard Disk (B5L29A)
  • Part Number: B5L29A
  • Features: HP High-Performance Secure Hard Disk
  • Usage: HP Color LaserJet Enterprise M553n B5L24A, HP Color LaserJet Enterprise M553dn B5L25A, HP Color LaserJet Enterprise M553x B5L26A, HP Color LaserJet Managed M553dnm B5L38A, HP Color LaserJet Managed M553xm B5L39A, HP LaserJet Enterprise M604n E6B67A, HP LaserJet Enterprise M604dn E6B68A, HP LaserJet Enterprise M605n E6B69A, HP LaserJet Enterprise M605dn E6B70A,
  • Height (maximum): 1.4"
  • Model #: B5L29A
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HPE Midline - Hard drive - 4 TB - hot-swap - 3.5" LFF Low Profile - SATA 6Gb/s - 7200 rpm
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  • $387.99 
  • $11.62 Shipping
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HP QK554AT 500GB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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HP
Open Box HP QK554AT 500GB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 6Gb/s
  • NAND Flash Memory Type: Hard Drive
  • Model #: QK554AT
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  • $89.99 
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Seagate Constellation ES ST500NM0001 500GB 7200 RPM 64MB Cache SAS 6Gb/s 3.5" Internal Enterprise Hard Drive Bare Drive
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Seagate Constellation ES ST500NM0001 500GB 7200 RPM 64MB Cache SAS 6Gb/s 3.5" Internal Enterprise Hard Drive Bare Drive
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Enterprise
  • Parts: 2 YRS
  • Labor: 2 YRS
  • Model #: ST500NM0001
Western Digital AV-GP WD20EURS 2TB 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate EXOS X24 20TB SAS 12Gb/s ISE 3.5inch Hard drive - ST20000NM007H
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  • $1,100.00 - $1,225.00
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Avolusion PRO-5X Series 2TB USB 3.0 External Gaming Hard Drive for PS5 Game Console (White) - 2 Year Warranty
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  • $98.99 
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Seagate Exos 7E10 ST2000NM017B 2TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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Seagate
Seagate Exos 7E10 ST2000NM017B 2TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Model #: ST2000NM017B
Avolusion 1TB USB 3.0 External PS4 (Slim & Pro) Hard Drive (PS4 Pre-Formatted)
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  • $59.99 
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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