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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 Enterprise NAS HDD 8TB 7200 RPM 256MB Cache SATA 6.0GB/s 3.5" Internal Bare Drive ST8000NE0001
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Seagate Enterprise NAS HDD 8TB 7200 RPM 256MB Cache SATA 6.0GB/s 3.5" Internal Bare Drive ST8000NE0001
  • Average Latency: 4.16ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST8000NE0001
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  • $374.45 
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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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Dell 342-5521 1.2TB 10000 RPM Serial Attached SCSI 2 2.5" Internal Hard Drive Bare Drive
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DELL
Dell 342-5521 1.2TB 10000 RPM Serial Attached SCSI 2 2.5" Internal Hard Drive Bare Drive
  • Average Latency: 12Gb/s
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 342-5521
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Seagate Constellation CS ST1000NC000 1 TB 3.5" Internal Hard Drive
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Seagate BarraCuda 7200.12 ST3500413AS 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda 7200.12 ST3500413AS 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 6Gb/s
  • NAND Flash Memory Type: Desktop
  • Parts: 2 years limited
  • Labor: 2 years limited
  • Model #: ST3500413AS
  • $60.99
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  • $45.00 
  • Save: 26%
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TOSHIBA MK2001TRKB 2TB 7200 RPM 16MB Cache SAS 6Gb/s 3.5" Enterprise Hard Drive Bare Drive
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TOSHIBA MK2001TRKB 2TB 7200 RPM 16MB Cache SAS 6Gb/s 3.5" Enterprise Hard Drive Bare Drive
  • Average Seek Time: 9.5ms
  • Average Latency: 4.17ms
  • NAND Flash Memory Type: Enterprise
  • Model #: MK2001TRKB
Seagate BarraCuda ST2000DM006 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda ST2000DM006 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
  • Brand: Seagate
  • Series: BarraCuda
  • Model: ST2000DM006
  • Capacity: 2TB
  • Model #: ST2000DM006
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Dell 342-2083 450GB 15000 RPM Serial Attached SCSI 3.5" Internal Hard Drive Bare Drive
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Seagate Exos 7E8 ST4000NM003A 4TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive
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Seagate
Seagate Exos 7E8 ST4000NM003A 4TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.16ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST4000NM003A
Seagate Exos 7E8 ST6000NM029A 6TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive
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Seagate
Seagate Exos 7E8 ST6000NM029A 6TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.16ms
  • Height (maximum): 26mm
  • Width (maximum): 102mm
  • Length (maximum): 147mm
  • Model #: ST6000NM029A
WD_Black 6TB Gaming Performance Internal Hard Drive HDD - 7200 RPM, 128 MB Cache, SATA Gb/s, 3.5" - WD6004FZWX (OEM)
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WD_Black 6TB Gaming Performance Internal Hard Drive HDD - 7200 RPM, 128 MB Cache, SATA Gb/s, 3.5" - WD6004FZWX (OEM)
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD6004FZWX
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Seagate BarraCuda ES.2 ST31000340NS 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda ES.2 ST31000340NS 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Enterprise
  • Height (maximum): 26.11mm
  • Width (maximum): 101.60mm
  • Model #: ST31000340NS
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  • $90.00 
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Seagate BarraCuda ES ST3750640NS 750GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda ES ST3750640NS 750GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Average Write Time: 9.5ms
  • Average Latency: 4.16ms
  • 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. Breakthrough Capacity Industry's Highest Reliability Optimized For Enterprise Storage Environments
  • Model #: ST3750640NS
  • $85.18
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  • $85.00 
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Seagate Constellation ES ST3500514NS 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Enterprise Internal Hard Drive Bare Drive
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Seagate Constellation ES ST3500514NS 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Enterprise Internal Hard Drive Bare Drive
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Enterprise
  • Parts: 2 YRS
  • Labor: 2 YRS
  • Model #: ST3500514NS
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  • $85.00 
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Seagate BarraCuda 7200.10 ST3500630AS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive (Perpendicular Recording) Bare Drive
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  • $89.99
  •  
  • $55.00 
  • Save: 38%
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Seagate Constellation ES ST31000424SS 1TB 7200 RPM 16MB Cache SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate Constellation ES ST31000424SS 1TB 7200 RPM 16MB Cache SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 6Gb/s
  • NAND Flash Memory Type: Enterprise
  • Model #: ST31000424SS
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  • $97.00 
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Seagate BarraCuda 7200.9 ST3160812AS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda 7200.9 ST3160812AS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Latency: 4.16ms
  • Parts: 5 years limited
  • Labor: 5 years limited
  • Model #: ST3160812AS
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  • $60.50 
