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Dell W348K 600GB 15K RPM 3.5" Hard Drive HUS156060VLS60 0W348K
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  • $92.95 
DELL ST1000NM0033-DELL ST1000NM0033-DELL 1TB 6G LFF SATA HARD DRIVE
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  • $52.00 
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DELL F617N ST3300657SS 300GB 6G 15K 3.5" SAS Hard Drive w/F9541
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  • $59.95 
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Dell 55RMX 055RMX ST9500620SS 500GB 6G 7.2K 2.5" SAS Hard Drive
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  • $44.50 
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Dell Compatible 900GB 6G 10K 2.5" SAS HGH3J XRRVX MRDXF 0FR83F HDD Hard Drive
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  • $75.00 
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Dell EqualLogic 9TH066-157 900GB 10k 2.5" SAS Hard Drive ST9900805SS FR83F
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  • $50.00 
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XK111 DELL 0XK111 146GB SAS 15K 3GBPS 3.5" HARD DRIVE W/TRAY MBA3147RC
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  • $45.00 
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Dell 1TB 6G 7.2K 2.5" SAS 9W5WV 09W5WV ST91000640SS HDD Hard Drive W/ Tray
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  • $65.00 
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Dell 1TB 6G 7.2K 2.5" SAS 09W5WV 9W5WV ST91000640SS Hard Drive
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  • $59.00 
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Dell Compatible T871K 0T871K 300GB 6G 10K 2.5" SAS THIRD PARTY HDD Hard Drive
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  • $45.00 
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Dell 300GB 6G 15K 2.5" SP SAS H8DVC HDD Hard Drive 0H8DVC  W/TRAY
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  • $54.00 
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ST900MM0006-DELL E SAVVIO 900GB 10000RPM 6GBPS SAS HARD DRIVE
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  • $53.95 
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Dell 400-AGPM - 600GB 2.5" SAS 15K 6Gb/s Non Hot-Swap Hard Drive
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  • $99.00 
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Dell H8DVC 300GB SAS 15K 2.5" 6Gbps Hard Drive with C6220 Tray
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  • $60.00 
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Dell 529FG 0529FG 4TB 6G 7.2K 3.5" SAS Hard Drive W/ R-series Tray
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  • $125.00 
ST600MM0006-DELL 600GB 10000RPM 6GBPS SED SFF SAS HARD DRIVE
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  • $37.50 
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Dell 400-AMGE - Dell 1.8TB 2.5" SAS 10K 12Gb/s Hard Drive
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  • $245.09 
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Dell EQL 600GB 10K 2.5 SAS Y4MWH 0Y4MWH SFF Small Form Factor Hard Drive w/ Tray
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  • $85.00 
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Dell  15K.7 ST3600057SS 600GB 15000 RPM 3.5" SAS Hard Drive DOD
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  • $104.00 
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Dell Compatible P252M 0P252M 300GB 6G 10K 2.5" SAS THIRD PARTY HDD Hard Drive
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  • $40.00 
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DELL 1P7DP Dell 2TB 7.2K NL SAS Hard Drive 3.5in (Certified Ref.)
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  • $89.90 
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Dell 400-AGSW - 600GB 2.5" SAS 15K 12Gb/s Hot Swap Hard Drive
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  • $115.00 
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Dell 3TB 7.2K 3.5 SATA 6Gbps Enterprise Class Hard Drive RWV72 with Caddies
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  • $139.00 
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Dell 400-AJXO - 1.8TB 2.5" SAS 10K 12Gb/s Non Hot-Swap Hard Drive
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  • $118.00 
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Dell 0WHR0G - Dell 1.8TB 2.5" SAS 10K 12Gb/s Hard Drive
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  • $300.19 
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IBM 00V7528 - IBM 900GB 2.5" SAS 10K 6Gb/s Hard Drive
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  • $78.19 
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Dell 400-AFPE - 6TB 3.5'' SAS 7.2K 6Gb's Non Hot-Swap Hard Drive
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  • $125.00 
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529Fg Dell 4Tb 7200Rpm 3.5Inch Sas Hard Drive (Certified Ref.)
