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Seagate ST2000NX0273 ST2000NX0273 2 TB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
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Seagate
Refurbished Seagate ST2000NX0273 ST2000NX0273 2 TB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
  • NAND Flash Memory Type: SLC
  • Usage: For Enterprise Storage
  • Model #: ST2000NX0273
WD Gold 4TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6 Gb/s 3.5 Inch - WD4004FRYZ
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WD Gold 4TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6 Gb/s 3.5 Inch - WD4004FRYZ
  • Brand: WD
  • Series: Gold
  • Capacity: 4TB
  • RPM: 7200 RPM
  • Model #: WD4004FRYZ
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Seagate ST1800MM0128 1.8TB 10000 RPM 128MB Cache SAS 12Gb/s 2.5" Internal Hard Drive Bare Drive
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Seagate
Seagate ST1800MM0128 1.8TB 10000 RPM 128MB Cache SAS 12Gb/s 2.5" Internal Hard Drive Bare Drive
  • Height (maximum): 15.00mm
  • Width (maximum): 70.10mm
  • Length (maximum): 100.46mm
  • Model #: ST1800MM0128
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  • $238.00 
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HGST Ultrastar A7K2000 HUA722010CLA330 (0A39289) 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Enterprise Hard Drive Bare Drive
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HGST Ultrastar A7K2000 HUA722010CLA330 (0A39289) 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Enterprise Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Height (maximum): 25.4mm
  • Parts: 2 yrs
  • Labor: 2 yrs
  • Model #: 0A39289
Seagate DB35 Series 7200.3 ST3750840ACE 750GB 7200 RPM 8MB Cache IDE Ultra ATA100 / ATA-6 3.5" Hard Drive Bare Drive
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  • $115.19 
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Western Digital WD Green WD10EARS 1TB 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Manufacture Recertified Bare Drive
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  • $79.99 
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HGST Ultrastar 7K6000 HUS726020ALE610 (0F23009) 2TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Enterprise Hard Drive Bare Drive
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HGST Ultrastar 7K6000 HUS726020ALE610 (0F23009) 2TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Enterprise Hard Drive Bare Drive
  • Average Seek Time: 7.6ms
  • Average Write Time: 8ms
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Model #: 0F23009
Seagate Cheetah 15K.4 ST336754LC 36.7GB 15000 RPM 8MB Cache SCSI Ultra320 80pin 3.5" Hard Drive Bare Drive
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Seagate
Seagate Cheetah 15K.4 ST336754LC 36.7GB 15000 RPM 8MB Cache SCSI Ultra320 80pin 3.5" Hard Drive Bare Drive
  • Average Seek Time: 3.5ms
  • Average Write Time: 4.0ms
  • Average Latency: 2ms
  • Parts: 5 years limited
  • Model #: ST336754LC
Seagate ST6000DM003 BarraCuda ST6000DM003 6 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
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Seagate
Refurbished Seagate ST6000DM003 BarraCuda ST6000DM003 6 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
  • NAND Flash Memory Type: SLC
  • Average Seek Time: 15ms
  • Average Latency: 6.0ms
  • Model #: ST6000DM003
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  • $220.00 
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Western Digital Caviar SE WD2500JS 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Western Digital Caviar SE WD2500JS 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.9ms
  • Average Latency: 4.2ms
  • NAND Flash Memory Type: Desktop
  • Parts: 3 years limited
  • Model #: WD2500JS
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  • $148.20 
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Western Digital Caviar SE WD400JD 40GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Western Digital Caviar SE WD400JD 40GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.9ms
  • Average Write Time: 10.9ms
  • Average Latency: 4.2ms
  • Parts: 3 years limited
  • Model #: WD400JD
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  • $55.86 
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TOSHIBA X300 HDWR160XZSTA 6TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive Retail Packaging
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TOSHIBA X300 HDWR160XZSTA 6TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive Retail Packaging
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: HDWR160XZSTA
WD Ultrastar DC HC520 | HUH721212AL4200 (0F29560) | 12TB 7200 RPM 4Kn SAS 12Gb/s 256MB Cache 3.5-Inch Internal Enterprise HDD Data Center Hard Disk Drive
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Western Digital Blue WD3200AAKS 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Refurbished Western Digital Blue WD3200AAKS 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 8.9ms
  • Average Write Time: 10.9ms
  • Average Latency: 4.2ms
  • Model #: WD3200AAKS
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  • $50.00 
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HGST Ultrastar He8 HUH728060ALE604 (0F23669) 6TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Helium Platform Enterprise Hard Drive Bare Drive
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HGST Ultrastar He8 HUH728060ALE604 (0F23669) 6TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Helium Platform Enterprise Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Average Write Time: 9ms
  • Average Latency: 4.16ms
  • Height (maximum): 26.1mm
  • Model #: 0F23669
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HGST MegaScale DC 4000.B HMS5C4040ALE640 (0F19847) 4TB Coolspin 64MB Cache SATA III 6.0Gb/s 3.5" Enterprise Hard Drive - w/3 Year Warranty
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HGST MegaScale DC 4000.B HMS5C4040ALE640 (0F19847) 4TB Coolspin 64MB Cache SATA III 6.0Gb/s 3.5" Enterprise Hard Drive - w/3 Year Warranty
  • Parts: 3 Year Warranty from Reseller
  • Labor: 3 Year Warranty from Reseller
  • Model #: HMS5C4040ALE640
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  • $94.00 
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HGST HUS726T6TALE6L4 3.5" 6TB SATA 7.2KRPM 256M 0B36039 512e SE HDD
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HGST HUS726T6TALE6L4 3.5" 6TB SATA 7.2KRPM 256M 0B36039 512e SE HDD
  • Average Latency: 6Gb/s
  • Usage: For Enterprise Storage
  • Model #: HUS726T6TALE6L4
Seagate Exos 7E8 8TB SATA 6Gb/s 7200 RPM 3.5" Enterprise HDD — ST8000NM000A
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Refurbished Seagate Exos 7E8 8TB SATA 6Gb/s 7200 RPM 3.5" Enterprise HDD — ST8000NM000A
  • NAND Flash Memory Type: SLC
  • Average Latency: 4.16ms
  • Features: Humidity Sensor, SuperParity, Low Halogen, PowerChoice™ Technology, PowerBalance™ Technology
  • Usage: For Enterprise Storage
  • Model #: ST8000NM000A
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  • $349.97 
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HGST HUA723020ALA640 (0F12455) 2TB 64MB 7200RPM SATA 6.0Gb/s 3.5" Hard Drive
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HGST HUA723020ALA640 (0F12455) 2TB 64MB 7200RPM SATA 6.0Gb/s 3.5" Hard Drive
  • Parts: 30 days warranty
  • Labor: 30 days warranty
  • Model #: 9b8-966410000112561
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  • $64.23 
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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