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WD RE WD1003FBYX 1 TB 3.5" Internal Hard Drive
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Western Digital
Refurbished WD RE WD1003FBYX 1 TB 3.5" Internal Hard Drive
  • Brand: Western Digital
  • Series: RE
  • Capacity: 1TB
  • RPM: 7200 RPM
  • Model #: WD1003FBYX-RF
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  • $39.99 
Seagate BarraCuda 7200.7 ST340014A 40GB 7200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 3.5" Hard Drive Bare Drive
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Seagate BarraCuda 7200.7 ST340014A 40GB 7200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: ST340014A
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  • $95.10 
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1XH230-150 Dell 1.2TB 10K SAS 12G SFF Hard Drive
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ST2000NM0011 Seagate 2TB SATA 7.2K RPM 6Gb/s 3.5" Hard Drive
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Hitachi (0A38876) 1TB 32MB Cache 7200RPM SATA2 (3.0Gbps) 3.5" (Heavy Duty) Hard Drive NAS, RAID, CCTV DVR, PC/Mac - OEM w/ 1 Year Warranty
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  • $50.00 
  • $10.99 Shipping
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9ZM170-136 Dell 4TB 7.2K SATA 6G LFF Hard Drive
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Seagate Exos 7E10 ST4000NM001B 4TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive
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Seagate
Seagate Exos 7E10 ST4000NM001B 4TB 7200 RPM 256MB Cache SAS 12Gb/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 #: ST4000NM001B
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Seagate BarraCuda 7200.11 ST3750330AS 750GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda 7200.11 ST3750330AS 750GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: ST3750330AS
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  • $43.00 
  • $10.99 Shipping
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WD Gold 14TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 512MB Cache 3.5 Inch - WD141KRYZ
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WD Gold 14TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 512MB Cache 3.5 Inch - WD141KRYZ
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD141KRYZ
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WD Gold 8TB Enterprise Class Hard Disk Drive - 7200 RPM SATA 6.0Gb/s 256MB Cache  3.5" Hard Drives - WD8005FRYZ
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WD Gold 8TB Enterprise Class Hard Disk Drive - 7200 RPM SATA 6.0Gb/s 256MB Cache 3.5" Hard Drives - WD8005FRYZ
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD8005FRYZ
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ST2000NM0001 Seagate 9YZ268-001 2TB 7200RPM 6Gbps 3.5" SAS HDD Hard Drive
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MaxDigitalData 3TB 32MB Cache 5700PM SATA 6.0Gb/s 3.5" Internal Surveillance CCTV DVR Hard Drive (MD3000GSA3257DVR) - 2 Year Warranty
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MaxDigitalData 3TB 32MB Cache 5700PM SATA 6.0Gb/s 3.5" Internal Surveillance CCTV DVR Hard Drive (MD3000GSA3257DVR) - 2 Year Warranty
  • Parts: 2 Years Warranty from Reseller
  • Labor: 2 Years Warranty from Reseller
  • Model #: MD3000GSA3257DVR
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  • $98.99 
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Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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Seagate
Seagate Exos X20 ST18000NM003D 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.16ms
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST18000NM003D
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WD10EURX Western Digital 1TB 5400RPM 6Gbps 3.5" SATA HDD Hard Drive
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  • $98.95 
  • Free Shipping
ST33000650SS Seagate 9SM260-090 ES.2 3TB 7200RPM 6Gbps 3.5" SAS Hard Drive
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HPE ISS 872491-B21 4TB SATA 7.2K LFF SC DS HDD
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HPE ISS 872491-B21 4TB SATA 7.2K LFF SC DS HDD
  • NAND Flash Memory Type: Hard Drive
  • Average Latency: 6Gb/s
  • Model #: 872491-B21
DELL 1TB 7200RPM 6GB PER SECOND SATA 3.5 INCH HARD DRIVE  NEW BULK BARE DRIVE  3 YEAR WARRANTY THRU TECH EXPERTS
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DELL
DELL 1TB 7200RPM 6GB PER SECOND SATA 3.5 INCH HARD DRIVE NEW BULK BARE DRIVE 3 YEAR WARRANTY THRU TECH EXPERTS
  • Features: Hard Drive
  • Usage: Ideal for Servers
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 740YX
Dell 0X162K - 146GB 2.5" SAS 15K 6Gb/s HS Hard Drive
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DELL
Dell 0X162K - 146GB 2.5" SAS 15K 6Gb/s HS Hard Drive
  • NAND Flash Memory Type: SLC
  • Average Latency: 12Gb/s
  • Usage: Ideal for Servers
  • Model #: 0X162K
Dell 55H49 - Dell 3TB 3.5" SAS 7.2K 6Gb/s Hard Drive
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DELL
Dell 55H49 - Dell 3TB 3.5" SAS 7.2K 6Gb/s Hard Drive
  • NAND Flash Memory Type: SLC
  • Model #: 55H49
Seagate 20TB Exos X24 HDD 3.5 SAS 7200 ISE Bare Hard Drive
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Seagate BarraCuda ST2000DM006 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda ST2000DM006 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
  • Brand: Seagate
  • Series: BarraCuda
  • Model: ST2000DM006
  • Capacity: 2TB
  • Model #: ST2000DM006
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Western Digital RE4 WD2003FYYS 2 TB 3.5' Internal Hard Drive
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HPE 1.20 TB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS) - Server Device Supported - 10000rpm
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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