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WL 500GB 8MB Cache SATA2 (3.0Gb/s) 3.5" Internal Hard Drive (For Desktop PC & CCTV DVR) - OEM w/1 Year Warranty
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WL 500GB 8MB Cache SATA2 (3.0Gb/s) 3.5" Internal Hard Drive (For Desktop PC & CCTV DVR) - OEM w/1 Year Warranty
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WL500GSA854
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  • $29.99 
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Western Digital AV-GP WD15EVDS 1.5TB 32MB Cache SATA 3.0Gb/s 3.5" Internal AV Hard Drive Bare Drive
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  • $69.95 
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Seagate IronWolf Pro 16TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5" Internal HDD NE-ST16000NE000
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Seagate IronWolf Pro 16TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5" Internal HDD NE-ST16000NE000
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.11mm
  • Model #: NE-ST16000NE000
WL 3TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Desktop Hard Drive (For PC/Mac/DVR) w/1 Year Warranty
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WL 3TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Desktop Hard Drive (For PC/Mac/DVR) w/1 Year Warranty
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WL3000GSA6472-ST
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  • $99.95 
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WESTERN DIGITAL BLUE WD5000AAKX 500GB 7200RPM 6Gb/s 16MB 3.5in SATA HARD DRIVE
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Western WD102KRYZ Digital Gold WD102KRYZ 10 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
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Seagate BarraCuda Pro ST10000DM0004 10TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda Pro ST10000DM0004 10TB 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: 30 DAYS WARRANTY
  • Model #: ST10000DM0004
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WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Surveillance Hard Drive
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WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Surveillance Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD42PURZ
Western Digital WD241PURP 24 TB Hard Drive - 3.5" Internal - SATA (SATA/600) Video - Surveillance Systems, Cloud Storage Device Supported
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Western Digital
Western Digital WD241PURP 24 TB Hard Drive - 3.5" Internal - SATA (SATA/600) Video - Surveillance Systems, Cloud Storage Device Supported
  • Brand: Western Digital
  • Capacity: 24TB
  • Interface: SAS 6Gb/s
  • Part Number: WD241PURP
  • Model #: WD241PURP
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Seagate IronWolf 6TB NAS Hard Drive 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST6000VN0041
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Seagate IronWolf 6TB NAS Hard Drive 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST6000VN0041
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.60mm
  • Length (maximum): 146.99mm
  • Model #: ST6000VN0041
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Dell 401-ABHQ 2.4TB 10000 RPM SAS 12Gb/s 2.5" Internal Hard Drive
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HGST Ultrastar He8 HUH728080AL4204 (0F23654) 8TB 7200 RPM 128MB Cache SAS 12Gb/s 3.5" Helium Platform Enterprise Hard Drive Bare Drive
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HGST Ultrastar He8 HUH728080AL4204 (0F23654) 8TB 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 #: 0F23654
Seagate ST2000NM0135 ST2000NM0135 2 TB Hard Drive - 3.5" Internal - SAS
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Seagate
Refurbished Seagate ST2000NM0135 ST2000NM0135 2 TB Hard Drive - 3.5" Internal - SAS
  • Part Number: ST2000NM0135
  • NAND Flash Memory Type: SLC
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: ST2000NM0135
WD Ultrastar DC HC550 18TB Hard Drive 3.5" Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4)
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WD Ultrastar DC HC550 18TB Hard Drive 3.5" Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4)
  • Recording Technology: CMR
  • Average Latency: 4.16ms
  • Features: Up to 18TB capacity in a standard 3.5-inch form factor Industry's first Energy-Assisted Magnetic Recording technology Industry's first Triple Stage Actuator Leading HelioSeal technology Reliable, field-proven design across five generations HelioSeal design delivers power efficiency (Watts/TB) 2.5M hours MTBF rating
  • Usage: For Enterprise Storage
  • Model #: 0F38459
7FJW4 Dell ST300MP0005 ENT300GB 15K RPM 12Gb/s 2.5" SAS SERVER HDD Hard Drive
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Seagate Exos X18 ST18000NM005J 18TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive, 512E/4KN SED
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Seagate
Seagate Exos X18 ST18000NM005J 18TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive, 512E/4KN SED
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST18000NM005J
WD Purple WD121PURZ 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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WD Purple WD121PURZ 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD121PURZ
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Seagate BarraCuda 7200.9 ST3500641AS-RK 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Retail Kit
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Seagate BarraCuda 7200.9 ST3500641AS-RK 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Retail Kit
  • Height (maximum): 22.23mm
  • Width (maximum): 101.60mm
  • Length (maximum): 146.05mm
  • Model #: ST3500641AS-RK
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  • $141.10 
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Seagate Exos 10E2400 ST600MM0009 600GB 10000 RPM 128MB Cache SAS 12Gb/s 2.5" Internal Hard Drive 512N
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Seagate
Seagate Exos 10E2400 ST600MM0009 600GB 10000 RPM 128MB Cache SAS 12Gb/s 2.5" Internal Hard Drive 512N
  • Height (maximum): 15.00mm
  • Width (maximum): 70.10mm
  • Length (maximum): 100.45mm
  • Model #: ST600MM0009
  • $89.00
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  • $76.00 
  • Save: 14%
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Seagate Exos 7E10 ST8000NM018B 8TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive, 512e/4KN
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Seagate
Seagate Exos 7E10 ST8000NM018B 8TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive, 512e/4KN
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Model #: ST8000NM018B
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Seagate Enterprise Capacity 3.5'' HDD 8TB 7200 RPM 4Kn SAS 12Gb/s 256MB Cache Internal Hard Drive ST8000NM0065
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Seagate Enterprise Capacity 3.5'' HDD 8TB 7200 RPM 4Kn SAS 12Gb/s 256MB Cache Internal Hard Drive ST8000NM0065
  • Average Latency: 4.16ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST8000NM0065
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  • $344.45 
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1T8KW DELL 1.2TB SAS 2.5" 10K 12Gb/s HUC101812CSS204 0B31870 SERVER HDD Gen13
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  • $230.00 
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Seagate Enterprise Capacity 3.5'' HDD 1TB 7200 RPM 512n SAS 12Gb/s 128MB Cache Internal Hard Drive ST1000NM0045
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Seagate Enterprise Capacity 3.5'' HDD 1TB 7200 RPM 512n SAS 12Gb/s 128MB Cache Internal Hard Drive ST1000NM0045
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST1000NM0045
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 ST31000524AS 1TB 7200 RPM 32MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda ST31000524AS 1TB 7200 RPM 32MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 6Gb/s
  • Features: Important Warranty Information This product is end-of-sale and no longer warranted by the manufacturer. Instead, Newegg warranties this product for one year from date of purchase. If you require warranty service after thirty days, please contact Newegg Customer Service, not the manufacturer.
  • Usage: Ideal for Servers
  • Parts: 2 years
  • Model #: ST31000524AS
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SEAGATE ST8000NM001A 8TB 7200 RPM 256MB SAS 3.5
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SEAGATE ST8000NM001A 8TB 7200 RPM 256MB SAS 3.5
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST8000NM001A
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MaxDigitalData 3TB 32MB Cache 5700PM SATA 6.0Gb/s 3.5" Internal Surveillance CCTV DVR Hard Drive (MD3000GSA3257DVR) - 2 Year Warranty
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  • $98.99 
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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