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F9NWJ DELL 2.4TB 10K 12Gbps 2.5" 512e SAS Hard Drive 0F9NWJ AL15SEB24EQY
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  • $425.00 
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0F9W8 MG04SCA40EN Dell ENTERPRISE 4TB 7.2KRPM 12Gb/s 3.5"SAS SERVERHDD HardDrive
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00WG691 00WG690 00WG694 LENOVO 600GB 10K RPM 12Gb/s 2.5" SAS HDD Hard Drive
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26K5777 26K5779 IBM 73.4GB 10K RPM 3Gb/s SFF NH 2.5" SAS SERVER HDD Hard Drive
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01AC598 01EJ027 01EJ029 IBM 1.8TB 10000RPM 12Gbps 2.5" SAS SERVER HDD Hard Drive
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Dell 146 GB 3.5" Internal Hard Drive
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3C46W - DELL 1TB 7.2K SATA 3.5 LFF 6Gbps HDD KIT FS
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H8799 DELL 73GB 15K SAS 3.5 HDD 3GBPS
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DELL
H8799 DELL 73GB 15K SAS 3.5 HDD 3GBPS
  • Model #: dc1-790400000253208
Axiom 4XB0F28713-AX 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Enterprise Internal Hard Drive
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  • $948.01 
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Dell THGNN 4TB 7.2k 3.5" SATA-6Gb/s HDD
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Dell THGNN 4TB 7.2k 3.5" SATA-6Gb/s HDD
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EG001200JWJNQ HPE 1.2TB 12G 10K SFF SAS SC Hard Drive
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BUFFALO 4TB Replcement  HD TeraStation Model OP-HD4.0BST-3Y
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Dell 1P7DP 2TB NL SAS 7200RPM 6GBPS w/tray
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DELL
Dell 1P7DP 2TB NL SAS 7200RPM 6GBPS w/tray
  • Model #: 838-252806000253880
431944-B21 HP 300GB 3G S-P SAS 15K RPM 3.5" LFF Hot Plug Hard Drive 432146-001
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  • $34.01 
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00YK034 7XB7A00045 Lenovo 8TB 7.2K SAS 12Gb 3.5" Hard Drive
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Dell 250GB 7.2K 6Gbps SATA 2.5 HDD 512n (DNTWD)
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  • $39.00 
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HP Z Turbo Drive Dual Pro PCIe-4x4 NVMe Carrier
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Dell 240GB M.2 MLC SATA RI 6Gbs SSD (DMC15)
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  • $99.00 
BUFFALO 3TB Replcement  HD TeraStation Model OP-HD3.0BST-3Y
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Hp 1 Tb 3.5" Internal Hard Drive - Sata - 7200 Rpm (801882-b21) (801882b21)
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  • $238.67 
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IBM 00WG704 - IBM 1.2TB 2.5" SAS 10K 12Gb/s Hard Drive
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  • $230.00 
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HP 872737-001 - HP 1.2TB 2.5" SAS 10K 12Gb/s Hard Drive
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  • $413.71 
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504015-002 HPE 146GB 10K 3G DP SFF SAS Hard Drive
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HP 504336-001 160GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
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  • $33.99 
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Dell 8JYXK 1TB SATA 7.2K 6GBPS 3.5" Drive WD10EZEX-75WN4A0
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  • $45.56 
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Dell Toshiba 2TB DT01ACA200 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" 6HFW3
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  • $99.00 
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HP 454228-002-R 300GB 15000 RPM SAS 3Gb/s 3.5" Internal Hard Drive
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  • $69.00 
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HP Toshiba 3TB DT01ACA300 7.2K RPM 64MB Cache SATA 3.5" 661703-001 684599-001
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  • $179.00 
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SanDisk 12TB Professional G-Drive SDPH91G-012T-D-0H USB 3.2 G1 USB-C 7.2K RPM
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  • $339.00 
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Lenovo 0C19530 1TB 7200 RPM SAS 6Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $105.00 
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IBM 49Y1903 1 TB 3.5" Internal Hard Drive
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  • $79.00 
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Lenovo 00FC425 500 GB Thin 2.5-inch SATA 7 mm Internal Hard Drive - 7.2K RPM
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  • $29.00 
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IBM  49Y1876  1TB  7200 RPM  SAS 6Gb/s  NL 3.5"  Internal Hard Drive
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  • $179.00 
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IBM 43W7536 146GB 10000 RPM SAS 2.5" Internal Hard Drive
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  • $25.00 
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2.5" 1.2TB 10K SAS 12Gb HDD
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Lenovo
2.5" 1.2TB 10K SAS 12Gb HDD
  • Model #: 7XB7A00027
Cisco UCS-HD300G10K12G= 300GB 10000 RPM SAS 12Gb/s 2.5" Internal Hard Drive
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  • $1,309.99 
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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