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WD Black 5TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 128MB Cache 3.5 Inch - WD5001FZWX
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Used - Like New WD Black 5TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 128MB Cache 3.5 Inch - WD5001FZWX
  • Average Latency: 6Gb/s
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD5001FZWX
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  • $300.00 
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IBM 81Y9886 3 TB 3.5' Internal Hard Drive
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IBM 81Y9886 3 TB 3.5' Internal Hard Drive
  • Average Latency: 6Gb/s
  • Model #: 81Y9886
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  • $269.19 
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7YX58 ST600MM0006 Dell 600GB 10000RPM 6Gbps 2.5" SAS SERVER HDD Hard Drive
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  • $44.00 
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Dell 600GB 10K 2.5" SAS 6Gbps HDD Seagate ST9600205SS // R72NV with Tray
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Dell R95FV - Dell 600GB 2.5" SAS 10K 12Gb/s Hard Drive
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DELL
Dell R95FV - Dell 600GB 2.5" SAS 10K 12Gb/s Hard Drive
  • Usage: For Enterprise Storage
  • Model #: R95FV
seagate ironwolf pro st14000ne0008 14 tb hard drive - 3.5" internal - sata (sata/600)
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  • $525.00 
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0THGNN THGNN Dell ST4000NM0033 4TB 7200RPM 6Gbps 3.5" SATA SERVER HDD Hard Drive
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Dell CHEETAH 1DKVF ST3300657SS-H 146GB 15K RPM 6Gb/s 3.5" SAS SERVER Hard Drive
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  • $299.00 
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Dell 342-2100 - 2TB 3.5" Near Line SAS 7.2K 6Gb/s HS Hard Drive
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DELL
Dell 342-2100 - 2TB 3.5" Near Line SAS 7.2K 6Gb/s HS Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Features: Hard Drive
  • Usage: Ideal for Servers
  • Model #: 342-2100
Toshiba X300 20TB PRO Performance Internal Hard Drive   HDWR62AXZSTB
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Toshiba X300 20TB PRO Performance Internal Hard Drive HDWR62AXZSTB
  • Brand: TOSHIBA
  • Series: X300
  • Part Number: HDWR62AXZSTB
  • Model #: HDWR62AXZSTB
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DELL ENTERPRISE ACCESSORIES 400-AJPC 1.2TB SAS 12GBPS 10K 3.5IN
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DELL
DELL ENTERPRISE ACCESSORIES 400-AJPC 1.2TB SAS 12GBPS 10K 3.5IN
  • NAND Flash Memory Type: SLC
  • Usage: For Enterprise Storage
  • Model #: 400-AJPC
Dell 400-ASSV - 600GB 2.5" SAS 15K 12Gb/s Hot Swap Hard Drive
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P00JM ST6000NM0024 Dell 6TB 7.2K RPM 6Gb/s 3.5" SATA HDD Hard Drive
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Genuine DELL 9W5WV 09W5WV 9RZ268-150 1TB 7.2K 2.5" 6G SAS ST91000640SS
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DELL
Genuine DELL 9W5WV 09W5WV 9RZ268-150 1TB 7.2K 2.5" 6G SAS ST91000640SS
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: ST91000640SS-N
Dell 342-2336 - 3TB 3.5" SAS 7.2K 6Gb/s HS Hard Drive
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DELL
Dell 342-2336 - 3TB 3.5" SAS 7.2K 6Gb/s HS Hard Drive
  • Usage: Ideal for Servers
  • Model #: 342-2336
Seagate 16TB HDD Exos X16 7200 RPM 512e/4Kn SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive
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Seagate 16TB HDD Exos X16 7200 RPM 512e/4Kn SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: SLC
  • Parts: No Manufacturer Warranty, Seller provide 5 years Warranty!
  • Model #: BEST16000NM001G
Dell 89D42 - Dell 1.2TB 2.5" SAS 10K 12Gb/s Hard Drive
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DELL
Dell 89D42 - Dell 1.2TB 2.5" SAS 10K 12Gb/s Hard Drive
  • NAND Flash Memory Type: SLC
  • Average Latency: 12Gb/s
  • Usage: For Enterprise Storage
  • Model #: 89D42
Dell 341-8718 146 GB Hard Drive - 3.5" Internal - SAS (3Gb/s SAS)
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  • $130.00 
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Dell 342-5571 - Dell 1.2TB 2.5" SAS 10K 6Gb/s Hard Drive
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DELL
Dell 342-5571 - Dell 1.2TB 2.5" SAS 10K 6Gb/s Hard Drive
  • Average Latency: 12Gb/s
  • Model #: 342-5571
Dell PCH77 - 2TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive
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DELL
Dell PCH77 - 2TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive
  • Usage: Ideal for Servers
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: PCH77
Dell 342-5572 - 4TB 3.5" SAS 7.2K 6Gb/s HS Hard Drive
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DELL
Dell 342-5572 - 4TB 3.5" SAS 7.2K 6Gb/s HS Hard Drive
  • Average Latency: 12Gb/s
  • Usage: Ideal for Servers
  • Model #: 342-5572
Maxtor DiamondMax 10 6B300R0 300GB 7200 RPM 16MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
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Maxtor DiamondMax 10 6B300R0 300GB 7200 RPM 16MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
  • Average Seek Time: 9ms
  • Average Latency: 4.17ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: 6B300R0
DELL 0V8G9 1Tb 7200Rpm 32Mb Buffer Near Line Sas 6Gbits 3.5Inch Hard Drive With Tray For Powervault Server
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  • $65.00 
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Seagate Exos ST20000NM002C 20TB 7200RPM SATA 6Gb/s 256MB Cache CMR 3.5-Inch Enterprise Hard Drive
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Refurbished Seagate Exos ST20000NM002C 20TB 7200RPM SATA 6Gb/s 256MB Cache CMR 3.5-Inch Enterprise Hard Drive
  • Usage: Enterprise
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST20000NM002C
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  • $539.99 
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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