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HPE 689287-003 EG0600FCSPL 600 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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  • $154.00 
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LOT OF 10 - Dell T6TWN HUC101212CSS600 1.2TB 10000RPM 6Gbps 2.5" SAS Hard Drive
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  • $485.00 
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01NN116 01NN142 01NN144 IBM 1.8TB 10K 12Gb/s 2.5" SAS Hard Drive For V5000 GEN2
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  • $269.99 
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Transcend 128GB M.2 2280 PCIe Gen3X4 3D TLC Internal SSD
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IBM 49Y1880 - 1TB 3.5" Near Line SAS 7.2K 6Gb/s HS Hard Drive
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  • $135.19 
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Dell YJ2KH - Dell 300GB 2.5" SAS 10K 12Gb/s Hard Drive
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HP 649401-003 2Tb 7200Rpm 3.5Inch Midline Sata 3Gb By S Hard Disk Drive With Tray
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  • $149.19 
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HP 289042-001 72.8GB 10000 RPM SCSI Ultra320 3.5" Internal Hard Drive
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  • $29.80 
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WD WD6001FZWX Black™ 6 TB 3.5-inch Performance Hard Drive
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  • $210.10 
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HPE 597609-003 600 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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  • $131.19 
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HP 404709-001 72.8GB 10000 RPM SCSI Ultra320 HOT-PLUG Internal Hard Drive
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  • $51.95 
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HP 430165-003 146Gb 10000Rpm Sas 3Gbits 2.5Inch Dual Port Sff Hard Disk Drive With Tray
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  • $130.19 
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61H3H ST1800MM0008 DELL EQUALLOGIC 1.8TB 10KRPM 12Gb/s 4KN 2.5"SAS HDD HardDrive
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  • $255.00 
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HP 646894-001 1Tb 7200Rpm Sata 3.5Inch Hot Swap Hard Disk Drive
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  • $71.19 
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Dell XY986 2TB 2.5" SAS 7200rpm Internal Hard Drive
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Fujitsu Mhy2160bh 160Gb 5400Rpm 8Mb Buffer 2.5Inch Sata Notebook Hard Drive
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  • $48.20
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  • $48.19 
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Dell HT953 Seagate ST3300655SS 300GB 3.5" SAS Hard Drive
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Fujitsu MAX3147NC 147GB 15000 RPM 8MB Cache SCSI Ultra320 80pin 3.5" Hard Drive
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  • $235.19 
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Dell 745GC 0745GC 300GB 10K 6G 2.5in SAS HDD ST93000605SS W/ Tray
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Seagate ST3146356SS 146GB 15000 RPM SAS 3Gb/s 3.5" Internal Hard Drive
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  • $28.00 
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Dell 0JWVN - 2TB 3.5" SATA 7.2K 6Gb/s HS Hard Drive
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ST3300657SS-H Seagate CHEETAH 15K.7 146GB 15K RPM 6Gb/s 16MB 3.5" SAS Hard Drive
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  • $55.96 
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ST32000444SS-DEL SEAGATE CONSTELLATION ES 2TB 7200RPM 6GBPS LFF SAS SC HARD DRIVE
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  • $68.95 
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0B33078 Dell ENT HUC101812CSS204 1.2TB 10KRPM 12Gbps 2.5"SAS SERVERHDD HardDrive
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ST1000DL003 Seagate 1TB 5.4K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $48.95 
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Dell 1P7DP - 2TB 3.5" SAS 7.2K 6Gb/s HS Hard Drive
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HP MM0500EBKAE 500Gb 7200Rpm 2.5Inch Sff Midline Sataii Hotplug Hard Disk Drive With Tray
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  • $155.89 
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757375-001 HPE 480GB 6G NHP SFF SATA SSD HAR DRIVE (757375-001)
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  • $225.00 
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ST3300657SS Seagate 300GB SAS 3.5" LFF 6G 15K Hard Drive 45E7953
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  • $51.96 
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ST3300655SS Seagate 9Z1066-051 300GB 15000RPM 3Gbps 3.5" SAS HDD Hard Drive
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  • $43.96 
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P05319-001 P02760-001 HPE 240GB 6Gbps Read Intensive 2.5" SATA Solid State Drive
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  • $149.88 
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Seagate MOMENTUS ST9500325AS 500GB 5400RPM 3Gbps 2.5" SATA Laptop Hard Drive
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  • $34.96 
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ST8000NM0075 8TB 7.2K RPM 12G 3.5" SAS HDD For Dell T620 T630 T640 T710
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  • $348.95 
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HPE 8TB 6G SATA 7.2K LFF 512e LP MDL HDD
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K4M5W DELL 1TB 7.2K SATA 3.5 LFF 6Gbps HDD KIT FS
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HGST HUH721008ALE600 - 8TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive
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Dell 400-AJQC - Dell 300GB 2.5" SAS 10K 12Gb/s Hard Drive
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Dell 36RH9 - 1.2TB 2.5" SAS 10K 6Gb/s HS Hard Drive
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DELL 1KWKJ Dell 500Gb SATA 7.2k 3.5 Hard Drive
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9JX248-150 Dell 2TB 7.2K SAS 6G LFF Hard Drive
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DELL 1KWKJ Dell 500Gb SATA 7.2k 3.5 Hard Drive
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Dell 0T871K - Dell 300GB 2.5" SAS 10K 6Gb/s 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