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Dell 342-0002 - 2TB 3.5" Near Line SAS 7.2K 6Gb/s HS Hard Drive
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ST900MM0026 Seagate 900GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive W/ZERO HOURS
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  • $90.00 
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Seagate ST380013AS 9W2812-351 80GB 7.2K RPM 1.5Gbps 3.5" SATA HDD Hard Drive
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Seagate Cheetah 15k.7 St3600057ss 600 Gb 3.5 Internal Hard Drive - SAS - 15000-16 Mb Buffer - Ho
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  • $99.00 - $115.00
ST1200MM0007 Seagate 1DA200 1.2TB 10KRPM 6Gb/s 2.5" SAS HDD Hard Drive - (0 HRS)
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  • $49.00 
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Dell NRG1W 2 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
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DELL
Dell NRG1W 2 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
  • Usage: Ideal for Servers
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: NRG1W
ST3250310AS Seagate 9EU132 BARRACUDA 250GB 7200RPM 3Gbps 3.5"SATA HDD Hard Drive
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0-HOURS ST9146852SS Seagate 9FU066 146GB 15K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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ST3450857SS Seagate 9FM066-038 450GB 15K RPM 6Gb/s 3.5"SAS SERVER HDD Hard Drive
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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
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  • $79.99 
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Dell 0W347K 600GB 15K 6G 32MB 3.5" SAS HDD HARD DRIVE ST3600057SS W/ Tray
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DELL
Dell 0W347K 600GB 15K 6G 32MB 3.5" SAS HDD HARD DRIVE ST3600057SS W/ Tray
  • Parts: 30 days warranty
  • Labor: 30 days warranty
  • Model #: CWH-254413314414
ST2000NM0105 Seagate ENT 2TB 3.5" SATA 7.2K RMP 6G/s Hard Drive
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Seagate CHEETAH ST3300657SS 9FL066-005 300GB 15KRPM 6Gb/s 3.5"SAS HDD Hard Drive
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  • $68.00 
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Seagate ST300MM0006 9WE066-175 300GB 10000RPM 6Gbps 2.5" SAS HDD Hard Drive - (ZERO HOURS)
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  • $47.88 
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Dell Yvmkx  250Gb 7200Rpm Serial Ata600(Sata6gbps) 3.5Inch Internal Hard Disk Drive-Yvmkx
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DELL
Dell Yvmkx 250Gb 7200Rpm Serial Ata600(Sata6gbps) 3.5Inch Internal Hard Disk Drive-Yvmkx
  • NAND Flash Memory Type: SLC
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: YVMKX
Dell TMVN7 - Dell 2TB 2.5" Nearline SAS 7.2K 12Gb/s Hard Drive
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DELL
Dell TMVN7 - Dell 2TB 2.5" Nearline SAS 7.2K 12Gb/s Hard Drive
  • Usage: For Enterprise Storage
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: TMVN7
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ST4000NM0023 Seagate 9ZM270 4TB 7200RPM 6Gbps  3.5" SAS HDD Hard Drive
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Seagate
ST4000NM0023 Seagate 9ZM270 4TB 7200RPM 6Gbps 3.5" SAS HDD Hard Drive
  • Model #: ST4000NM0023-9ZM270-seagate-new-zerohrs
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Seagate SAVVIO ST600MM0006 9WG066 600GB 10000RPM 6Gbps 2.5" SAS HDD Hard Drive
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0-HOURS ST9600205SS 9TG066 Seagate 600GB 10000RPM 6Gbps 2.5" SAS HDD Hard Drive
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HGST Ultrastar A7K2000 0F11000 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $35.00 
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00NA492 00NA491 00NA495 IBM 1TB 7.2K RPM 12Gb/s NL 2.5" SAS HDD Hard Drive
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Western Digital Ultrastar DC HC530 WUH721414AL4204 0F31002 14TB 7.2K RPM SAS 12Gb/s 4Kn 3.5in Hard Drive
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Western Digital
Refurbished Western Digital Ultrastar DC HC530 WUH721414AL4204 0F31002 14TB 7.2K RPM SAS 12Gb/s 4Kn 3.5in Hard Drive
  • Part Number: WUH721414AL4204
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: WUH721414AL4204
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  • $309.00 
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HGST Ultrastar He8 HUH728060AL4200 (0F23650) 6TB 7200 RPM 128MB Cache SAS 12Gb/s 3.5" Helium Platform Enterprise Hard Drive Bare Drive
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HGST Ultrastar He8 HUH728060AL4200 (0F23650) 6TB 7200 RPM 128MB Cache SAS 12Gb/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 #: 0F23650

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