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WD10EURX Western Digital 1TB 5400RPM 6Gbps 3.5" SATA HDD Hard Drive
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J770N ST9500530NS Dell 500GB 7200RPM 3Gbps 2.5"SATA SERVERHDD Hard Drive W/RTray
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HP EG1200FDJYT Msa 1.2Tb 10000Rpm Sas 6Gbits Sff 2.5Inch Dual Port Enterprise Hard Drive With Tray
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J164R WD2002FYPS Dell ENTERPRISE 2TB 5400RPM 3Gbps 3.5"SATA SERVER HDD HardDrive
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VYRKH DELL 2TB 7.2K SAS 3.5 HDD 6Gbps
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DELL
VYRKH DELL 2TB 7.2K SAS 3.5 HDD 6Gbps
  • Model #: 132-469161000262159
36RH9 ST1200MM0088 Dell ENTERPRISE 1.2TB 10000RPM 6Gbps 2.5" SAS HDD Hard Drive
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  • $55.00 
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DELL ENTERPRISE ACCESSORIES 400-ATJL 2GBPS 2.5IN 512N 10K RPM SAS
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0VX8J ST3600057SS Dell EQL 600GB 15KRPM 6Gbps 3.5"SAS HDD Hard Drive - (0 HOURS)
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LOT OF 10 - Dell 1KWKJ WD5003ABYX 500GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $625.00 
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THGNN DELL 4TB 7.2K SATA 3.5 LFF 6Gbps HDD KIT FS
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342-5274 4TB 7200RPM SATA 3.5Inch Dell Hard Drive
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  • $100.00 
W1C90 Dell 6TB SATA 3.5" 7.2K 6Gb Server Hard Drive ST6000NM0024 0W1C90
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  • $299.00 
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BUFFALO 2TB Replcement  HD TeraStation Model OP-HD2.0BST-3Y
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  • $126.99 
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ST2000NX0253 Seagate 2TB 7.2K RPM SATA 6Gbps 2.5" SFF 128MB Cache Hard Drive
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  • $80.00 
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ST2000NM0033 Seagate 2TB 7.2K RPM 6Gb/s 3.5" SATA HDD Hard Drive (ST2000NM0033)
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  • $79.95 
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Western Digital BLUE WD5000AAKX 500GB 7200RPM 6Gb/s 3.5" SATA Hard Drive
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  • $52.00 
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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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HP 2.40 TB 2.5" Internal Hard Drive - SAS
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ST1200MM0088 Seagate 1FF200-175 1.2TB 10K RPM 12Gb/s 2.5" SAS Hard Drive
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5R6CX 05R6CX Dell MBF2600RC 600GB 10000RPM 6Gbps 2.5" SAS SERVER HDD Hard Drive
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Dell CXKCK - 500GB 7.2K SATA 2.5Inch Hard Drive
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  • $24.13 
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IBM 00Y2432 00Y2507 00AR010 1.2TB 10000RPM 6Gbps 2.5" SAS SERVER HDD Hard Drive
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Dell RMCP3 0RMCP3 ST1200MM0007 1.2TB 10K 6G  2.5" SAS Hard Drive
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  • $54.95 
Dell 8TB 7.2K 12Gbps NL SAS 3.5 HDD (43V7V)
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  • $275.00 
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WD10EADS Western Digital 1TB 5.4K RPM 3Gb/s 3.5" SATA HDD Hard Drive (WD10EADS)
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Dell 1.2TB 2.5" SAS 10,000 RPM 12Gb/s Hard Drive
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0-HOURS WD5000LPLX Western Digital 500GB 7.2K RPM 6Gb/s 2.5" SATA HDD Hard Drive
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Dell R95FV 600GB 10000RPM 12Gb/s 2.5" SAS Hard Drive ST600MM0088
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C3YJM ST500NM0011 Dell CONSTELLATION 500GB 7200RPM 6Gb/s 3.5" SATA Hard Drive
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ST2000NM0023 Seagate 2TB 7200RPM 6Gbps 3.5" SAS HDD Hard Drive (ST2000NM0023)
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Dell ST3300657SS-H
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DELL
Dell ST3300657SS-H
  • Model #: 6IH8W-00-B0068-10
HGST HUS722T1TALA600 - HGST 1TB 3.5" SATA 6Gb/s Hard Drive
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Hitachi HUA721010KLA330 1TB 32MB 7200RPM Enterprise Grade 3.5" SATA2 Hard Drive
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st340016a 40GB 7200 RPM 2MB Cache IDE 3.5" Hard Drives
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ST3000NM0023 Seagate 9ZM278 3TB 7.2K RPM 6Gb/s 3.5" SAS SERVER HDD Hard Drive
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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