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WD Red Pro 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - WD161KFGX
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WD Red Pro 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - WD161KFGX
  • Brand: WD
  • Series: Red Pro
  • Capacity: 16TB
  • RPM: 7200 RPM
  • Model #: WD161KFGX
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Seagate BarraCuda ST1000DM010 1TB 64MB Cache SATA 6.0Gb/s 3.5" Hard Drive
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Seagate
Refurbished Seagate BarraCuda ST1000DM010 1TB 64MB Cache SATA 6.0Gb/s 3.5" Hard Drive
  • NAND Flash Memory Type: SLC
  • Usage: For Daily Computing
  • Model #: ST1000DM010
Seagate (Recertified) Exos X 26TB Internal Hard Drive HDD - 3.5 In CMR SATA 6Gb/s, 7200 RPM, 512MB Cache, 2.5M MTBF (ST26000NM000C)
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Refurbished Seagate (Recertified) Exos X 26TB Internal Hard Drive HDD - 3.5 In CMR SATA 6Gb/s, 7200 RPM, 512MB Cache, 2.5M MTBF (ST26000NM000C)
  • Average Latency: 4.16ms
  • Part Number: ST26000NM000C
  • NAND Flash Memory Type: Hard Drive
  • Recording Technology: CMR
  • Model #: ST26000NM000C
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WD Blue 6TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 256MB Cache 3.5 Inch - WD60EZAX
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  •  
  • $199.99 
Hitach Deskstar 7K1000.C HDS721050CLA662 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Refurbished Hitach Deskstar 7K1000.C HDS721050CLA662 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 8.9ms
  • Windows Vista: Works with Windows Vista
  • Model #: HDS721050CLA662
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WD Purple WD33PURZ 3 TB Hard Drive 3.5" Internal SATA SATA/600 5400rpm
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Western Digital
Refurbished WD Purple WD33PURZ 3 TB Hard Drive 3.5" Internal SATA SATA/600 5400rpm
  • Brand: WD
  • Capacity: 3TB
  • RPM: 5400 RPM
  • Interface: SATA 6.0Gb/s
  • Model #: WD33PURZ
  •  
  • $144.99 
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MDD (MDD16TSATA25672DVR) 16TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Surveillance Hard Drive - 3 Years Warranty
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Refurbished MDD (MDD16TSATA25672DVR) 16TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Surveillance Hard Drive - 3 Years Warranty
  • Part Number: MDD16TSATA25672DVR
  • Usage: For Video Surveillance / CCTV
  • Height (maximum): 1"
  • Width (maximum): 4"
  • Model #: MDD16TSATA25672DVR
  •  
  • $399.99 
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Seagate/IBM Exos X16 ST16000NM002G 16TB 7.2K RPM SAS 12Gb/s 512e/4Kn 3.5in Enterprise Hard Drive
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Seagate
Refurbished Seagate/IBM Exos X16 ST16000NM002G 16TB 7.2K RPM SAS 12Gb/s 512e/4Kn 3.5in Enterprise Hard Drive
  • Brand: Seagate/IBM
  • Series: Exos X16
  • Model: ST16000NM002G
  • Capacity: 16TB
  • Model #: ST16000NM002G
MDD 24TB 7200RPM 512MB Cache SATA 6.0Gb/s 3.5inch Internal Hard Drive for Surveillance Storage (MDD24TS51272DVR)- 5 Years Warranty
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  • $559.95 
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MDD MDD18TSATA25672DVR 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive for Surveillance
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Refurbished MDD MDD18TSATA25672DVR 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive for Surveillance
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Parts: 5 Years
  • Model #: MDD18TSATA25672DVR
  •  
  • $439.99 
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Seagate Cheetah 15K.5 ST3146855SS 146GB 15000 RPM 16MB Cache SAS 3Gb/s 3.5" Internal Hard Drive Bare Drive
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Refurbished Seagate Cheetah 15K.5 ST3146855SS 146GB 15000 RPM 16MB Cache SAS 3Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 4ms
  • Average Latency: 2ms
  • Parts: 1 YR
  • Labor: 1 YR
  • Model #: ST3146855SS
Western Digital 14TB 5.4K SATA 6Gbps 512MB 3.5" WD140EDGZ Internal Hard Drive
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Western Digital
Refurbished Western Digital 14TB 5.4K SATA 6Gbps 512MB 3.5" WD140EDGZ Internal Hard Drive
  • Average Seek Time: 4.6ms
  • Part Number: WD140EDGZ
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: WD140EDGZ
  •  
  • $349.00 
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Seagate Constellation ES.3 ST2000NM0033 2TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Enterprise Internal Hard Drive Bare Drive
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Refurbished Seagate Constellation ES.3 ST2000NM0033 2TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Enterprise Internal Hard Drive Bare Drive
