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2TB SATA 2.5" 7.2K 6G Hybrid Drive Compatible 400-AMUO 400-ASNB
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Seagate 1TB SATA 3.5 BarraCuda SingPk (ST1000DM010)
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LOT OF 10 - Western Digital WD15EVDS 1.5TB 7200RPM 3Gbps 3.5" SATA Hard Drive
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  • $690.10 
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Dell 400-AUVR 2.40 TB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
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  • $218.00 
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HP 450 GB 3.5" Internal Hard Drive
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  • $444.00 
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HPE 832417-B21 480 GB Solid State Drive - 3.5" Internal - SATA (SATA/600)
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  • $600.00 
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LOT OF 10 - DELL 7YX58 ST600MM0006 600GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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  • $399.00 
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1.2TB SAS 2.5" 10K 12G Drive Compatible 400-ANVM 400-AVVK 400-AXDJ 401-AASM 400-AJUQ
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  • $215.00 - $245.00
6TB SAS 3.5" 7.2K 12G Hard Drive Compatible 400-AHYZ 400-ALCN 400-AIUD 400-ALDU 400-ALCK
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  • $399.00 
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HP 1 TB 2.5-Inch Internal Hard Drive 32 MB Cache Internal Bare or OEM Drives 655710-B21
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  • $82.90 
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ST3600057SS 600GB 15K RPM 6Gb/s 3.5" SAS HDD for Dell T620 T630 T640 T710
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  • $118.95 
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HITACHI DESKSTAR 500GB 7200RPM 3.5 INCH HARD DRIVE HDP725050GLA380
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  • $128.00 
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HUS151414VLF400 0B20917 HITACHI 147GB 15K LFF 3.5" FC HDD HARD DRIVE
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  • $63.10 
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ST3600057SS 600GB 15K RPM 6Gb/s 3.5" SAS HDD for Dell T420 T430 T440 T605 T610
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  • $119.95 
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P37673-K21  SEALED HPE 18TB SATA 6G 7.2K LFF SC He 512e ISE MV HDD
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  • $612.00 
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https://www.servers4less.com/storage/hard-drives/dell-0k9c6j
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  • $85.00 
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PDFHF ST8000NM0135 Dell SED 8TB 7.2K 12G 3.5in SAS Hard Drive PE 13G Server
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  • $399.00 
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Toshiba 4TB 3.5" SATA 6Gb/s 7200 RPM 128M Enterprise Hard Drive - MG04ACA400N
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  • $150.00 - $175.00
49Y6093 49Y6092 49Y6096 IBM 300GB 15K RPM 6Gb/s 3.5" SAS SERVER HDD Hard Drive
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Dell 400-AIFT 400 GB Solid State Drive - Internal - SATA (SATA/600)
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  • $586.19 
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42D0677 42D0678 42D0681 IBM 146GB 15K RPM 6Gb/s SFF 2.5" SAS HDD Hard Drive
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516828-B21HP 600GB SAS 3.5" LFF 6Gb/s 15K RPM G1-G7 Hard Drive 517354-001
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HP
516828-B21HP 600GB SAS 3.5" LFF 6Gb/s 15K RPM G1-G7 Hard Drive 517354-001
  • Model #: 516828-B21-517354-001-EF0600FATFF-hp-atp
00AJ146 00AJ147 00AJ150 IBM 1.2TB 10K RPM 6Gb/s 2.5" SAS SERVER HDD Hard Drive
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Hitachi HTS723232A7A364 320GB 7.2K 3Gb/s 8MB 2.5" SATA Laptop Hard Drive 0J17673
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  • $40.00 
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00RX908 00RY111 00WY600 IBM AHF4 1.8TB 10K RPM 12Gb/s 2.5" SAS HDD Hard Drive
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614826-001 628180-001 628059-B21 HP 3TB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $164.88 
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459319-001 458928-B21 HP 500GB 7200RPM 3Gbps 3.5" SATA SERVER HDD Hard Drive
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HPE Server Options 818365-B21 2 TB 3.5 in. Internal Hard Drive - SAS - 7200 RPM - Hot Pluggable - 1 Pack
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  • $235.00 
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LOT OF 10-Dell W330K HUC151414CSS600 146GB 15K RPM 6Gb/s 2.5" SAS HDD Hard Drive
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  • $450.00 
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581311-001 581286-B21 HP 600GB 10K RPM 6Gb/s 2.5" SAS SERVER HDD HARD DRIVE
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  • $62.88 
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XK112 HUC101414CSS300 Dell 146GB 10K RPM 3Gb/s 2.5"SFF SAS HDD HardDrive W/Caddy
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791034-B21 791055-001 HPE 1.8TB 10K RPM 12Gb/s 2.5" SAS HDD Hard Drive
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  • $95.00 
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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