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Dell 400-AHWR - Dell 600GB 2.5" SAS 15K 12Gb/s Hard Drive
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  • $154.19 
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Dell 400-AJOZ - Dell 300GB 3.5" SAS 10K 12Gb/s Hard Drive
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  • $169.09 
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Western Digital WD20EADS 2TB 5.4K RPM 3Gb/s 32MB 3.5" SATA II HARD DRIVE
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  • $58.00 
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HP MM1000FBFVR Proliant Bl460C Generation 6 Server Blade
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8TB Ent 3.5" SATA 6Gbs SED512E (ST8000NM0105)
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Toshiba AL14SXB 900GB 15K SAS 12Gb/s 2.5" Enterprise Server HDD - AL14SXB90EE
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  • $261.10 
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1RM212-150 Dell 8TB 7.2K SAS 12G LFF Hard Drive
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IBM 02PX539 02YC027 02PX742 V5000 2.4TB 10k 12GB 2.5" SAS Hard Drive
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HP Toshiba 684593-001 661697-001 500GB 7.2K 6G 3.5" SATA Desktop HDD DT01ACA050
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  • $60.10 
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HP ISS 655710-B21 1TB 6G SATA 7.2K rpm SFF Gen8x (655710-B21)
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HP 655710-B21 656108-001 1TB 6G SATA 7.2K 2.5 SC MDL HDD G8/9
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Dell 55H49 3TB 7.2k RPM 3.5" Hot Swap SAS-6Gb/s HDD
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ST4000NM0033, Z1Z, TK, PN 9ZM170-001, FW 0001, Seagate 4TB SATA 3.5 Hard Drive
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  • $241.70 
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HTS541010A9E662 P/N: 0J38093 MLC: DA5747 MAC 655-1751H China HGST 1TB
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  • $70.10 
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HP 656107-001 655708-B21 500GB 7.2K 6G 2.5" SATA HDD ST9500620NS G8 SERVER
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  • $67.00 
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Dell FNW88 1TB 7.2k RPM 3.5" Hot Swap SAS-6Gb/s HDD
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LOT OF 10-Dell R72NV 0R72NV ST9600205SS 600GB 10KRPM 6Gbps 2.5"SAS HDD HardDrive
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  • $480.00 
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Dell 55H49 3TB 7.2k RPM 3.5" Hot Swap SAS-6Gb/s HDD
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Dell 2RR9T 900GB 10k RPM 2.5" 64MB SAS-6Gb/s HDD
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Western Digital WD5000AAKS
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Western Digital
Western Digital WD5000AAKS
  • Model #: 718037720302
HPE ISS 870753-B21 300GB SAS 15K SFF SC DS HDD
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IBM 90Y8873 - 600GB 2.5" SAS 10K 6Gb/s HS Hard Drive
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LOT OF 10 - HP 718292-001 718162-B21 1.2TB 10K RPM 6Gb/s 2.5" SAS Hard Drive
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  • $610.10 
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9W5WV Dell - 1TB 7.2K RPM 6Gb/s SAS 2.5"
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Dell R749K 450GB 15K RPM SAS 3.5" HD
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Dell R749K 450GB 15K RPM SAS 3.5" HD
  • Model #: 8UZPG-00-B01BT-1
LOT OF 10-Seagate ST3000NM0023 3TB 7.2K RPM 6Gb/s 3.5" SAS Hard Drive
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  • $275.00 
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Dell 9V4PG 1TB SATA 7.2K 6GBPS 3.5" Drive WD10EALX-759BA1
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  • $29.95 
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Dell 7YX58 600GB 10k RPM 2.5" SAS-6Gb/s hdd
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ULTRASTAR 7K6 4TB SAS ULTRA
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Dell 990FD 600GB 15K SAS 6GB/s 2.5" HD
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N36YX DELL 4TB 7.2K SATA 3.5 LFF 6Gbps HDD
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N36YX DELL 4TB 7.2K SATA 3.5 LFF 6Gbps HDD
  • Model #: a68-777135000252844
Dell M020F 500gb 7.2k 3.5 Sata HDD
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Dell 2T51W 1 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
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Dell 600 GB Hard Drive - SAS (12Gb/s SAS) - 2.5" Drive - Internal
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  • $185.00 
202V7 Dell WD4001FYYG Original 4TB 7.2K RPM 6Gb/s 3.5" SAS SERVER HDD Hard Drive
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Lot of 4 Dell 146GB 1DKVF Seagate ST3300657SS-H 15000RPM SAS 3.5" Hard Drive
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  • $98.00 
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Fujitsu   MHZ2160BH G1 160GB 2.5" SATA II Laptop Hard Drive
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  • $48.19 
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Dell 400-AVBX - Dell 2.4TB 2.5" SAS 10K 12Gb/s Hard Drive
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  • $600.00 
HE161HJ Samsung 160gb 7.2k Rpm Sata 3.5inch Hard Drive
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  • $45.00 
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5JH5X ST4000NM0295 Dell 4TB 7.2KRPM 12Gb/s 3.5"SAS SERVER HDD Hard Drive W/Caddy
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  • $74.95 
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  • $68.95 - $74.95
J9F49A HPE MSA 1.8TB 12G SAS 10K SFF 2.5" DP 512e ENT HDD 787649-001
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Dell 14X4H 014X4H HDEPC01DLA51 MG03SCA300 3TB 7200 RPM 3.5 SAS Hard Drive EE2
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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:

the Muttonmastwer
5/11/2026 11:18:09 AM
Hasn't broken yet

“ I have it attached via USB on my desktop and it has all my work on it, safe from Windoze crash damage or erasure on OS re-installs. ”

WD Blue 500GB Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 16MB Cache 3.5 Inch - WD5000AAKX