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Seagate BarraCuda Pro ST8000DM0004 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda Pro ST8000DM0004 8TB 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
  • Model #: ST8000DM0004
Western Digital Ultrastar 14TB DC HC500 7200 RPM SATA 6.0Gb/s 3.5" Data Center Internal Hard Disk Drive - 0F31284
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Western Digital Ultrastar 14TB DC HC500 7200 RPM SATA 6.0Gb/s 3.5" Data Center Internal Hard Disk Drive - 0F31284
  • Average Latency: 6Gb/s
  • NAND Flash Memory Type: Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Model #: 0F31284
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Dell-IMSourcing 50XV4 1 TB Hard Drive - 3.5" Internal - SATA (SATA/300)
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DELL
Dell-IMSourcing 50XV4 1 TB Hard Drive - 3.5" Internal - SATA (SATA/300)
  • NAND Flash Memory Type: SLC
  • Average Latency: 3Gb/s
  • Features: Hard Drive
  • Usage: Ideal for Servers
  • Model #: 50XV4
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SEAGATE ST1200MM0129 SEAGATE 1.2TB EXOS 10E2400 HDD 512E/4K SAS 2.5 10000 256MB
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Seagate
SEAGATE ST1200MM0129 SEAGATE 1.2TB EXOS 10E2400 HDD 512E/4K SAS 2.5 10000 256MB
  • NAND Flash Memory Type: SLC
  • Average Latency: 12Gb/s
  • Usage: For Enterprise Storage
  • Model #: ST1200MM0129
Seagate BarraCuda 7200.10 ST380215A 80GB 7200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda 7200.10 ST380215A 80GB 7200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 11ms
  • Average Write Time: 12ms
  • Average Latency: 4.16ms
  • Parts: 2 years limited
  • Model #: ST380215A
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  • $119.95 
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Seagate ST10000NM005G Exos X16 10tb sata-6gbps 7.2K 512e 3.5" hdd
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  • $365.00 
  • Free Shipping
Seagate Enterprise Performance 15K HDD 600GB 15K RPM SAS 12Gb/s 256MB Cache 2.5" Hard Drive (ST600MP0006)
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MDD MDD18TSATA25672E18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Enterprise Hard Drive
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Refurbished MDD MDD18TSATA25672E18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Enterprise Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Parts: 5 Years
  • Model #: MDD18TSATA25672E
  •  
  • $439.99 
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WL 160GB 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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  • $19.99 
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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)
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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
Seagate Exos X16 16TB Enterprise HDD 12Gb/s SAS 512e/4Kn 7200 RPM 256MB Cache 3.5" Internal Hard Drive ST16000NM002G - OEM
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SEAGATE ST12000NM005G Exos X16 12TB SATA 6Gb/s 3.5inch Hard drive
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  • $329.00 
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Seagate Desktop HDD ST3000DM001 3TB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate Desktop HDD ST3000DM001 3TB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Height (maximum): 26.11mm
  • Width (maximum): 101.60mm
  • Length (maximum): 146.99mm
  • Model #: ST3000DM001
st336706lc 36GB 10000 RPM 4MB Cache SCSI 3.5" Hard Drives
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Seagate
st336706lc 36GB 10000 RPM 4MB Cache SCSI 3.5" Hard Drives
  • NAND Flash Memory Type: SLC
  • Parts: 5 years limited
  • Labor: 5 years limited
  • Model #: ST336706LC
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TOSHIBA MD04ACA400 4TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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TOSHIBA MD04ACA400 4TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Average Latency: 4.17ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Model #: MD04ACA400
HGST HUS724030ALA640 - 3TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive
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HGST HUS724030ALA640 - 3TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive
  • Brand: HGST
  • Capacity: 3TB
  • RPM: 7200 RPM
  • Interface: SATA
  • Model #: HUS724030ALA640
HGST HDN726060ALE614 0F26900 6TB 7.2K RPM SATA 3.5" NAS Hard Drive
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HGST HDN726060ALE614 0F26900 6TB 7.2K RPM SATA 3.5" NAS Hard Drive
  • Average Latency: 6Gb/s
  • Model #: HDN726060ALE614
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  • $236.10 
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8TB Ent 3.5" SATA 6Gbs SED512E (ST8000NM0105)
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Seagate 500GB Barracuda Pro SATA 6Gb/s 128MB Cache 2.5-Inch Internal Hard Drive (ST500LM034)
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ST1000LM035 Seagate 1RK172-021 1TB 5.4K RPM 6Gbps 2.5"SATA Laptop HDD Hard Drive
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  •  
  • $69.25 
1D0F5 Dell 2.4TB SAS 2.5" 10K 12G G14-G16 Hard Drive ST2400MM0159
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DELL
1D0F5 Dell 2.4TB SAS 2.5" 10K 12G G14-G16 Hard Drive ST2400MM0159
  • Model #: 1D0F5-01D0F5-dell-ST2400MM0159-new-atp
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  • $425.00 
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Dell DRMYH - Dell 4TB 3.5" Nearline SAS 7.2K 6Gb/s Hard Drive
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DELL
Dell DRMYH - Dell 4TB 3.5" Nearline SAS 7.2K 6Gb/s Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Model #: DRMYH
Seagate Exos 12TB Enterprise HDD SATA 6Gb/s 512e/4Kn 7200 RPM 256MB Cache 3.5" Internal Hard Drive ST12000NM001G-OEM
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Seagate
Seagate Exos 12TB Enterprise HDD SATA 6Gb/s 512e/4Kn 7200 RPM 256MB Cache 3.5" Internal Hard Drive ST12000NM001G-OEM
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Parts: NO Manufacturer Warranty, Sell provide 5-year warranty
  • Model #: ST12000NM001G-OEM
Seagate BarraCuda 7200.10 ST3160815AS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda 7200.10 ST3160815AS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 11ms
  • Average Write Time: 12ms
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Model #: ST3160815AS
ST1800MM0159 JY57X Dell GEN14 1.8TB 10K RPM 12Gb/s 2.5" SAS SERVER Hard Drive
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WL 2TB 64MB Cache 5400RPM SATA III (6.0Gb/s) 3.5" Internal Surveillance DVR Hard Drive - w/ 1 Year Warranty
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WL 2TB 64MB Cache 5400RPM SATA III (6.0Gb/s) 3.5" Internal Surveillance DVR Hard Drive - w/ 1 Year Warranty
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WL2000GSA6454-PUR
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  • $79.99 
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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:

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