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1VD100-136 Dell 2TB 7.2K SATA 6G SFF Server Hard Drive
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Dell 55H49 EMC ST3000NM0023 3 TB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
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DELL
Refurbished Dell 55H49 EMC ST3000NM0023 3 TB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
  • Average Seek Time: 4.16ms
  • Part Number: 55H49
  • NAND Flash Memory Type: SLC
  • Parts: 30 Days
  • Model #: 55H49
Seagate Exos X14 ST12000NM0038 12 TB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS) (ST12000NM0038)
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  • $474.45 
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WD 0F29533 12TB SAS 3.5" Internal Hard Drive
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Western Digital
WD 0F29533 12TB SAS 3.5" Internal Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Model #: 0F29533
HP EG0300FAWHV 300Gb 10000Rpm Sas 6Gbits Dual Port Sff 2.5Inch Hard Disk Drive With Tray
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HP EG0300FAWHV 300Gb 10000Rpm Sas 6Gbits Dual Port Sff 2.5Inch Hard Disk Drive With Tray
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: EG0300FAWHV
WD Purple WD102PURZ 10TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives Bare Drive
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  • $530.00 
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Western Digital Blue WD3200AAKS 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Western Digital Blue WD3200AAKS 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 8.9ms
  • Average Write Time: 10.9ms
  • Average Latency: 4.2ms
  • Model #: WD3200AAKS
Seagate ST3300555SS 9DJ066-051 300GB 15K RPM 3Gb/s 3.5" SAS HDD Hard Drive
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  • $64.95 
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ST4000NM0023 Seagate 9ZM270 4TB 7.2K RPM 6Gb/s 3.5" SAS Hard Drive
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  • $99.00 
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ST1000LM035 Seagate 1RK172-021 1TB 5.4K RPM 6Gbps 2.5"SATA Laptop HDD Hard Drive
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  • $69.25 
1D0F5 Dell 2.4TB SAS 2.5" 10K 12G G14-G16 Hard Drive ST2400MM0159
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DELL
1D0F5 Dell 2.4TB SAS 2.5" 10K 12G G14-G16 Hard Drive ST2400MM0159
  • Model #: 1D0F5-01D0F5-dell-ST2400MM0159-new-atp
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  • $425.00 
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st336706lc 36GB 10000 RPM 4MB Cache SCSI 3.5" Hard Drives
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Seagate
st336706lc 36GB 10000 RPM 4MB Cache SCSI 3.5" Hard Drives
  • NAND Flash Memory Type: SLC
  • Parts: 5 years limited
  • Labor: 5 years limited
  • Model #: ST336706LC
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HGST 0B42266 - HGST 10TB 3.5" SATA 7.2K 6Gb/s Hard Drive
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WD Re 3TB Datacenter Capacity Hard Disk Drive - 7200 RPM Class SAS 6Gb/s 32MB Cache 3.5 inch WD3001FYYG
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WD Re 3TB Datacenter Capacity Hard Disk Drive - 7200 RPM Class SAS 6Gb/s 32MB Cache 3.5 inch WD3001FYYG
  • Average Latency: 6Gb/s
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: WD3001FYYG
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  • $294.45 
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NRG1W WD2000FYYX Dell 2TB 7200RPM 6Gbps 3.5" SATA ENTERPRISE Hard Drive
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  • $165.00 
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WD5000BPKX Western Digital BLACK 500GB 7.2K RPM 6Gbps 2.5" SATA HDD Hard Drive
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  • $54.94 
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Seagate ST4000DM000 Desktop 4TB SATA 3.5" Internal Hard Drive
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  • $195.00 
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Seagate BarraCuda 7200.10 ST380215A 80GB 7200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 3.5" Internal Hard Drive Bare Drive
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Seagate BarraCuda 7200.10 ST380215A 80GB 7200 RPM 2MB Cache IDE Ultra ATA100 / ATA-6 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 11ms
  • Average Write Time: 12ms
  • Average Latency: 4.16ms
  • Parts: 2 years limited
  • Model #: ST380215A
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  • $119.95 
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Seagate SkyHawk AI 16TB 3.5" SATA 256MB 7200RPM Hard Drive ST16000VE000
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Seagate SkyHawk AI 16TB 3.5" SATA 256MB 7200RPM Hard Drive ST16000VE000
  • NAND Flash Memory Type: Hard Drive
  • Average Latency: 4.16ms
  • Usage: For Video Surveillance
  • Model #: ST16000VE000
Dell 342-0898 2TB 7200 RPM SAS 6Gb/s 3.5" Hard Drives
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DELL
Dell 342-0898 2TB 7200 RPM SAS 6Gb/s 3.5" Hard Drives
  • Features: Increase the storage capacity of your system with this 2 TB Hotplug Hard Drive from Dell. Offering a rotational speed of 7200 RPM, this drive provides fast disk access. Featuring Near Line SAS interface, this hard drive delivers enhanced data transfer speeds. This product has been tested and validated on
  • Usage: Ideal for Servers
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 342-0898
Dell G16 12TB 00JHTD 7.2K RPM SAS 12Gb/s 512e 3.5in PowerEdge Refurbished Hard Drive
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DELL
Refurbished Dell G16 12TB 00JHTD 7.2K RPM SAS 12Gb/s 512e 3.5in PowerEdge Refurbished Hard Drive
  • Brand: Dell
  • Series: Generation 14
  • Capacity: 12TB
  • RPM: 7200 RPM
  • Model #: 00JHTD-DELLG14
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  • $309.00 
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Synology 12 Bay Expansion Unit DX1215 (Diskless)
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  • $747.99 
  • $50.00 Shipping
WL 3TB 64MB Cache 5400RPM SATA III (6.0Gb/s) (Low Power & Heavy Duty) 3.5" Internal Hard Drive (NAS & CCTV DVR) w/1 Year Warranty
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WL 3TB 64MB Cache 5400RPM SATA III (6.0Gb/s) (Low Power & Heavy Duty) 3.5" Internal Hard Drive (NAS & CCTV DVR) w/1 Year Warranty
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WL3000GSA6454-DVR
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  • $99.99 
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Seagate BarraCuda 7200.10 ST3160815AS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Seagate BarraCuda 7200.10 ST3160815AS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 11ms
  • Average Write Time: 12ms
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Model #: ST3160815AS
ST1800MM0159 JY57X Dell GEN14 1.8TB 10K RPM 12Gb/s 2.5" SAS SERVER Hard Drive
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ASKAsk me

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