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R734K DELL 500GB 7.2K SAS 2.5 SFF HDD 6GBPS
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55RMX DELL 500GB 7.2K SAS 2.5 SFF HDD 6GBPS
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WDCMN DELL 1.8TB 10K SAS 6Gbps 2.5 HDD
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DELL
WDCMN DELL 1.8TB 10K SAS 6Gbps 2.5 HDD
  • Model #: ed6-429274000262159
0B31878 Dell 1.8TB 10K SAS 6G SFF Hard Drive
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HTS541075A9E680 Hitachi 0J26332 750GB 5.4KRPM 6Gbps 2.5"SATA LaptopHDD HardDrive
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  • $54.88 
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LOT OF 10 - Hitachi 0B28953 600GB 15K RPM 12Gb/s 2.5" SAS SERVER HDD Hard Drive
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  • $540.30 
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00FN229 00FN228 00FN232 IBM 6TB 7.2K RPM 12Gb/s NL G2HS 3.5" SAS HDD Hard Drive
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00FN229 00FN228 00FN232 IBM 6TB 7.2K RPM 12Gb/s NL G2HS 3.5" SAS HDD Hard Drive
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342-0856 DELL 600GB 10K SAS 2.5 SFF HDD 6Gbps
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1H217Z-300 - Seagate 6TB 7200RPM SATA 6Gb/s 128MB Cache 3.5-inch Hard Drive
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  • $175.10 
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9FK066-150 Dell 300GB 10K SAS 6G SFF Hard Drive
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0B24379 Dell 146GB 15K SAS 6G SFF Hard Drive
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HVJNH DELL 1.8TB 10K SAS 6Gbps 2.5 HDD
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DELL
HVJNH DELL 1.8TB 10K SAS 6Gbps 2.5 HDD
  • Model #: c60-750266000253578
D6MV7 DELL 1.8TB 10K SAS 6Gbps 2.5 HDD
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DELL
D6MV7 DELL 1.8TB 10K SAS 6Gbps 2.5 HDD
  • Model #: d08-527428000263628
GY581 Dell Hard Drive GY581
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DELL
GY581 Dell Hard Drive GY581
  • Model #: 3G-003GDXGK4
HP Digitally Signed Firmware 881779-B21 12T 3.5in
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Dell 7KXJR - 1TB 3.5" SAS 7.2K 6Gb/s HS Hard Drive
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  • $178.56 
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LOT OF 10 - Dell 8JRN4 ST9900805SS 900GB 10000RPM 6Gbps 2.5" SAS HDD Hard Drive
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  • $690.00 
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H8DVC DELL 300GB 15K SAS SFF HDD 6Gbps
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DELL
H8DVC DELL 300GB 15K SAS SFF HDD 6Gbps
  • Model #: 425-936813000262393
Dell G998r  250Gb 7200Rpm Sata 3.5In Low Profile(1.0Inch) 7Pin Hard Disk Drive
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  • $49.00 
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Dell T6TWN - 1.2TB 2.5" SAS 10K 6Gb/s HS Hard Drive
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Dell 400-ACXT - Dell 900GB 2.5" SAS 10K 6Gb/s Hard Drive
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  • $99.10 
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LOT OF 10 - Dell TN937 ST3146855SS 146GB 15K RPM 3Gb/s 3.5" SAS HDD Hard Drives
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  • $550.10 
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Dell 400-ANWH - 2TB 3.5" Nearline SAS 7.2K 12Gb/s Hard Drive
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  • $669.09 
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ST3300657SS (LOT OF 3) Seagate 9FL066 300GB 15K RPM 6Gb/s 3.5"SAS HDD Hard Drive
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  • $198.10 
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01EJ727 01EJ590 01EJ869 IBM 400GB 12Gbps 2.5" SAS Solid State Drive
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  • $290.00 
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RMCP3 DELL 1.2TB 10K SAS 6Gbs 2.5 HDD
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DELL
RMCP3 DELL 1.2TB 10K SAS 6Gbs 2.5 HDD
  • Model #: 101-803551000252434
400-AEEU DELL 600GB 10K SAS 3.5 HDD 6Gbps
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DELL
400-AEEU DELL 600GB 10K SAS 3.5 HDD 6Gbps
  • Model #: 033-107189000262480
Dell 400-AJKC 400 GB Solid State Drive - 2.5" Internal - SATA (SATA/600) - Gray
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  • $699.09 
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ST31000640SS Seagate 9EF248-001 1TB 7.2K RPM 3Gb/s 3.5" SAS HDD HARD DRIVES
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  • $62.88 
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R72NV DELL 600GB 10K SAS 2.5 SFF HDD 6Gbps
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DELL
R72NV DELL 600GB 10K SAS 2.5 SFF HDD 6Gbps
  • Model #: 7b4-540159000252321
Dell 341-9875 146 GB Hard Drive - 2.5" Internal - SAS (6Gb/s SAS)
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  • $35.00 
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00FN229 00FN228 00FN232 IBM 6TB 7.2K RPM 12Gb/s NL G2HS 3.5" SAS HDD Hard Drive
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HDEBJ40DAB51 Dell 1.8TB 10K SAS 12G SFF Hard Drive
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14X4H DELL 3TB 7.2K SAS 3.5 HDD 6Gbps
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DELL
14X4H DELL 3TB 7.2K SAS 3.5 HDD 6Gbps
  • Model #: 111-414306000263633
Dell 300 GB 3.5" Internal Hard Drive
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  • $118.19 
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43N12 DELL 1.8TB 10K SAS 6Gbps 2.5 HDD
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DELL
43N12 DELL 1.8TB 10K SAS 6Gbps 2.5 HDD
  • Model #: 88e-429270000262159
C5R62 DELL 600GB 10K SAS 2.5 SFF HDD 6Gbps
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DELL
C5R62 DELL 600GB 10K SAS 2.5 SFF HDD 6Gbps
  • Model #: bf9-057053000262337
WD10EACS Western Digital GREEN 1TB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $63.96 
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Dell 600 GB 3.5" Internal Hard Drive