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  • $125.00 
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HTS543225A7A384, PN 0J18922, MLC DA4024, Hitachi 250GB SATA 2.5 Hard Drive
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  • $20.00 
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Dell 401-AASN - 1.8TB 2.5'' SAS 10K 12Gb's Non Hot-Swap Hard Drive
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  • $117.00 
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HTS725050A7E630, PN 0J26105, MLC DA4873, Hitachi 500GB SATA 2.5 Hard Drive
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  • $60.00 
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Dell 401-AASR - 1.8TB 2.5'' SAS 10K 12Gb's Non Hot-Swap Hard Drive
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  • $107.00 
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Dell 400-AESP - 300GB 2.5" SAS 15K 6Gb/s Non Hot-Swap Hard Drive
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  • $168.00 
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HP 500GB 2.5" Hard Drive 655708-B21 656107-001 614829-002 6G 7.2K SATA
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  • $59.95 
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636929-001 HP 500GB 6G NCQ 7.2K SATA LFF 3.5" Hard Drive 633980-001 639709-001
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  • $38.00 
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HTS723232A7A364, PN 0J13233, MLC DA3806, Hitachi 320GB SATA 2.5 Hard Drive
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  • $54.50 
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HP 655710-B21 656108-001 1TB 7.2K RPM 2.5" G8 SATA THIRD PARTY Hard Drive
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  • $58.00 
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HTS543225A7A384, PN 0J20222, MLC DA5778, Hitachi 250GB SATA 2.5 Hard Drive
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  • $20.00 
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HTS725032A7E630, PN 0J26163, MLC DA6220, Hitachi 320GB SATA 2.5 Hard Drive
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  • $65.00 
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HTS723232A7A364, PN 0J13233, MLC DA5031, Hitachi 320GB SATA 2.5 Hard Drive
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  • $59.00 
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HP 500GB 6G 7.2K 2.5" SATA 656107-001 655708-B21 Third Party Hard Drive
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  • $55.00 
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HTS725032A9A365, PN 0A73363, MLC DA3513, Hitachi 320GB SATA 2.5 Hard Drive
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  • $87.00 
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HTS725050A7E630, PN 0J26145, MLC DA5026, Hitachi 500GB SATA 2.5 Hard Drive
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  • $55.00 
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HTS725032A7E630, PN 0J26163, MLC DA5061, Hitachi 320GB SATA 2.5 Hard Drive
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  • $65.00 
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Dell 400-AATJ - 3TB 3.5" SAS 7.2K 6Gb/s Non Hot-Swap Hard Drive
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  • $199.00 
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HTS723216L9SA60, PN 0A58903, MLC DA2891, Hitachi 160GB SATA 2.5 Hard Drive
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  • $79.00 
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Hitachi HTS725032A9A365 PN:0A73363 MLC:DA3513 320gb 2.5" Sata Hard Drive
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  • $87.00 
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HTS725050A7E630, PN 0J38745, MLC DA6728, Hitachi 500GB SATA 2.5 Hard Drive
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  • $68.00 
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Dell 400-AKLS - 1.8TB 2.5" SAS 10K 12Gb/s Hot Swap Hard Drive
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  • $204.00 
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Dell 342-5816 - 400GB 2.5" SATA  6Gb/s SSD
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  • $344.00 
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HP 655708-B21 500GB 7.2K 6G MDL SFF SATA SC HDD 656107-001 New
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  • $80.00 
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IBM 600GB 6G 15K 3.5" SAS 49Y1866 49Y1869 49Y1870 HARD DRIVE
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  • $185.00 
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Dell 400-AIER - Dell 1.8TB 2.5" SAS 10K 12Gb/s Hard Drive
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  • $379.19 
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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