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Seagate Constellation CS ST1000NC001 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Enterprise Internal Hard Drive Bare Drive
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Seagate
Seagate Constellation CS ST1000NC001 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Enterprise Internal Hard Drive Bare Drive
  • Average Seek Time: 9.5ms
  • Average Write Time: 10.5ms
  • Parts: 3 Year Warranty from Reseller
  • Labor: 3 Year Warranty from Reseller
  • Model #: ST1000NC001
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  • $78.00 
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Seagate BarraCuda XT ST33000651AS 3TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda XT ST33000651AS 3TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Average Write Time: 9.5ms
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Desktop
  • Model #: ST33000651AS
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  • $199.10 
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Seagate BarraCuda LP ST31000520AS 1TB 5900 RPM 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda LP ST31000520AS 1TB 5900 RPM 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Latency: 5.1ms
  • 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. The Seagate Barracuda LP drive is designed to meet a
  • Model #: ST31000520AS
Seagate Cheetah NS ST3400755SS 400GB 10000 RPM 16MB Cache SAS 3Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate
Seagate Cheetah NS ST3400755SS 400GB 10000 RPM 16MB Cache SAS 3Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 3.9ms
  • Average Write Time: 4.2ms
  • Average Latency: 2.98ms
  • Height (maximum): 26.11mm
  • Model #: ST3400755SS
  • $110.50
  •  
  • $75.10 
  • Save: 32%
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Seagate BarraCuda 7200.10 ST3750640AS 750GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive (Perpendicular Recording) Bare Drive
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Seagate BarraCuda 7200.10 ST3750640AS 750GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive (Perpendicular Recording) Bare Drive
  • Average Seek Time: 8.5ms
  • Average Write Time: 10ms
  • Average Latency: 4.16ms
  • Parts: 5 years limited
  • Model #: ST3750640AS
Seagate Constellation ES ST3500414SS 500GB 7200 RPM 16MB Cache SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate Constellation ES ST3500414SS 500GB 7200 RPM 16MB Cache SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 6Gb/s
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: ST3500414SS
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  • $140.00 
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Seagate BarraCuda 7200.11 ST3320613AS 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda 7200.11 ST3320613AS 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 4.16ms
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: ST3320613AS
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  • $59.00 
  • Free Shipping
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Seagate Pipeline HD ST3320311CS 320GB 5900 RPM 8MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $90.19 
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Seagate Exos 7E10 ST2000NM018B 2 TB Hard Drive Internal SAS 12Gb/s SAS
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Seagate
Seagate Exos 7E10 ST2000NM018B 2 TB Hard Drive Internal SAS 12Gb/s SAS
  • NAND Flash Memory Type: SLC
  • Parts: 5 Year
  • Model #: ST2000NM018B
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Seagate BarraCuda ST3750525AS 750GB 7200 RPM 32MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $87.19 
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Seagate BarraCuda 7200.11 ST3160813AS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda 7200.11 ST3160813AS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 4.16ms
  • Parts: 2 years limited
  • Labor: 2 years limited
  • Model #: ST3160813AS
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Seagate ST300MP0106 Enterprise 300GB SAS 2.5" Internal Hard Drive
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Seagate
Seagate ST300MP0106 Enterprise 300GB SAS 2.5" Internal Hard Drive
  • NAND Flash Memory Type: SLC
  • Usage: For Enterprise Storage
  • Model #: ST300MP0106
Seagate BarraCuda 7200.10 ST380215AS 80GB 7200 RPM 2MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda 7200.10 ST380215AS 80GB 7200 RPM 2MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 4.16ms
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: ST380215AS
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  • $71.00 
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Seagate Cheetah ST3300655SS 300GB 15000 RPM 16MB Cache SAS 3Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate ST600MM0158 600GB 10000 RPM 128MB Cache SAS 12Gb/s 2.5" Internal Hard Drive Bare Drive
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Seagate
Seagate ST600MM0158 600GB 10000 RPM 128MB Cache SAS 12Gb/s 2.5" Internal Hard Drive Bare Drive
  • Average Latency: 12Gb/s
  • Height (maximum): 15.00mm
  • Width (maximum): 70.10mm
  • Length (maximum): 100.45mm
  • Model #: ST600MM0158
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Seagate Cheetah 15K.6 ST3300656SS 300GB 15000 RPM 32MB Cache SAS 3.5" Internal Hard Drive Bare Drive
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  • $77.63
  •  
  • $65.00 
  • Save: 16%
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Hitach Deskstar 7K1000.C HDS721050CLA662 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Refurbished Hitach Deskstar 7K1000.C HDS721050CLA662 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 8.9ms
  • Windows Vista: Works with Windows Vista
  • Model #: HDS721050CLA662
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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