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WF12F Dell 1TB 7.2K 2.5 SATA w/F830C
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WD800JD Western Digital  NR694 80GB 7200RPM 1.5Gbps 3.5" SATA HDD Hard Drive
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  • $28.95 
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Lot of 7 ST3250310AS BARRACUDA 7200.10 250GB 7.2K 3G 8MB 3.5in SATA Hard Drive
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  • $150.00 
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600GB SAS 3.5" 15K 6G Hard Drive Compatible 400-20613
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Dell KP22D - 6TB 3.5" SATA 7.2K 6Gb/s HS Hard Drive
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  • $299.10 
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WD1003FBYX Western Digital 1TB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $65.00 
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WD2502ABYS Western Digital 250GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $32.96 
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WD1600YD Western Digital CAVIAR 160GB 7.2K RPM 3Gb/s 3.5" SATA Hard Drive
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  • $24.95 
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Dell 400-AENN - Dell 4TB 3.5" SATA 7.2K 6Gb/s Hard Drive
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  • $209.09 
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WD1600YS Western Digital 160GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive (WD1600YS)
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  • $35.96 
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WD2500AAKX Western Digital M4HXR 250GB 7200RPM 3Gbps 3.5" SATA Hard Drive
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DELL Tm727  250Gb 7200Rpm Sataii 8Mb Buffer 7Pin 3.5Inch Hard Disk Drive
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  • $45.00 
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Dell 463-4952 2TB 7200 RPM SATA 6.0Gb/s 3.5" Hard Drive
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  • $219.19 
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600GB SAS 3.5" 15K 6G Hard Drive Compatible 400-ACWS
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Dell 462-6560 10000 RPM SAS 6Gb/s 2.5" Hot-swap Hard Drive
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  • $267.19 
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LOT OF 10-Dell PGHJG ST300MM0006 300GB 10KRPM 6Gb/s 2.5"SAS SERVER HDD HardDrive
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  • $405.00 
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WD2500AVJS Western Digital AV 250GB 7200RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $33.96 
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WD3200AAKX Western Digital 320GB 7200RPM 6Gbps 3.5" SATA HDD Hard Drive
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  • $38.95 
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ST6000NM0034 6TB 7.2K 12G 3.5" SAS HDD for Dell T420 T430 T440 T605 T610
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  • $399.00 
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ST6000NM0034 6TB 7.2K 12G 3.5" SAS HDD for Dell T20 T100 T105 T110
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  • $399.00 
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Western Digital WD2500LPLX 1WPC8 250GB 7200RPM 6Gbps 2.5" SATA Hard Drive
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HGST HTE723225A7A364 0J13212 Travelstar Z7K320 250Gb 7200RPM SATA 2.5" HardDrive
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  • $85.00 
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WD3200AVVS Western Digital AV-GP 320GB 5.4K RPM 3Gbps 3.5" SATA Hard Drive
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  • $42.95 
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WD1601ABYS Western Digital FM569 160GB 7.2K RPM 3Gbps 3.5" SATA HDD Hard Drive
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  • $18.95 
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WD5001AALS Western Digital BLACK 500GB 7.2K RPM 3Gb/s 3.5" SATA HDD Hard Drive
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  • $49.96 
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748385-001  HPE 300GB SAS 6G 15K SFF SC HDD
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ST6000NM0034 1HT27Z-155 Lenovo 6TB 7.2K RPM 12Gb NL G2HS 3.5" SAS HDD Hard Drive
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  • $425.00 
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LOT OF 10-ST2000NM0023 Seagate 2TB 7.2K RPM 6Gb/s 3.5" SAS Hard Drive
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  • $222.95 
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WD5003ABYX Western Digital 500GB 7200RPM 3Gbps 3.5" SATA Hard Drive (WD5003ABYX)
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  • $32.95 
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WD5000AZLX Western Digital 500GB 7200RPM 6Gbps 3.5" SATA Hard Drive (WD5000AZLX)
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  • $42.96 
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WD3202ABYS Western Digital 320GB 7200RPM 3Gb/s 3.5" SATA Hard Drive (WD3202ABYS)
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  • $54.95 
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WD5002ABYS Western Digital M020F 500GB 7200RPM 3Gb/s 3.5" SATA Hard Drive
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  • $30.96 
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1.8TB SAS 2.5" 10K 6G Hybrid Hard Drive Compatible 400-AGTO
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WD2500BEKT Western Digital 250GB 7200RPM 3Gbps 2.5" SATA LAPTOP Hard Drive
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  • $39.96 
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Western Digital WD5003ABYX-01WERA1 JW
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  • $76.00 
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RF9T8 DELL 1.8TB 10K SAS 6Gbps 2.5 HDD
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DELL
RF9T8 DELL 1.8TB 10K SAS 6Gbps 2.5 HDD
  • Model #: 371-853315000252184

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