• In Stock
  • Sold by Newegg
  • Make an Offer
  • New
  • Combo Deals Only
Brands
Show More
Price
Show More
Capacity
Interface
Show More
RPM
Show More
Cache
Form Factor
Usage
Show More
Sold by
All Top Brands
Availability
Condition
Current Promotion
Useful Links
Customer Ratings
  • Peripheral Discounts
  • WD HDD Category Banners
  • WD HDD Category Banners
  • Featured Brands

    See Deals from Western DigitalSee Deals from SeagateSee Deals from SAMSUNG
Sort By:
View:
Synology 12 Bay Expansion Unit DX1215 (Diskless)
Quick View
  •  
  • $747.99 
  • $50.00 Shipping
HUC101212CSS600-DELL DELL 1.2TB 10K 6GBPS SAS 2.5 Hard Drive
Quick View
HDEPQ03D0A51 Dell 1TB 7.2K SATA 6G LFF Hard Drive
Quick View
Dell 400-APGS - Dell 900GB 2.5" SAS 15K 12Gb/s Hard Drive
Quick View
  •  
  • $244.19 
  • Free Shipping
X160K ST9146803SS Dell 146GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
Quick View
DELL
X160K ST9146803SS Dell 146GB 10K RPM 6Gb/s 2.5" SAS HDD Hard Drive
  • Model #: X160K-ST9146803SS-0X160K-dell-new-ATP123
  •  
  • $32.00 
  • Free Shipping
0-HRS YJ2KH ST300MM0008  Dell 300GB 10KRPM 12Gb/s2.5"SAS SERVERHDD Hard Drive V8
Quick View
  •  
  • $55.88 
  • Free Shipping
T871K ST9300603SS Dell 300GB 10K RPM 6Gb/s 2.5" SAS SERVER HDD Hard Drive
Quick View
WFGTH Dell 960GB SAS 2.5" 12Gbs MLC MU SSD Gen14 Solid State Drive KPM5XVUG960G
Quick View
SEAGATE ST8000NM001A 8TB 7200 RPM 256MB SAS 3.5
Quick View
Seagate ST10000NM0206 Enterprise 10TB SAS 3.5" Internal Hard Drive
Quick View
WD1600AAJS Western Digital U717D 160GB 7200RPM 3Gbps 3.5" SATA Hard Drive
Quick View
  •  
  • $48.95 
  • Free Shipping
WD RE WD1003FBYX 1 TB 3.5" Internal Hard Drive
Quick View
  •  
  • $39.99 
7FJW4 Dell ST300MP0005 ENT300GB 15K RPM 12Gb/s 2.5" SAS SERVER HDD Hard Drive
Quick View
XY986 Dell - 2TB 7.2K RPM 12Gb/s SAS 2.5"
Quick View
DELL
XY986 Dell - 2TB 7.2K RPM 12Gb/s SAS 2.5"
  • Model #: d83-109409000123738
LOT OF 10 - Dell 1P7DP ST2000NM0023 2TB 7200RPM 6Gbps 3.5" SAS SERVER Hard Drive
Quick View
  •  
  • $950.00 
  • Free Shipping
Seagate ST10000NM005G Exos X16 10tb sata-6gbps 7.2K 512e 3.5" hdd
Quick View
  •  
  • $365.00 
  • Free Shipping
Seagate 4KN 6 TB 3.5" Internal Hard Drive ST6000NM0014 (ST6000NM0014)
Quick View
  •  
  • $347.45 
Dell MY58D // HUS724030ALS640 SAS 3TB 7.2K 3.5" HDD
Quick View
ST4000NM0023 4TB 7.2K SAS 3.5" 6G HDD for Dell T620 T630 T640 T710
Quick View
  •  
  • $174.95 
  • Free Shipping
ST4000NM0033 Seagate CONSTELLATION 4TB 7200RPM 6Gbps 3.5" SATA HDD Hard Drive
Quick View
ST4000NM0023 4TB 7.2K SAS 3.5" 6G HDD for Dell T420 T430 T440 T605 T610
Quick View
  •  
  • $173.95 
  • Free Shipping
LOT OF 10-Dell EXOS G2G54 ST1200MM0099 1.2TB 10KRPM 12Gbps 2.5"SAS HDD HardDrive
Quick View
  •  
  • $775.00 
  • Free Shipping
4VMHH DELL 1.2TB 10K SAS 2.5" 12Gb HDD KIT FOR R640 R740 R740XD R940 C6420
Quick View
  •  
  • $150.00 
Dell 463-4953 4 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
Quick View
  •  
  • $124.95 
  • Free Shipping
SSDSC2BX800G4 Intel DC S3610 Series 800GB 2.5 inch SATA SSD
Quick View
  •  
  • $99.99 
  • Free Shipping
ST6000NM0034 6TB 7.2K 12G 3.5" SAS HDD for Dell T300 T310 T320 T330 T410
Quick View

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