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Dell 7FJW4 - Dell 300GB 2.5" SAS 15K 12Gb/s Hard Drive
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DELL
Dell 7FJW4 - Dell 300GB 2.5" SAS 15K 12Gb/s Hard Drive
  • Average Latency: 6Gb/s
  • Usage: For Enterprise Storage
  • Model #: 7FJW4
Dell 400-AUUY - Dell 1.2TB 2.5" SAS 10K 12Gb/s Hard Drive
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DELL
Dell 400-AUUY - Dell 1.2TB 2.5" SAS 10K 12Gb/s Hard Drive
  • Average Latency: 12Gb/s
  • Model #: 400-AUUY
Dell 05J9P - Dell 900GB 2.5" SAS 10K 6Gb/s Hard Drive
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DELL
Dell 05J9P - Dell 900GB 2.5" SAS 10K 6Gb/s Hard Drive
  • Average Latency: 12Gb/s
  • Model #: 05J9P
0B34157 Dell 1.2TB 10K SAS 12G SFF Hard Drive
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Seagate ST3320413CS 320GB 5900 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive
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Refurbished Seagate ST3320413CS 320GB 5900 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive
  • Average Seek Time: 14ms
  • Average Write Time: 15ms
  • Average Latency: 5.1ms
  • Height (maximum): 20.20 mm
  • Model #: ST3320413CS
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  • $59.00 
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HDEPR84DAB51 Dell 1TB 7.2K SATA 6G LFF Hard Drive
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Dell R72NV - 600GB 2.5" SAS 10K 6Gb/s HS Hard Drive
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DELL
Dell R72NV - 600GB 2.5" SAS 10K 6Gb/s HS Hard Drive
  • NAND Flash Memory Type: SLC
  • Usage: Ideal for Servers
  • Model #: R72NV
Dell 1P7DP - 2TB NL SAS 7.2K 6GBPS 3.5" Hard Drive
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Dell 4XK8X - Dell 600GB 2.5" SAS 15K 6Gb/s Hard Drive
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DELL
Dell 4XK8X - Dell 600GB 2.5" SAS 15K 6Gb/s Hard Drive
  • Average Latency: 6Gb/s
  • Model #: 4XK8X
Dell 342-0120 - 600GB 3.5" SAS 15K 6Gb/s HS Hard Drive
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DELL
Dell 342-0120 - 600GB 3.5" SAS 15K 6Gb/s HS Hard Drive
  • Usage: Ideal for Servers
  • Model #: 342-0120
Dell 835R9 - 2TB 3.5" SATA 7.2K 6Gb/s HS Hard Drive
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DELL
Dell 835R9 - 2TB 3.5" SATA 7.2K 6Gb/s HS Hard Drive
  • NAND Flash Memory Type: SLC
  • Average Latency: 6Gb/s
  • Features: Hard Drive
  • Usage: Ideal for Servers
  • Model #: 835R9
1ER164-501 - Seagate 2TB 7200RPM SATA 6Gb/s 64MB Cache (RoHS) 3.5-inch Hard Drive
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  • $48.10 
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W69TH -  DELL 1TB 7.2K SATA 3.5 LFF 6Gbps HDD KIT FS
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9FL066-150 Dell 300GB 15K SAS 6G LFF Hard Drive
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1TZ279-150 Dell 4TB 7.2K SAS 12G LFF Hard Drive
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9WG066-150 Dell 600GB 10K SAS 6G SFF Hard Drive
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HDEBF01DAA51 Dell 1.2TB 10K SAS 12G SFF Hard Drive
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Dell 1KWKJ 500 GB 3.5 " 7.2 K Sata Hard Drive with Tray
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1VE100-136 Dell 1TB 7.2K SATA 6G SFF Server Hard Drive
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Dell 300 GB 2.5" Internal Hard Drive
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DELL
Dell 300 GB 2.5" Internal Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Model #: 6WC9D
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Dell 300GB 10K 2.5'' SAS 12Gbs HDD RDKH0
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1F0DG - DELL 1TB 7.2K SATA 3.5 LFF 6Gbps HDD KIT FS
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Dell 5R6CX - 600GB 2.5" SAS 10K 6Gb/s HS Hard Drive
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Dell F617N 15K.7 300GB 15K 3.5" ST3300657SS SAS Hard Drive
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9WE066-150 Dell 300GB 10K SAS 6G SFF Hard Drive
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Dell 342-2066 450GB 15000 RPM Internal Hard Drive
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DELL
Dell 342-2066 450GB 15000 RPM Internal Hard Drive
  • Average Latency: 12Gb/s
  • Model #: 342-2066
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  • $92.19 
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HDEAE00DAA51 Dell 600GB 15K SAS 6G SFF Hard Drive
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Dell 400-ATKJ - Dell 2TB 3.5" SATA 7.2K 6Gb/s Hard Drive
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DELL
Dell 400-ATKJ - Dell 2TB 3.5" SATA 7.2K 6Gb/s Hard Drive
  • Average Latency: 6Gb/s
  • Model #: 400-ATKJ
9RZ168-636 Dell 1TB 7.2K SATA 6G SFF Server Hard Drive
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Dell F617N 15K.7 300GB 15K 3.5" ST3300657SS SAS Hard Drive
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600GB Dell 15K 12GB/s SAS 2.5" Hot Swap HDD DYDW0
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DELL
600GB Dell 15K 12GB/s SAS 2.5" Hot Swap HDD DYDW0
  • Average Latency: 6Gb/s
  • Model #: DYDW0

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