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Maxtor MaXLine III 7L250R0 250GB 7200 RPM 16MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
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Maxtor MaXLine III 7L250R0 250GB 7200 RPM 16MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
  • Average Seek Time: 9ms
  • Average Latency: 4.17ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: 7L250R0
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  • $78.19 
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Dell 400-AUXU - 2.4TB 2.5" SAS 10K 12Gb/s Hot Swap Hard Drive
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7KT9W Dell 12TB SAS 3.5" 7.2K 12G Server Hard Drive ST12000NM009G G14-G16
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Hitachi GST Deskstar 7K1000.C HDS721025CLA382 (0F10379) 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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  • $35.00 
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Hitachi GST Deskstar P7K500 HDP725032GLA360 (0A35411) 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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  • $38.19 
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HPE 1TB Internal Hard Drive - SATA/600 Controller - 2.5  Internal Drive - 7200rp
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  • $114.00 
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Dell F617N 300 GB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
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DELL
Refurbished Dell F617N 300 GB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
  • NAND Flash Memory Type: SLC
  • Features: Hot Plug
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: F617N
Hitachi GST Deskstar 7K160 HDS721616PLAT80 (0Y30002) 160GB 7200 RPM 8MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
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Hitachi GST Deskstar 7K160 HDS721616PLAT80 (0Y30002) 160GB 7200 RPM 8MB Cache IDE Ultra ATA133 / ATA-7 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: HDS721616PLAT80
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  • $179.19 
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HP 652757-B21 2TB 7200 RPM SAS 6Gb/s 3.5" LFF SC Midline Hard Drive Bare Drive
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HP 652757-B21 2TB 7200 RPM SAS 6Gb/s 3.5" LFF SC Midline Hard Drive Bare Drive
  • Average Latency: 6Gb/s
  • NAND Flash Memory Type: Hard Drives
  • Parts: 1 Year
  • Labor: 1 Year
  • Model #: 652757-B21
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  • $274.45 
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Hitachi GST Deskstar 7K250 HDS722580VLSA80 (13G0252) 80GB 7200 RPM 8MB Cache SATA 1.5Gb/s 3.5" Hard Drive Bare Drive
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Hitachi GST Deskstar 7K250 HDS722580VLSA80 (13G0252) 80GB 7200 RPM 8MB Cache SATA 1.5Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.8ms
  • Average Latency: 4.17ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: HDS722580VLSA80
Hitachi GST Ultrastar 10K300 HUS103073FL3800 (08K2476) 74GB 10000 RPM 8MB Cache SCSI Ultra320 80pin 3.5" Hard Drive Bare Drive
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Hitachi GST Ultrastar 10K300 HUS103073FL3800 (08K2476) 74GB 10000 RPM 8MB Cache SCSI Ultra320 80pin 3.5" Hard Drive Bare Drive
  • Average Seek Time: 4.3ms
  • Average Latency: 2.99ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: HUS103073FL3800
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  • $115.19 
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TOSHIBA MK2556GSY 7200 RPM 16MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive
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Used - Like New TOSHIBA MK2556GSY 7200 RPM 16MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive
  • Average Seek Time: 11ms
  • Average Write Time: 12ms
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: MK2556GSY
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  • $54.00 
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Hitachi GST Deskstar 7K1000 HDS721075KLA330 (0A35154) 750GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Hitachi GST Deskstar 7K1000 HDS721075KLA330 (0A35154) 750GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Average Latency: 4.17ms
