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HPE 1TB 6G SATA 7.2K LFF MDL LP HDD
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Western Digital WD30EFRX 3TB SATA 6Gbps 5400RPM 64MB 3.5" Internal Hard Drive
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ST8000NM0075 Seagate 8TB 7.2K RPM SAS 12Gbps 3.5" 256MB Internal Hard Drive
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  • $245.00 
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0-HOURS HUH721010ALE600 HGST 0F27464 10TB 7.2K RPM 6Gb/s 3.5"SATA HDD Hard Drive
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Dell G14 1XZ231-150 1.8TB 10K RPM SAS 12Gb/s 512e 2.5" Hard Drive
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TOSHIBA HDEBC01JGA51 AL13SEB600 600GB 10K 2.5 6G SAS Hard Drive
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HPE 872479-B21 1.20 TB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
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  • $75.00 
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MZ-76P1T0 Samsung 860 PRO Series 1TB SATA 2.5" Solid State Drive MZ7KH1T0HAJR
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  • $180.00 
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Dell EMC HUS728T8TAL5200 8TB 12Gbps 7.2K SAS 3.5" Internal HDD 118000785
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  • $220.00 
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Western Digital WUH721414AL5204 14TB SAS 12Gbps 7200RPM 512MB 3.5" Internal HDD
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  • $385.00 
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HGST Ultrastar He8
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HGST Ultrastar He8
  • Model #: STEA2000400
652589-B21 HP 900GB 10K 6G SAS 2.5-Inch SFF HDD w/ Smart Carrier 653971-001
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W/estern Digital 80GB UDMA/100 7200RPM 2MB IDE Hard Drive - WD800BB
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W/estern Digital 80GB UDMA/100 7200RPM 2MB IDE Hard Drive - WD800BB

Limited time offer, ends 05/14

  • Model #: Aomoproing-RD6
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HDD HGST HUH728080AL4200 8TB SAS 7200 12GB 3.5 P/N: 0F23651
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Toshiba 10TB X300 Pro Performance 3.5" CMR Internal HDD
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BUFFALO 22-165-885 4TB SATA 3.0Gb/s Replacement Hard Drives for DriveStation­ Duo Gen2
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WD PURPLE 4TB SATA
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BUFFALO 4TB Replcement  HD TeraStation Model OP-HD4.0BST-3Y
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Seagate SkyHawk ST10000VX0008 10TB 3.5" SATA 7200rpm Internal Hard Drive
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Western WD81PURZ Digital Purple 8 TB Hard Drive - 3.5" Internal - SATA
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LOT OF 10 - FNW88 ST1000NM0023 Dell 1TB 7.2K RPM 6Gbps 3.5" SAS HDD Hard Drive
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WESTERN DIGITAL - IMSOURCING WD5000BPKX 500GB 7.2K 16MB SATA 6G 2.5IN
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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