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Seagate 5TB Enterprise Desktop Hard Disk Drive - 7200 RPM SATA 6.0Gb/s 128MB 3.5" ST5000NM0084
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Seagate
Seagate 5TB Enterprise Desktop Hard Disk Drive - 7200 RPM SATA 6.0Gb/s 128MB 3.5" ST5000NM0084
  • Average Latency: 4.16ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST5000NM0084
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Seagate IronWolf ST2000VN004 2TB 5900 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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Seagate
Seagate IronWolf ST2000VN004 2TB 5900 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Average Seek Time: <12.0ms
  • Average Write Time: <12.0ms
  • Average Latency: 5.1ms
  • Height (maximum): 20.20mm
  • Model #: ST2000VN004
  •  
  • $200.00 
  • Free Shipping
Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda ST16000DM001 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST16000DM001
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WD Purple Pro WD141PURP 14TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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WD Purple Pro WD141PURP 14TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD141PURP
  • $555.00 - $590.00
WD Purple 14TB 3.5" SATA 7200rpm Internal Hard Drive WD140PURZ
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WD Purple 14TB 3.5" SATA 7200rpm Internal Hard Drive WD140PURZ
  • Average Latency: 6Gb/s
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD140PURZ
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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Seagate SV35.6 ST2000VX000 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Surveillance Hard Drive Bare Drive
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Seagate SV35.6 ST2000VX000 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Surveillance Hard Drive Bare Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.60mm
  • Length (maximum): 146.99mm
  • Model #: ST2000VX000
Seagate BarraCuda ST4000DM005 4TB 64MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda ST4000DM005 4TB 64MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.60mm
  • Length (maximum): 146.99mm
  • Parts: 30 DAYS WARRANTY
  • Model #: ST4000DM005
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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
Seagate Exos X16 ST14000NM001G 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drive, 512E
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Seagate
Seagate Exos X16 ST14000NM001G 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drive, 512E
  • Average Latency: 4.16ms
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST14000NM001G
WD Ultrastar DC HC530 14TB SATA 6Gb/s 3.5-Inch Data Center HDD - WUH721414ALE604 (0F31156)
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Refurbished WD Ultrastar DC HC530 14TB SATA 6Gb/s 3.5-Inch Data Center HDD - WUH721414ALE604 (0F31156)
  • Part Number: 0F31156
  • Features: Helium sealed, secure erase, power disable, TDMR
  • Usage: For Enterprise Storage
  • Parts: 5 Years Warranty
  • Model #: WUH721414ALE604-0F31156
TOSHIBA DT01ACA100 1TB 7200 RPM 32MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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TOSHIBA DT01ACA100 1TB 7200 RPM 32MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.17ms
  • Parts: 2 Year
  • Labor: 30 days warranty
  • Model #: HDKPC03 DUP
  •  
  • $50.00 
  • Free Shipping
Seagate Exos 7E8 ST8000NM001A 8TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive
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Seagate
Seagate Exos 7E8 ST8000NM001A 8TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST8000NM001A
HGST HDN724040ALE640 - 4TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive
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HGST HDN724040ALE640 - 4TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive
  • NAND Flash Memory Type: Others
  • Model #: HDN724040ALE640
Seagate SkyHawk AI ST14000VE0008 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate SkyHawk AI ST14000VE0008 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST14000VE0008
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ST1000NM0033 Seagate 1TB 7.2K RPM SATA 6Gbps 3.5" LFF 128MB Cache Hard Drive
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Seagate
Refurbished ST1000NM0033 Seagate 1TB 7.2K RPM SATA 6Gbps 3.5" LFF 128MB Cache Hard Drive
  • Average Latency: 4.16ms
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: ST1000NM0033
Seagate Exos 16TB Enterprise HDD X18 SATA 6Gb/s 512e/4Kn 7200 RPM 256MB Cache 3.5" Internal Hard Drive (ST16000NM000J)
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Seagate Exos 16TB Enterprise HDD X18 SATA 6Gb/s 512e/4Kn 7200 RPM 256MB Cache 3.5" Internal Hard Drive (ST16000NM000J)
  • NAND Flash Memory Type: Hard Drive
  • Average Latency: 4.16ms