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: HDS721075KLA330
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  • $83.19 
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Fujitsu MAU3036NC 36.7GB 15000 RPM 8MB Cache SCSI Ultra320 80pin 3.5" Hard Drive Bare Drive
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Fujitsu MAU3036NC 36.7GB 15000 RPM 8MB Cache SCSI Ultra320 80pin 3.5" Hard Drive Bare Drive
  • Average Seek Time: 3.3ms
  • Average Write Time: 3.8ms
  • Average Latency: 2ms
  • Parts: 1 year limited
  • Model #: MAU3036NC
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  • $73.19 
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Fujitsu MAT3300NC 300GB 10000 RPM 8MB Cache SCSI Ultra320 80pin 3.5" Hard Drive Bare Drive
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Fujitsu MAT3300NC 300GB 10000 RPM 8MB Cache SCSI Ultra320 80pin 3.5" Hard Drive Bare Drive
  • Average Seek Time: 4.5ms
  • Average Write Time: 5.0ms
  • Average Latency: 2.99ms
  • Parts: 1 year limited
  • Model #: MAT3300NC
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  • $100.19 
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Hitachi GST Ultrastar 15K147 HUS151473VLS300 (0B20875) 74GB 15000 RPM 16MB Cache Serial Attached SCSI (SAS) 3.5" Hard Drive Bare Drive
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Hitachi GST Ultrastar 15K147 HUS151473VLS300 (0B20875) 74GB 15000 RPM 16MB Cache Serial Attached SCSI (SAS) 3.5" Hard Drive Bare Drive
  • Average Seek Time: 3.6ms
  • Average Latency: 2ms
  • Parts: 1 year limited
  • Labor: 1 year limited
  • Model #: HUS151473VLS300
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  • $121.19 
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Maxtor Atlas 15K II SAS 8K147S0 147GB 15000 RPM 16MB Cache Serial Attached SCSI (SAS) 3.5" Hard Drive Bare Drive
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Maxtor Atlas 15K II SAS 8K147S0 147GB 15000 RPM 16MB Cache Serial Attached SCSI (SAS) 3.5" Hard Drive Bare Drive
  • Average Seek Time: 3.4ms
  • Average Write Time: 3.8ms
  • Average Latency: 2ms
  • Parts: 1 year limited
  • Model #: 8K147S0
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  • $123.19 
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WD Ae WD6001F4PZ 6TB 5760 RPM 64MB Cache SATA 6.0Gb/s 3.5" Datacenter Archive HDD
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Used - Like New WD Ae WD6001F4PZ 6TB 5760 RPM 64MB Cache SATA 6.0Gb/s 3.5" Datacenter Archive HDD
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD6001F4PZ
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Samsung HD502HJ Spinpoint F3 HD502HJ 500 GB Hard Drive - 3.5" Internal - SATA (SATA/300)
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Samsung HD502HJ Spinpoint F3 HD502HJ 500 GB Hard Drive - 3.5" Internal - SATA (SATA/300)
  • NAND Flash Memory Type: SLC
  • Features: Hard Drive
  • Model #: HD502HJ
  • $177.68
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  • $48.95 
  • Save: 72%
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Hitachi GST Deskstar T7K500 HDT725050VLA360 (0A33437) 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Hitachi GST Deskstar T7K500 HDT725050VLA360 (0A33437) 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: HDT725050VLA360
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  • $125.19 
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Hitachi GST Deskstar P7K500 0A35389 160GB 7200 RPM 8MB Cache IDE Ultra ATA133 / ATA-7 3.5" Internal Hard Drive Bare Drive
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  • $210.00 
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IBM 42D0638 300GB 10000 RPM SAS 6Gb/s 2.5" SFF Slim Hot-Swap Hard Drive
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HGST MegaScale DC 4000.B HMS5C4040BLE641 (0F22149) 4TB 64MB Cache SATA 6.0Gb/s 3.5" Enterprise CoolSpin Hard Drive Bare Drive
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HGST MegaScale DC 4000.B HMS5C4040BLE641 (0F22149) 4TB 64MB Cache SATA 6.0Gb/s 3.5" Enterprise CoolSpin Hard Drive Bare Drive
  • Height (maximum): 26.1mm
  • Width (maximum): 101.6(+/-0.25)mm
  • Length (maximum): 147mm
  • Model #: 0F22149

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