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W1C90 Dell 6TB SATA 3.5" 7.2K 6Gb Server Hard Drive ST6000NM0024 0W1C90
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  • $299.00 
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Seagate BarraCuda 7200.11 ST31500341AS 1.5TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda LP ST31500541AS 1.5TB 5900 RPM 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda LP ST31500541AS 1.5TB 5900 RPM 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Brand: Seagate
  • Series: BarraCuda LP
  • Model: ST31500541AS
  • Capacity: 1.5TB
  • Model #: ST31500541AS
Maxtor DiamondMax 10 6L200P0 200GB 7200 RPM 8MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
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Maxtor DiamondMax 10 6L200P0 200GB 7200 RPM 8MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
  • Average Seek Time: 9ms
  • Average Latency: 4.17ms
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: 6L200P0
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WL 80GB 2MB Cache 7200RPM SATA2 3.5" Internal Desktop Hard Drive (For PC/Mac, DELL, Compaq, HP, ASUS, IBM, eMachine, Gateway) - 1 Year Warranty
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  • $26.99 
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WD RE WD1004FBYZ 1TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Datacenter Capacity HDD Bare Drive
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WD RE WD1004FBYZ 1TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Datacenter Capacity HDD Bare Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD1004FBYZ
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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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WD1003FBYZ-010FB0 - Western Digital RE 1TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
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  • $80.00 
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WD Ultrastar DC HC530 14TB SATA 3.5-Inch Enterprise HDD  WUH721414ALE604
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  • $544.45 
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Seagate BarraCuda 3.5" 500GB HDD 7200 RPM 32MB Cache SATA 6.0Gb/s -Tested in healthy condition (ST500DM009)
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  • $39.99 
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342-5274 4TB 7200RPM SATA 3.5Inch Dell Hard Drive
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  • $100.00 
BUFFALO 2TB Replcement  HD TeraStation Model OP-HD2.0BST-3Y
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  • $126.99 
  • $17.02 Shipping
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ST2000NX0253 Seagate 2TB 7.2K RPM SATA 6Gbps 2.5" SFF 128MB Cache Hard Drive
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Seagate
Refurbished ST2000NX0253 Seagate 2TB 7.2K RPM SATA 6Gbps 2.5" SFF 128MB Cache Hard Drive
  • Brand: Seagate
  • Part Number: ST2000NX0253
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: ST2000NX0253-Ref
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  • $80.00 
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Seagate Exos X16 ST16000NM004G 16TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Hard Drives, 512E/4KN, SED
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Seagate
Seagate Exos X16 ST16000NM004G 16TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Hard Drives, 512E/4KN, SED
  • Average Latency: 4.16ms
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST16000NM004G
Seagate Exos X18 ST12000NM004J 12TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Hard Drives
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Seagate
Seagate Exos X18 ST12000NM004J 12TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Hard Drives
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST12000NM004J
Western Digital BLUE WD5000AAKX 500GB 7200RPM 6Gb/s 3.5" SATA Hard Drive
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  • $52.00 
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0-HOURS WD5000LPLX Western Digital 500GB 7.2K RPM 6Gb/s 2.5" SATA HDD Hard Drive
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  • $48.00 
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HGST HUS722T1TALA600 - HGST 1TB 3.5" SATA 6Gb/s Hard Drive
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  • $65.00 
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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
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  • $399.99 
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ST1200MM0088 Seagate 1FF200-175 1.2TB 10K RPM 12Gb/s 2.5" SAS Hard Drive
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5R6CX 05R6CX Dell MBF2600RC 600GB 10000RPM 6Gbps 2.5" SAS SERVER HDD Hard Drive
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Hitachi HUA721010KLA330 1TB 32MB 7200RPM Enterprise Grade 3.5" SATA2 Hard Drive
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Hitachi HUA721010KLA330 1TB 32MB 7200RPM Enterprise Grade 3.5" SATA2 Hard Drive
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: C8082-121103509136
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  • $70.00 
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Seagate Barracuda ST2000DM001 2 TB 3.5 Internal Hard Drive
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  • $131.99 
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1.2TB Dell 10K RPM SAS 12GB/s 2.5" Hot Swap HDD For R640 R740 R740XD R940 C6420 MD1400 MD1420
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DELL
1.2TB Dell 10K RPM SAS 12GB/s 2.5" Hot Swap HDD For R640 R740 R740XD R940 C6420 MD1400 MD1420
  • NAND Flash Memory Type: SLC
  • Average Latency: 12Gb/s
  • Model #: G2G54
ST2000NM0033 Seagate 2TB 7.2K RPM 6Gb/s 3.5" SATA HDD Hard Drive (ST2000NM0033)
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  • $79.95 
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WD Blue 6TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD60EZRZ
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WD Blue 6TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD60EZRZ
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD60EZRZ
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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:

Keith V.
4/9/2026 4:20:16 PM
High Capacity Plug and Play Drive

“ SATA so it plugs right into my old media server ”

Seagate BarraCuda ST24000DM001 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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
1/17/2026 7:23:35 PM
Works great if not DOA

“ I initially purchased two drives to replace two old WD 6TB drives (one died before Xmas) in a WD NAS. ”

WD Red Plus 10TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD100EFGX