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WL 2 Terabyte (2TB) 64MB Cache 7200RPM SATA III (6.0Gb/s) 3.5" Internal Destkop Hard Drive (PC/Mac/CCTV DVR)- w/ 1 Year Warranty
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WL 2 Terabyte (2TB) 64MB Cache 7200RPM SATA III (6.0Gb/s) 3.5" Internal Destkop Hard Drive (PC/Mac/CCTV DVR)- w/ 1 Year Warranty
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WL2000SATA6472-S3
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  • $79.99 
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HNWHH HUS722T1TALA600 Dell EMC 1TB 7.2K RPM 6Gbps 3.5" SATA HDD Hard Drive
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  • $69.00 
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Dell 4 TB Hard Drive 3.5" Internal SATA SATA/600 400AUUX
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WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 256MB Cache 3.5 Inch WD63PURZ
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WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 256MB Cache 3.5 Inch WD63PURZ
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD63PURZ
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WD Red 6TB NAS Internal Hard Drive - 5400 RPM Class, SATA 6Gb/s, SMR, 256MB Cache, 3.5" - WD60EFAX
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WD Red 6TB NAS Internal Hard Drive - 5400 RPM Class, SATA 6Gb/s, SMR, 256MB Cache, 3.5" - WD60EFAX
  • Recording Technology: SMR
  • Features: Specifically designed for use in NAS systems with up to 8 bays Supports up to 180 TB/yr workload rate NASware technology for compatibility Small and home office NAS systems in a 24x7 environment
  • Usage: For NAS systems
  • Height (maximum): 26.10mm
  • Model #: WD60EFAX
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WD Black 500GB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD5003AZEX
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Seagate Exos 10E2400 1.8TB 10K RPM SAS 12Gb/s 256MB Cache 2.5-Inch Enterprise Hard Drive (ST1800MM0129)
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Seagate
Seagate Exos 10E2400 1.8TB 10K RPM SAS 12Gb/s 256MB Cache 2.5-Inch Enterprise Hard Drive (ST1800MM0129)
  • NAND Flash Memory Type: Hard Drive
  • Average Latency: 12Gb/s
  • Usage: For Enterprise Storage
  • Model #: ST1800MM0129
ST1000DM003 Seagate 9YN162 1TB 7.2K RPM 6Gb/s 3.5" SATA DESKTOP HDD Hard Drive
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WL 120GB 8MB 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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  • $18.99 
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Seagate IronWolf Pro ST18000NT001 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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Seagate IronWolf Pro ST18000NT001 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST18000NT001
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0H8DVC Dell ST9300653SS 300GB 15K RPM 6Gb/s 64MB SAS 2.5" HDD Hard Drive W/Caddy
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WL 2 Terabyte (2TB) 64MB Cache 7200RPM SATA2 (3.0Gb/s) 3.5" Internal Destkop Hard Drive (PC/Mac/CCTV DVR)- w/ 1 Year Warranty
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WL 2 Terabyte (2TB) 64MB Cache 7200RPM SATA2 (3.0Gb/s) 3.5" Internal Destkop Hard Drive (PC/Mac/CCTV DVR)- w/ 1 Year Warranty
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WL2000GSA6472
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  • $77.50 
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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 IronWolf Pro 8TB NAS Hard Drive 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST8000NE0004
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Seagate IronWolf Pro 8TB NAS Hard Drive 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST8000NE0004
  • Average Latency: 4.16ms
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST8000NE0004
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  • $500.00 
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WD Red Plus 8TB NAS Hard Disk Drive - 5640 RPM Class SATA 6Gb/s, CMR, 128MB Cache, 3.5 Inch - WD80EFZX
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Western Digital
WD Red Plus 8TB NAS Hard Disk Drive - 5640 RPM Class SATA 6Gb/s, CMR, 128MB Cache, 3.5 Inch - WD80EFZX
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD80EFZX
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  • $454.45 
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Seagate Exos Enterprise Capacity 3.5'' HDD 4TB 7200 RPM 512n SATA 6Gb/s 128MB Cache Internal Hard Drive ST4000NM0035
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Seagate Exos Enterprise Capacity 3.5'' HDD 4TB 7200 RPM 512n SATA 6Gb/s 128MB Cache Internal Hard Drive ST4000NM0035
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: SLC
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST4000NM0035
Seagate Exos 7E8 ST6000NM030A 6TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate
Seagate Exos 7E8 ST6000NM030A 6TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 4.16ms
  • Height (maximum): 26.1mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.0mm
  • Model #: ST6000NM030A
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  • $200.00 
  • Free Shipping
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Seagate IronWolf Pro 4TB NAS Hard Drive 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST4000NE0025
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Seagate IronWolf Pro 4TB NAS Hard Drive 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST4000NE0025
  • Average Latency: 4.16ms
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST4000NE0025
Seagate BarraCuda 7200.10 ST3320620A 320GB 7200 RPM 16MB Cache IDE Ultra ATA100 / ATA-6 3.5" Hard Drive (Perpendicular Recording) Bare Drive
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Seagate BarraCuda 7200.10 ST3320620A 320GB 7200 RPM 16MB Cache IDE Ultra ATA100 / ATA-6 3.5" Hard Drive (Perpendicular Recording) Bare Drive
  • Average Seek Time: 11ms
  • Average Write Time: 12ms
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Model #: ST3320620A
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MaxDigitalData 4TB 64MB Cache 5900PM SATA 6.0Gb/s 3.5" Internal Surveillance CCTV DVR Hard Drive (MD4000GSA6459DVR) - w/ 2 Year Warranty
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MaxDigitalData 4TB 64MB Cache 5900PM SATA 6.0Gb/s 3.5" Internal Surveillance CCTV DVR Hard Drive (MD4000GSA6459DVR) - w/ 2 Year Warranty
  • Parts: 2 Years Warranty from Reseller
  • Labor: 2 Years Warranty from Reseller
  • Model #: MD4000GSA6459DVR
  •  
  • $129.99 
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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
Toshiba MG08ACA16TE MG08 MG08ACA16TA 16 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
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Refurbished Toshiba MG08ACA16TE MG08 MG08ACA16TA 16 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
  • Part Number: MG08ACA16TE
  • NAND Flash Memory Type: SLC
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: MG08ACA16TE
EPOS | SENNHEISER IMPACT D 10 USB ML - US II Headset
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EPOS | SENNHEISER IMPACT D 10 USB ML - US II Headset
  • NAND Flash Memory Type: Headset
  • Model #: 840064408011
  • $234.99
  •  
  • $200.99 
  • Save: 14%
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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