  • Features: Market-leading 16TB HDD offering the highest capacity available for more petabytes per rack* Highly reliable performance with enhanced caching, making it the logical choice for cloud data centre and massive scale-out data centre applications Hyperscale SATA model tuned for large data transfers and low latency PowerBalance feature optimises Watts/TB Maximise total cost of ownership
  • Usage: For Enterprise Storage
  • Model #: ST16000NM000J
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Seagate ST6000DX000 6TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate ST6000DX000 6TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: <8.5 µs typical
  • Average Write Time: <9.5 µs typical
  • Average Latency: 4ms
  • Height (maximum): 1.03"
  • Model #: ST6000DX000
WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 256MB Cache 3.5 Inch - WD4005FZBX
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WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 256MB Cache 3.5 Inch - WD4005FZBX
  • NAND Flash Memory Type: Hard Drive
  • Recording Technology: CMR
  • Features: Inspiring performance and capacity WD Black performance storage is designed to enhance your PC experience across heavier computing tasks whether you are a digital artist, video editor, photographer, or gamer. Available with an impressive 256MB of DRAM cache on higher capacity models, the WD Black PC drive is optimized for drive
  • Usage: Gaming Hard Drives
  • Model #: WD4005FZBX
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WL 3TB 64MB Cache 5400RPM SATA III (6.0Gb/s) (Low Power & Heavy Duty) 3.5" Internal Hard Drive (NAS & CCTV DVR) w/1 Year Warranty
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WL 3TB 64MB Cache 5400RPM SATA III (6.0Gb/s) (Low Power & Heavy Duty) 3.5" Internal Hard Drive (NAS & CCTV DVR) w/1 Year Warranty
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WL3000GSA6454-DVR
  •  
  • $99.99 
  • Free Shipping
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
  •  
  • $89.95 
  • Free Shipping
TOSHIBA DT01ACA300 3TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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TOSHIBA DT01ACA300 3TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 4.17ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Model #: DT01ACA300
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WD Blue 500GB Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 16MB Cache 3.5 Inch - WD5000AAKX
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WD Blue 500GB Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 16MB Cache 3.5 Inch - WD5000AAKX
  • Average Latency: 6Gb/s
  • Height (maximum): 25.40mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD5000AAKX
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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
  •  
  • $77.50 
  • Free Shipping
Seagate Exos Enterprise Capacity 3.5'' HDD 10TB (Helium) 7200 RPM SATA 6Gb/s 256MB Cache Hyperscale 512e Internal Hard Drive ST10000NM0016
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Seagate Exos Enterprise Capacity 3.5'' HDD 10TB (Helium) 7200 RPM SATA 6Gb/s 256MB Cache Hyperscale 512e Internal Hard Drive ST10000NM0016
  • Average Latency: 4.16ms
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST10000NM0016
Western Digital RE3 WD5002ABYS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Western Digital RE3 WD5002ABYS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Latency: 4.2ms
  • Parts: 5 years limited
  • Labor: 5 years limited
  • Model #: WD5002ABYS
  •  
  • $59.00 
  • Free Shipping
WD Gold 16TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 512MB Cache 3.5 Inch - NE-WD161KRYZ
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WD Gold 16TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 512MB Cache 3.5 Inch - NE-WD161KRYZ
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD161KRYZ
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WD Gold WD203KRYZ 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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WD Gold WD203KRYZ 20TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 147.00mm
  • Length (maximum): 101.60mm
  • Model #: WD203KRYZ
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Seagate SkyHawk AI ST8000VE001 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate SkyHawk AI ST8000VE001 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST8000VE001
WD RE4 WD2003FYYS 2TB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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WD RE4 WD2003FYYS 2TB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Parts: 5 Year
  • Model #: WD2003FYYS
  • $90.00 - $105.00
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WD Blue WD80EAZZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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WD Blue WD80EAZZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD80EAZZ

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