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H8DVC ST9300653SS Dell SAVVIO 300GB 15K RPM 6Gbps 2.5" SAS SERVER HDD Hard Drive
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  • $48.00 
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WD Purple Pro WD142PURP 14 TB Hard Drive - Internal - SATA
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  • $715.00 
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FM501 0FM501 Dell 450GB 15K RPM 3Gb/s 3.5" SAS HDD Hard Drive ST3450856SS
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  • $99.00 
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RN828 ST3300555SS Dell 300GB 15K RPM 3Gbps HotSwap 3.5" SAS HDD Hard Drive
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  • $64.95 
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Dell 55RMX 055RMX 500GB 6G 7.2K 2.5" SAS Hard Drive ST9500620SS
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  • $37.90 
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Dell CONSTELLATION.2 9W5WV ST91000640SS 1TB 7200RPM 6Gbps 2.5"SAS HDD Hard Drive
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  • $40.00 
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DPD14 SSDSC2BA800G4R-DELL INTEL 800GB 6GB SATA 2.5" HOT PLUG SOLID STATE SSD
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  • $721.89 
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Dell YJ0GR 300GB 10k RPM 6Gbps SAS 2.5" Hard Drive w/ Caddy R Series 0B25654
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  • $41.00 
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V8FCR DELL ENTERPRISE CLASS  3.5" 3Gbps SATA HARD DRIVE 1TB 7200RPM
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  • $79.00 
Dell G11X0 600 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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  • $78.00 
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Dell 2RR9T // ST900MM0006 900GB SAS 10K 2.5" Hard Drive with Tray
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  • $50.00 
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ST3300657SS F617N Dell CHEETAH 300GB 15K RPM 6Gb/s 3.5" SAS Hard Drive
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DELL
ST3300657SS F617N Dell CHEETAH 300GB 15K RPM 6Gb/s 3.5" SAS Hard Drive
  • Model #: ST3300657SS-0F617N-F617N-dell-new-drive
DELL 300GB 15K SAS 2.5" HDD  H8DVC - ST9300653SS - 0YVFK8 - 0C8TC5 - C8TC5 SED
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  • $54.00 
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Y4MWH Dell EqualLogic 0Y4MWH 600GB SAS 10K 2.5" 6Gbps HDD Hard Drive ST9600205SS
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  • $40.00 
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ST300MM0006-DELL 300GB 10K 6G SFF SAS HDD
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Dell 300GB 6G SAS 15K 2.5 HDD H8DVC NWH7V R610 R710 R620 R720 R630 R730
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  • $89.95 
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FNW88 DELL 1TB 7.2K 3.5" SAS 6Gb/s HDD with tray 0FNW88 ST1000NM0023
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  • $52.95 
OEM DELL EQUALLOGIC PS5000E PS6000E 2TB 7.2K SATA HDD ST2000NM0011 2P4N9 W/TRAY
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  • $98.95 
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hpe 872477-b21 872736-001 600gb 12g sas 10k 2.5 sff ent hdd sc ds new factory sealed
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  • $250.00 
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Dell 4X1DR // WD9001BKHG-18D22V1 900Gb 10K SAS 6Gbps 2.5" HDD
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  • $46.00 
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Dell CGKW9 1.8TB 10K 4Kn SAS-12Gbps 2.5" Hot-Plug Hard Drive
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  • $95.10 
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F5HFM-FS DELL 1.2TB 10K SAS 2.5" 12Gb HDD KIT FOR R640 R740 R740XD R940 C6420
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  • $150.00 
AL13SEB600 5TFDD Dell 600GB 10000RPM 6Gbps 2.5" SAS SERVER HDD Hard Drive
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8WR71 ST9300653SS Dell EQL 300GB 15000RPM 6Gbps 2.5" SAS SERVER HDD Hard Drive
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"Dell 400-AJQD / 6WCT7 1.2TB 2.5"" 10K RPM SAS Hard Drive Kit NRX7Y"
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  • $150.00 
4Hgtj 600Gb 15K 2.5 12Gbs Sas Hdd
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4Hgtj 600Gb 15K 2.5 12Gbs Sas Hdd
  • Model #: a54b4070-6c65-4-N2
401-ABDC DELL 1.2TB 10K SAS 3.5" 12Gb HDD KIT FOR R640 R740 R740XD R940 C6420
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  • $150.00 
Dell 400-ATKK / JYP2T 2TB 3.5" 6Gbps 7.2K RPM 512N SATA Hard Drive Kit X7K8W
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  • $275.00 
HGST HUH728060ALE600 - 6TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive
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  • $175.10 
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Dell 400-ATIN 600GB 15000 RPM SAS 12Gb/s 2.5" 512n Hot-plug Drive
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  • $144.45 
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9PR63 09PR63 Dell ST4000NM0033 ES.3 4TB 7.2K RPM 6Gb/s 3.5" SATA HDD Hard Drive
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  • $225.00 
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DELL ENTERPRISE ACCESSORIES 400-ALQZ 1TB 3.5IN 7.2K RPM NLSAS 12GBPS
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  • $177.45 
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Hitachi HUC106030CSS600 2.5" 300GB
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Hitachi HUC106030CSS600 2.5" 300GB
  • Model #: HUC106030CSS600
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  • $70.00 
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HP 495276-003 600GB Seagate ST3600002FC 3.5"Fibre Channel  10k Hard Drive w/Tray
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  • $30.00 
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400-AHIW Dell - 8TB 7.2K 3.5" SAS HD
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DELL
400-AHIW Dell - 8TB 7.2K 3.5" SAS HD
  • Model #: 8WWE8-00-B01BT-1
Dell 36RH9 036RH9 1.2TB HDD 10K SAS 2.5" Seagate ST1200MM0088 w Caddy G11 G12
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  • $52.95 
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IBM SEAGATE ST32000444SS CONSTELLATION ES 2TB 3.5" 7.2K RPM 16MB SAS HARD DRIVE
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  • $72.95 
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NetApp IBM HGST X425A-R6 108-00321 18R1085 1.2TB 10K SAS 2.5" HDD 0B28479
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  • $45.00 
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HP 483095-001 160GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
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  • $45.00 
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Dell 400-ALRY - Dell 4TB 3.5" Nearline SAS 7.2K 12Gb/s Hard Drive
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  • $400.00 
Dell 4TB 7.2K SAS 12Gb/s 3.5" Hard Drive PowerEdge T330 T430 T630 R530 R630 R730
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  • $400.00 
4TB 6G 7.2K 64MB Cache 3.5" Hitachi Hard DriveHUS724040ALA640 0F19459
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  • $100.10 
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HTS545032A7E680 HITACHI 320GB 5400RPM 2.5-INCH SATA HARD DRIVE
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  • $48.95 
HPE 791034-B21 1.80 TB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS)
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  • $84.00 
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HPE 10TB 3.5" SAS 7200rpm Internal Hard Drive 857644B21
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Dell 400-ANFK - Dell 4TB 3.5" Nearline SAS 7.2K 12Gb/s Hard Drive
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  • $400.00 
HPE 286778-b22 73 GB Hard Drive - 3.5" Internal - SCSI (Ultra320 SCSI)
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  • $75.00 
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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