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HP 765424-B21 600 GB 3.5" Internal Hard Drive
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HP StorageWorks P2000 AP861A 1TB 7200 RPM SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
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HP 454146-S21 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate NL35 ST3500641NS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Kingston SSDNow KC300 240 GB 2.5" Internal Solid State Drive
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IBM 00Y2473 3TB 7200 RPM SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
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HP QK703A 3TB 7200 RPM SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
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HP StorageWorks P2000 AW556A 2TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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ST3400820AS Seagate 9BJ134-622 400GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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ST340014AS Seagate BARRACUDA 7200.7 40GB 7.2K RPM 1.5Gbps 3.5" SATA Hard Drive
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IBM 43W7622 1TB 7200 RPM SATA 3.0Gb/s 3.5" Simple Swap Hard Disk Drive Bare Drive
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ST250LT002 Seagate 9VM14C MOMENTUS 250GB 5.4K RPM 3Gb/s 2.5" SATA HDD Hard Drive
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ST3160813AS Seagate 9FZ181-302 160GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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Seagate CONSTELLATION ST9500620NS 500GB 7.2K RPM 6Gb/s 2.5" SATA HDD Hard Drive
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ST3500414CS Seagate 9GW142 500GB 5.9K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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Seagate ST3600057SS 9FN066-031 600GB 15K RPM 6Gb/s 3.5" SAS HDD Hard Drive
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ST9900805SS Seagate 9TH066 900GB 10K RPM 6Gb/s 2.5"SAS HDD Hard Drive- (0 HOURS)
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Seagate ST33000650SS 9SM260-031 3TB 7.2K RPM 6Gb/s 3.5" SAS Hard Drive
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ST1200MM0129 Seagate Exos 1.2TB 2.5" SAS 10K 12G Hard Drive 1XH203-003
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ST9500423AS Seagate 9RT143 500GB 7.2K RPM 3Gb/s 2.5" SATA Laptop HDD Hard Drive
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ST250LT007 9ZV14C-031 Seagate 250GB 7.2K RPM 3Gb/s 2.5" SATA Laptop Hard Drive
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ST9250410ASG Seagate 9PSG42 250GB 7.2K RPM 3Gb/s 2.5" SATA Hard Drive
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0-HOURS 9TG066-046 Seagate ST9600205SS SAVVIO 10K.5 600GB 10K RPM 6Gbps 2.5" SAS Hard Drive
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ST9500323CS Seagate PIPELINE HD 500GB 5.4K RPM 3Gb/s 2.5" SATA LAPTOP Hard Drive
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ST1200MM0017 Seagate 1DA210 ENTERPRISE V7 1.2TB 10K RPM 6Gb/s 2.5"SAS Hard Drive
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ST9600204SS Seagate 9PN066 600GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive W/0 H0RS
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Seagate ST3300655SS 921066-002 300GB 15000RPM 3Gbps 3.5" SAS HDD Hard Drive
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ST1000NM0051 Seagate CONSTELLATION 1TB 7200RPM 6Gbps 3.5" SATA HDD Hard Drive
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ST9320325AS Seagate 9HH13E 320GB 7200RPM 3Gbps 2.5" SATA Laptop HDD Hard Drive
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ST9320320AS Seagate 488446 MOMENTUS 320GB 5400RPM 3Gbps 2.5" SATA HDD Hard Drive
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ST9500325AS Seagate 9HH134 500GB 5.4K RPM 3Gb/s 2.5" SATA Laptop HDD Hard Drive
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0-HOURS ST9300605SS 9TE066 Seagate 300GB 10K RPM 6Gbps 2.5" SAS HDD Hard Drive
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Lenovo Network - Switch Modules
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ST300MM0008 Seagate ENTERPRISE 300GB 10KRPM 12Gbps 2.5" SAS HDD Hard Drive  V8
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ST39236LC Seagate 9N3011 9.2GB 7200RPM 80Pin 1MB 3.5" SCSI HDD Hard Drive
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HDS721064CLA332 Hitachi 640GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive 590656-001
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ST336752LC Seagate CHEETAH X15 36.7GB 15K U160 SCSI 80-Pin 8MB 3.5" Hard Drive
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Dell 1.20 Tb Hard Drive - 2.5" Internal - Sas (12Gb/S Sas)
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00AR327 00AR400 00AR480 IBM 1.2TB 10K RPM 6Gb/s 2.5" SAS SERVER HDD Hard Drive
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ST31500341AS Seagate BARRACUDA 7200.11 1.5TB 7.2K RPM 3Gbps 3.5" SATA Hard Drive
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39R7350 26K5842 40K1044 IBM 146GB 15K RPM 3Gbps 3.5" SAS SERVER HDD Hard Drive
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Intel SSDPD2ME010T401 DC D3600 1Tb 2.5-Inch PCIe Solid State 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