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IBM  49Y1876  1TB  7200 RPM  SAS 6Gb/s  NL 3.5"  Internal Hard Drive
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IBM 49Y1876 1TB 7200 RPM SAS 6Gb/s NL 3.5" Internal Hard Drive
  • Average Latency: 6Gb/s
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: 49Y1876
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  • $179.00 
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2.5" 1.2TB 10K SAS 12Gb HDD
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Lenovo
2.5" 1.2TB 10K SAS 12Gb HDD
  • NAND Flash Memory Type: SLC
  • Model #: 7XB7A00027
Cisco UCS-HD300G10K12G= 300GB 10000 RPM SAS 12Gb/s 2.5" Internal Hard Drive
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  • $1,309.99 
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WD Gold 8TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 256MB Cache 3.5 Inch - WD8004FRYZ
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WD Gold 8TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 256MB Cache 3.5 Inch - WD8004FRYZ
  • Features: Conquer tough workloads with enterprise-grade WD Gold HDDs. Available in 1TB to 14TB capacities Enhanced reliability with up to 2.5M hours MTBF Specifically designed for use in enterprise-grade data centers and storage systems Improve performance with our vibration protection technology HelioSeal technology delivers high capacities with a low power draw [12TB and
  • Usage: For Enterprise Storage
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Model #: WD8004FRYZ
WD Ultrastar DC HC560 0F38785 20TB Hard Drive 512MB Cache 7200 RPM SATA 6.0Gb/s 512E SE NP3 3.5" Internal HDD (WUH722020BLE6L4) - OEM
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WD Ultrastar DC HC560 0F38785 20TB Hard Drive 512MB Cache 7200 RPM SATA 6.0Gb/s 512E SE NP3 3.5" Internal HDD (WUH722020BLE6L4) - OEM
  • Average Latency: 4.16ms
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Model #: 0F38785
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HGST Ultrastar He12 HUH721212ALE601 12TB 7.2K RPM 256MB SATA-6Gb/s 3.5" Internal Enterprise Hard drive
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Refurbished HGST Ultrastar He12 HUH721212ALE601 12TB 7.2K RPM 256MB SATA-6Gb/s 3.5" Internal Enterprise Hard drive
  • Part Number: HUH721212ALE601
  • Average Seek Time: 4.16
  • Usage: For Enterprise Storage
  • Parts: 30 Days
  • Model #: HUH721212ALE601
WD Red Plus 12TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 256MB Cache, 3.5 Inch - WD120EFBX
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WD Red Plus 12TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 256MB Cache, 3.5 Inch - WD120EFBX
  • NAND Flash Memory Type: Hard Drives
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Model #: WD120EFBX
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Seagate IronWolf ST1000VN008 internal hard drive 3.5" 1000 GB / 1 TB Serial ATA III
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Seagate Exos 7E8 ST4000NM003A 4TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive
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Seagate
Seagate Exos 7E8 ST4000NM003A 4TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.16ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST4000NM003A
HGST Ultrastar 7K4000 HUS724040ALE640 4 TB 3.5" Internal Hard Drive
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HGST Ultrastar 7K4000 HUS724040ALE640 4 TB 3.5" Internal Hard Drive
  • NAND Flash Memory Type: SLC
  • Model #: HUS724040ALE640
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  • $118.17 
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HGST Ultrastar He10 HUH721010ALE604 10TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Helium Platform Enterprise Hard Drive Bare Drive
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Refurbished HGST Ultrastar He10 HUH721010ALE604 10TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Helium Platform Enterprise Hard Drive Bare Drive
  • Average Seek Time: 8ms
  • Average Write Time: 8.6ms
  • Average Latency: 4.16ms
  • Height (maximum): 26.10mm
  • Model #: HUH721010ALE604
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WD Red Pro NAS Hard Drive WD2002FFSX - Internal Hard Drive - 2 TB - 3.5" - SATA 6Gb/s - 7200 rpm - Buffer: 64 MB
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WD Red Pro NAS Hard Drive WD2002FFSX - Internal Hard Drive - 2 TB - 3.5" - SATA 6Gb/s - 7200 rpm - Buffer: 64 MB
  • NAND Flash Memory Type: Computer Hardware
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD2002FFSX
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Seagate IronWolf Pro ST18000NE000 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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Seagate
Seagate IronWolf Pro ST18000NE000 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.16ms
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST18000NE000
  •  
  • $363.99 
ST3000NM0023 Seagate 9ZM278 3TB 7.2K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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WD Gold 1TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 128MB Cache 3.5 Inch - WD1005FBYZ
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HPE 1TB 6G SATA 7.2K LFF MDL LP HDD
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Seagate SkyHawk AI ST12000VE001 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate SkyHawk AI ST12000VE001 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST12000VE001
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WD Blue 3TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD30EZRZ
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WD Blue 3TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD30EZRZ
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD30EZRZ
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WD Red Pro WD141KFGX 14TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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WD Red Pro WD141KFGX 14TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD141KFGX
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4TB HDD Exos7E10 HDD 512N SATA
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Seagate
4TB HDD Exos7E10 HDD 512N SATA
  • Model #: ST4000NM000BSP
Seagate Exos X10 10TB (Helium) 7200 RPM SAS 12Gb/s 256MB Cache Standard Model 512e 3.5'' Internal Hard Drive ST10000NM0096
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Seagate Exos X10 10TB (Helium) 7200 RPM SAS 12Gb/s 256MB Cache Standard Model 512e 3.5'' Internal Hard Drive ST10000NM0096
  • NAND Flash Memory Type: SLC
  • Average Latency: 4.16ms
  • Features: 10TB per drive for 25% more petabytes per rack Industry's lowest power and weight for optimum data center TCO Highest 10TB HDD performance with enhanced caching, making it perfect for OLTP and HPC application Hyperscale SATA model tuned for large data transfers PowerBalance feature optimizes IOPS/Watt Advanced Write Caching feature for 20% boost in random
  • Usage: For Enterprise Storage
  • Model #: ST10000NM0096
HP QK554AT 500GB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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HP
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
  • Parts: Manufacturers Limited Warranty: 1 Year / Parts Only
  • Model #: QK554AT
HGST Ultrastar HE6 HUS726060ALA640 (0F18335) 6TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5" Enterprise Hard Drive
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Refurbished HGST Ultrastar HE6 HUS726060ALA640 (0F18335) 6TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5" Enterprise Hard Drive
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: HUS726060ALA640-0F18
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  • $59.95 
  • Free Shipping
WD Red Plus 8TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s, CMR, 256MB Cache, 3.5 Inch - WD80EFAX
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Western Digital Purple WD22PURZ 2 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method - Video Surveillance System Device Supported - 3 Year Warranty
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Seagate BarraCuda 7200.7 ST380013AS 80GB 7200 RPM 8MB Cache SATA 1.5Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda 7200.7 ST380013AS 80GB 7200 RPM 8MB Cache SATA 1.5Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Average Latency: 4.16ms
  • Parts: 5 years limited
  • Labor: 5 years limited
  • Model #: ST380013AS
  •  
  • $26.22 
  • Free Shipping
WD Purple 1TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD10PURZ
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WD Purple 1TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD10PURZ
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD10PURZ

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