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Dell 400-ANFK - Dell 4TB 3.5" Nearline SAS 7.2K 12Gb/s Hard Drive
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  • $325.00 
F5HFM-FS DELL 1.2TB 10K SAS 2.5" 12Gb HDD KIT FOR R640 R740 R740XD R940 C6420
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  • $195.00 
Dell 400-ALRY - Dell 4TB 3.5" Nearline SAS 7.2K 12Gb/s Hard Drive
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  • $325.00 
Dell 4TB 7.2K SAS 12Gb/s 3.5" Hard Drive PowerEdge T330 T430 T630 R530 R630 R730
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  • $325.00 
IBM SEAGATE ST32000444SS CONSTELLATION ES 2TB 3.5" 7.2K RPM 16MB SAS HARD DRIVE
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  • $72.95 
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Dell 400-ATKM / FW4KG 4TB 3.5" LFF 12Gbps 7.2K RPM 512n SAS Hard Drive Kit X7K8W
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  • $325.00 
401-ABDC DELL 1.2TB 10K SAS 3.5" 12Gb HDD KIT FOR R640 R740 R740XD R940 C6420
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  • $195.00 
NetApp IBM HGST X425A-R6 108-00321 18R1085 1.2TB 10K SAS 2.5" HDD 0B28479
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  • $45.00 
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HP 483095-001 160GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
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  • $45.00 
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AL13SEB600 5TFDD Dell 600GB 10000RPM 6Gbps 2.5" SAS SERVER HDD Hard Drive
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HPE 791034-B21 1.80 TB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
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  • $84.00 
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8WR71 ST9300653SS Dell EQL 300GB 15000RPM 6Gbps 2.5" SAS SERVER HDD Hard Drive
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9PR63 09PR63 Dell ST4000NM0033 ES.3 4TB 7.2K RPM 6Gb/s 3.5" SATA HDD Hard Drive
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  • $225.00 
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HPE 10TB 3.5" SAS 7200rpm Internal Hard Drive 857644B21
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HPE 286778-b22 73 GB Hard Drive - 3.5" Internal - SCSI (Ultra320 SCSI)
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  • $75.00 
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HTS545032A7E680 HITACHI 320GB 5400RPM 2.5-INCH SATA HARD DRIVE
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  • $48.95 
Dell 36RH9 036RH9 1.2TB HDD 10K SAS 2.5" Seagate ST1200MM0088 w Caddy G11 G12
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  • $52.95 
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HP 507284-001 - 300GB 6G DP 10K 2.5" SAS Hard Drive with Tray
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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