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WD Ultrastar DC HA210 1W10002 2TB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive
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Western Digital
WD Ultrastar DC HA210 1W10002 2TB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.2ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: 1W10002
Seagate ST10000NM0206 Enterprise 10TB SAS 3.5" Internal Hard Drive
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Seagate
Seagate ST10000NM0206 Enterprise 10TB SAS 3.5" Internal Hard Drive
  • NAND Flash Memory Type: SLC
  • Average Latency: 4.16ms
  • Encryption: Maximum Storage Capacity for Highest Rack Space Efficiency: - 10TB per drive* for 25% more petabytes per rack** - Industry's lowest power and weight for optimum data center TCO - Forged, wrought-aluminum base and a helium sealed-drive design with uniform density and no porosity - Superior material and weld-width design for a more robust,
  • Usage: For Enterprise Storage
  • Model #: ST10000NM0206
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
ST3000NM0023 Seagate 9ZM278 3TB 7.2K RPM 6Gb/s 3.5" SAS SERVER HDD Hard Drive
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HGST Ultrastar DC HC570 0F48052 22 TB Hard Drive 3.5" Internal SAS 12Gb/s SAS
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Western Digital AV-GP WD10EURX 1TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Western Digital AV-GP WD10EURX 1TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 6Gb/s
  • Features: Highest capacity for audio/video storage 24x7 reliability Reduced power consumption Quiet IntelliSeek IntelliPower SilkStream IntelliPark Preemptive Wear Leveling (PWL) Advanced Format (AF) 1 million hours MTBF
  • Usage: For Video Surveillance
  • Height (maximum): 26.10mm
  • Model #: WD10EURX
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400-ATJN DELL 1.2TB 10K SAS 3.5" 12Gb HDD KIT FOR R640 R740 R740XD R940 C6420
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  • $195.00 
Seagate Enterprise Capacity 3.5'' HDD 10TB (Helium) 7200 RPM SATA 6Gb/s 256MB Cache Standard 4Kn Internal Hard Drive ST10000NM0186
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Seagate
Seagate Enterprise Capacity 3.5'' HDD 10TB (Helium) 7200 RPM SATA 6Gb/s 256MB Cache Standard 4Kn Internal Hard Drive ST10000NM0186
  • Average Latency: 4.16ms
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST10000NM0186
  •  
  • $499.45 
WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD4003FZEX
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WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD4003FZEX
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD4003FZEX
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Dell 9W5WV ST91000640SS 1TB 7.2K 2.5" 6G SAS HARD DRIVE w/G176J
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Dell 400-APGS - Dell 900GB 2.5" SAS 15K 12Gb/s Hard Drive
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DELL
Dell 400-APGS - Dell 900GB 2.5" SAS 15K 12Gb/s Hard Drive
  • Average Latency: 3Gb/s
  • Model #: 400-ALSE
  •  
  • $244.19 
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WD Gold 2TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 128MB Cache 3.5 Inch - WD2005FBYZ
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WD Gold 2TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 128MB Cache 3.5 Inch - WD2005FBYZ
  • Features: Take on tough workloads; up to 10 times the typical desktop rates Enhanced reliability with up to 2.5M hours MTBF Specifically designed for use in enterprise-class storage systems and data centers Energy-Assisted Magnetic Recording (EAMR) and Triple State Actuator (TSA) (in 16TB capacities and above)
  • Usage: For Enterprise Storage
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Model #: WD2005FBYZ
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WD Black 10TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 256MB Cache 3.5 Inch - WD101FZBX
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WD Black 10TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 256MB Cache 3.5 Inch - WD101FZBX
  • NAND Flash Memory Type: Hard Drives
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Model #: WD101FZBX
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HP 1TB 7.2K SATA 6GB/s 2.5" SFF G8 GEN8 655710-B21 656108-001 614829-003 Hard Drive
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  • $88.95 
  • Free Shipping
SEAGATE ST12000NM005G Exos X16 12TB SATA 6Gb/s 3.5inch Hard drive
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  • $329.00 
  • Free Shipping
HGST 3.5" 4TB SAS 12Gb/s 7.2K RPM 128M 0F22795 512e ISE Internal Enterprise Hard Drive - HUS726040AL5210
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HGST 3.5" 4TB SAS 12Gb/s 7.2K RPM 128M 0F22795 512e ISE Internal Enterprise Hard Drive - HUS726040AL5210
  • NAND Flash Memory Type: SLC
  • Average Latency: 12Gb/s
  • Model #: Newegg_Delete
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  • $135.00 
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SEAGATE - DESKTOP SINGLE ST500VT000 500GB VIDEO 2.5 HDD SATA 5400
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Seagate
SEAGATE - DESKTOP SINGLE ST500VT000 500GB VIDEO 2.5 HDD SATA 5400
  • NAND Flash Memory Type: SLC
  • Model #: ST500VT000
4TB Seagate 3.5 Inch SATA III 6Gb/s 7200RPM 256MB Cache Internal Hard Drive
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Seagate DB35 Series 7200.2 ST3120213ACE 120GB 7200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 3.5" Hard Drive Bare Drive
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  • $94.19 
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HUC101212CSS600 T6TWN Dell 1.2TB 10000RPM 6Gbps 2.5" SAS SERVER Hard Drive
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36RH9 ST1200MM0088 Dell ENTERPRISE 1.2TB 10000RPM 6Gbps 2.5" SAS HDD Hard Drive
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  • $55.00 
  • Free Shipping
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1XJ233-151 Dell 1.8TB 10K SAS 12G SFF Hard Drive
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Dell 2.4TB 10K 12Gbps SAS 2.5 HDD 512e (F9NWJ) New
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DELL
Dell 2.4TB 10K 12Gbps SAS 2.5 HDD 512e (F9NWJ) New
  • NAND Flash Memory Type: Rack
  • Model #: 011110565983
  •  
  • $550.00 
Seagate BarraCuda ES ST3250620NS 250GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda ES ST3250620NS 250GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Average Write Time: 10ms
  • Average Latency: 4.16ms
  • Parts: 5 years limited
  • Model #: ST3250620NS
Seagate BarraCuda 7200.10 ST3250310AS 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda 7200.10 ST3250310AS 250GB 7200 RPM 8MB 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
  • NAND Flash Memory Type: Desktop
  • Model #: ST3250310AS

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