  • Average Latency: 4.16ms
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: ST2000NM0033
WD5000AZLX Western Digital 500GB 7200RPM 6Gbps 3.5" SATA Hard Drive (WD5000AZLX)
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  • $42.96 
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Samsung Spinpoint F3 HD103SJ 3.5in 1TB SATA 3.0Gb/s 7200RPM 32MB Cache Hard Drive - Refurbished
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SAMSUNG
Refurbished Samsung Spinpoint F3 HD103SJ 3.5in 1TB SATA 3.0Gb/s 7200RPM 32MB Cache Hard Drive - Refurbished
  • Average Seek Time: 8.9ms
  • Height (maximum): 25.4mm
  • Width (maximum): 101.6mm
  • Length (maximum): 146mm
  • Model #: HD103SJ/refurb
  •  
  • $250.99 
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Seagate Constellation ES.2 ST33000650SS-RF 3TB 7200 RPM 64MB Cache SAS 6Gb/s 3.5" Internal Hard Drive
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Seagate
Refurbished Seagate Constellation ES.2 ST33000650SS-RF 3TB 7200 RPM 64MB Cache SAS 6Gb/s 3.5" Internal Hard Drive
  • Average Seek Time: 8.5ms
  • Average Write Time: 9.5ms
  • Average Latency: 4.16ms
  • Height (maximum): 26.10mm
  • Model #: ST33000650SS-RF
2.5’’  300GB VelociRaptor WD3000BLFS  10000 RPM 16MB Cache 2.5" SATA 3.0Gb/s Internal Enterprise Hard Drive -Bare Drive
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Refurbished 2.5’’ 300GB VelociRaptor WD3000BLFS 10000 RPM 16MB Cache 2.5" SATA 3.0Gb/s Internal Enterprise Hard Drive -Bare Drive
  • Average Write Time: 4.7ms
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WD3000BLFS
  •  
  • $79.99 
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WD WD RE4 WD5003ABYX 500GB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Refurbished WD WD RE4 WD5003ABYX 500GB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WD5003ABYX
  •  
  • $30.99 
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Western Digital Blue WD2500AAKX 250GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Refurbished Western Digital Blue WD2500AAKX 250GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • NAND Flash Memory Type: SLC
  • Features: WD expands their award-winning desktop and mobile storage lineup with WD Blue PC hard drives. Extensively tested and built to WD's high standards, WD Blue offers a wide variety of capacities - ranging from 250GB to the massive 6TB - in both desktop and mobile models. Drive WD Blue with
  • Usage: For Daily Computing
  • Height (maximum): 25.40mm
  • Model #: WD2500AAKX
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WD AV-GP WD10EURS 1TB 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Western Digital
Refurbished WD AV-GP WD10EURS 1TB 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WD10EURS
  •  
  • $45.50 
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SEAGATE ST12000NM005G Exos X16 12TB SATA 6Gb/s 3.5inch Hard drive
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  • $369.00 
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HP/Seagate Exos X16 ST12000NM006J 12TB 7.2K RPM SAS 12Gb/s 512e 256MB 3.5in Refurbished HDD
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Seagate
Refurbished HP/Seagate Exos X16 ST12000NM006J 12TB 7.2K RPM SAS 12Gb/s 512e 256MB 3.5in Refurbished HDD
  • Brand: HP/Seagate
  • Series: Exos X16
  • Capacity: 12TB
  • RPM: 7200 RPM
  • Model #: ST12000NM006J-HP
  •  
  • $359.00 
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MDD (MDD16TSATA25672E) 16TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5'' Internal Enterprise Hard Drive - 5 Years Warranty
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Refurbished MDD (MDD16TSATA25672E) 16TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5'' Internal Enterprise Hard Drive - 5 Years Warranty
  • Brand: MaxDigitalData
  • Capacity: 16TB
  • Interface: SATA 6.0Gb/s
  • Form Factor: 3.5"
  • Model #: MDD16TSATA25672E
  •  
  • $399.99 
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Dell G16 12TB 0V308G 7.2K RPM SATA 6Gb/s 512e 3.5" PowerEdge Refurbished Hard Drive
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DELL
Refurbished Dell G16 12TB 0V308G 7.2K RPM SATA 6Gb/s 512e 3.5" PowerEdge Refurbished Hard Drive
  • Brand: Dell
  • Series: Generation 14
  • Capacity: 12TB
  • RPM: 7200 RPM
  • Model #: 0V308G-DELLG14
  •  
  • $369.00 
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Dell G13 12TB 0V308G 7.2K RPM SATA 6Gb/s 512e 3.5" PowerEdge Refurbished Hard Drive
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DELL
Refurbished Dell G13 12TB 0V308G 7.2K RPM SATA 6Gb/s 512e 3.5" PowerEdge Refurbished Hard Drive
  • Brand: Dell
  • Series: Generation 13
  • Capacity: 12TB
  • RPM: 7200 RPM
  • Model #: 0V308G-DELLG13
  •  
  • $369.00 
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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