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Seagate BarraCuda ES.2 ST3250310NS 250GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Refurbished Seagate BarraCuda ES.2 ST3250310NS 250GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Average Write Time: 9.5ms
  • Average Latency: 4.16ms
  • Model #: ST3250310NS
  •  
  • $89.95 
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Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Enterprise 3.5" SATA HDD
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Synology HAT5310-20T 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Enterprise 3.5" SATA HDD
  • Height (maximum): 26.1 mm
  • Width (maximum): 101.85 mm
  • Length (maximum): 147 mm
  • Model #: HAT5310-20T
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Seagate BarraCuda 7200.10 ST3250410AS 250GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda 7200.10 ST3250410AS 250GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Average Write Time: 10ms
  • Average Latency: 4.16ms
  • Parts: 3 years limited
  • Model #: ST3250410AS
WD6000HLHX Western Digital 600GB 10000RPM 6Gbps  2.5" SATA HDD Hard Drive
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  • $90.00 
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529FG ST4000NM0023 Dell 4TB 7.2K RPM 6Gb/s 3.5" SAS SERVER HDD Hard Drive
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DELL
529FG ST4000NM0023 Dell 4TB 7.2K RPM 6Gb/s 3.5" SAS SERVER HDD Hard Drive
  • Model #: ST4000NM0023-529FG-0529FG-dell-new-drive
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  • $125.00 
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FW956 0FW956 DELL ST3300555SS 300GB 15K RPM 3Gb/s 3.5" SAS HARD DRIVE W/R Tray
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2TRM4 AL14SEB18EQY Dell ENTERPRISE 1.8TB 10000RPM 12Gbps 2.5" SAS HDD Hard Drive
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  • $128.00 - $145.95
ST4000NM0023 4TB 7.2K SAS 3.5" 6G HDD for Dell  T20 T100 T105 T110
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  • $175.00 
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  • $70.00 - $175.00
TMVN7 Dell 2TB 7.2K SAS 12G 2.5" Near Line 128M Hard Drive 0TMVN7
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DELL
Refurbished TMVN7 Dell 2TB 7.2K SAS 12G 2.5" Near Line 128M Hard Drive 0TMVN7
  • Average Seek Time: 8.5ms
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: TMVN7-REF
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  • $82.00 
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ST3000NM0023-DEL DELL CONSTELLATION ES.3 3TB 7200RPM 3.5-INCH SAS HARD DRIVE
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  • $58.00 
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HGST Ultrastar He12 | HUH721212ALE600 | 0F29603 | 12TB 7200RPM 3.5" SATA Enterprise HDD
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HGST Ultrastar He12 | HUH721212ALE600 | 0F29603 | 12TB 7200RPM 3.5" SATA Enterprise HDD
  • Average Latency: 6Gb/s
  • Usage: For Enterprise Storage
  • Model #: HUH721212ALE600
WD Red Plus WD30EFPX 3TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
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WD Red Plus WD30EFPX 3TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
  • Flash Memory Capacity: Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Model #: WD30EFPX
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Seagate Exos X24 24TB 7200 RPM SATA 512MB Cache 6.0Gb/s 3.5-Inch Enterprise Internal Hard Drives (ST24000NM002H)
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Seagate Exos X24 24TB 7200 RPM SATA 512MB Cache 6.0Gb/s 3.5-Inch Enterprise Internal Hard Drives (ST24000NM002H)
  • Average Latency: 4.16ms
  • Height (maximum): 26.1mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147mm
  • Model #: ST24000NM002H
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Seagate Constellation ES.2 ST33000650SS 3TB 7200 RPM 64MB Cache SAS 6Gb/s 3.5" Enterprise Internal Hard Drive Bare Drive
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Seagate Constellation ES.2 ST33000650SS 3TB 7200 RPM 64MB Cache SAS 6Gb/s 3.5" Enterprise Internal Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Average Write Time: 9.5ms
  • Average Latency: 4.16ms
  • Parts: 2 yrs
  • Model #: ST33000650SS
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
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  • $399.99 
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Dell W69TH - 1TB 3.5" SATA 7.2K 6Gb/s HS Hard Drive
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DELL
Dell W69TH - 1TB 3.5" SATA 7.2K 6Gb/s HS Hard Drive
  • Usage: Ideal for Servers
  • Model #: W69TH
Seagate Exos X14 12TB 7200 RPM SATA 6Gb/s FastFormat 512e/4Kn 3.5-Inch SED Enterprise Hard Drive (ST12000NM0248)
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  • $563.10 
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Dell 600GB SAS 10K 6G 2.5" HDD in Tray ST600MM0006 07YX58 7YX58
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Seagate Exos X14 14TB 7200 RPM 512e/4Kn SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive (ST14000NM0018)
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Seagate Exos X14 14TB 7200 RPM 512e/4Kn SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive (ST14000NM0018)
  • NAND Flash Memory Type: SLC
  • Average Latency: 4.16ms
  • Features: 14TB per drive for 40% more petabytes per rack Industry's lowest power and weight for optimum data center TCO Highest 14TB hard drive performance with enhanced caching, making it perfect for big data applications Hyperscale SATA model tuned for large data transfers PowerBalance feature optimizes IOPS/Watt Helium sealed-drive design with no porosity and uniform density Superior
  • Usage: For Enterprise Storage
  • Model #: ST14000NM0018
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Seagate Exos 7E8 ST4000NM002A 4TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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Seagate
Seagate Exos 7E8 ST4000NM002A 4TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.16ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST4000NM002A
Seagate BarraCuda Pro ST8000DM005 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda Pro ST8000DM005 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Parts: 5 Year
  • Model #: ST8000DM005
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  • $389.10 
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Toshiba MK2576GSX 250 GB 2.5' Internal Hard Drive
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Toshiba MK2576GSX 250 GB 2.5' Internal Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 9.5mm
  • Width (maximum): 69.85mm
  • Length (maximum): 100mm
  • Model #: MK2576GSX
Seagate Exos X18 ST12000NM000J 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
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Seagate Exos X18 ST12000NM000J 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST12000NM000J
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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