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Dell ST4000NM0023 4TB 6G 7200RPM SAS 3.5" Hard Drive
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  • $47.95 
Dell 300GB 6G 15K 3.5" SAS HT953 0HT953 HDD Hard Drive
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  • $40.00 
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Dell 146GB 15K 3.5 SAS Hard Drive w/ Tray XK111 MBA3147RC
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  • $56.90 
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Dell T4XNN 1TB 7.2K SATA 3.5" 6Gb/s Hard Drive
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  • $80.00 
WD1002FBYS-DEL DELL CAVIAR RE3 1TB 7200RPM HARD DRIVE
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  • $57.95 
ST33000650NS-DELL DELL 3TB 7200RPM SATA 6GBPS HARD DRIVE
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  • $105.00 
ST91000640SS-DELL 1TB 7200RPM DP LFF SAS HARD DRIVE
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  • $48.00 
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Dell 900GB 6G 10K 2.5" SAS 2RR9T 02RR9T HDD Hard Drive
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  • $49.95 
DELL ST3600057SS-DELL 600GB 15K 6G LFF SAS HARD DRIVE
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  • $93.95 
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Dell 3TB  7.2K 3.5" NL SAS 6Gbs HDD (14X4H-CO2)
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  • $73.95 
4RY5N 1.2TB 10000RPM SAS 2.5Inch Dell Hard Drive
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  • $92.00 
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Dell 1.2TB 6G 10K 2.5 SAS T6TWN Hard Drive
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  • $95.00 
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Dell YJ0GR 300GB SAS 10k 2.5" Hard Drive 6GBPS With Tray
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  • $54.00 
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H2VGX 1.2TB 10000RPM SAS 2.5Inch Dell Hard Drive
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  • $83.00 
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Dell 3TB 3.5" Hard Drive 14X4H 6G 7.2K SAS 014X4H
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  • $118.95 
Dell 1P7DP - 2TB NL SAS 7.2K 6GBPS 3.5" Hard Drive
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  • $135.00 
Dell 300GB 15K 6Gbps SAS 3.5 HDD (ST3300657SS)
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  • $68.00 
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Dell 300GB 15K 6Gbps SAS 3.5 HDD (F617N)
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  • $69.95 
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Dell 4TB 6G 7.2K 3.5" SAS 529FG 0529FG HDD Hard Drive
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  • $125.00 
Dell ND8MW - 600GB 15K SAS 12.0Gbps 2.5Inch Hard Drive
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  • $105.00 
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Dell T6TWN - 1.2TB 2.5" SAS 10K 6Gb/s HS Hard Drive
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  • $95.00 
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49Y1866 49Y1870 49Y1869 IBM 600GB 15K 6GBPS SAS 3.5" HS 49Y1870 HDD
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  • $188.95 
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P4PY3 1.8TB 10000RPM SAS 2.5Inch Dell Hard Drive
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  • $94.00 
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NF8WP 1.8TB 10000RPM SAS 2.5Inch Dell Hard Drive
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  • $117.99 
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Dell 1P7DP - 2TB NL SAS 7.2K 6GBPS 3.5" Hard Drive
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  • $135.00 
Dell 2TB 2.5" Nearline SAS 7200 RPM 12Gb/s Hard Drive
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  • $185.00 
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HP 500GB 6G 7.2K 2.5" SATA 656107-001 655708-B21 Hard Drive
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  • $52.00 
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MBA3073RC-DEL FUJITSU 73GB 15000RPM SAS 3GBPS HARD DRIVE
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  • $44.00 
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IBM 600GB 6G 15K 3.5" 44W2244 44W2245 44W2246 HARD DRIVE
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  • $139.95 
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EG1800JEHMD 1.8TB 10000RPM SAS 2.5Inch HP Hard Drive
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  • $98.95 
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863731-B21 HPE 400GB SSD SATA LFF 6G HARD DRIVE (863731-B21)
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  • $765.89 
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DELL 7YX58 600gb 10k 2.5 Sas Drive 6 Gbs
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  • $57.50 
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PT27W 1.8TB 10000RPM SAS 2.5Inch Dell Hard Drive
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  • $192.00 
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Dell 4TB 3.5" Nearline SAS 7200 RPM 6Gb/s Hard Drive
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  • $217.00 
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FUJITSU 146GB 15K 3.5" SAS DRIVE MBA3147RC
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  • $49.90 
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Dell 4TB 3.5" SAS 7200 RPM 12Gb/s Hard Drive
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  • $220.00 
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Dell 4TB 3.5" Nearline SAS 7200 RPM 6Gb/s Hard Drive
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  • $227.00 
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Dell 4TB 3.5" Nearline SAS 7200 RPM 12Gb/s Hard Drive
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  • $232.00 
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HPE 900 GB Hard Drive - SAS (12Gb/s SAS) - 2.5" Drive - Internal
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  • $256.00 
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Dell 4TB 3.5'' Nearline SAS 7200 RPM 6Gb's Hard Drive
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  • $230.00 
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Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-AJQN) (400-AJQN)
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  • $278.00 
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T4XNN Dell 1-TB 6G 7.2K 3.5 SATA HDD w/F238F
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  • $88.00 
Dell 4TB 3.5" Nearline SAS 7200 RPM 6Gb/s Hard Drive
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  • $260.00 
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T4XNN Dell 1-TB 6G 7.2K 3.5 SATA HDD w/F238F
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  • $78.00 
Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-AVWT) (400-AVWT)
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  • $282.00 
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Dell 4TB 3.5'' Nearline SAS 7200 RPM 6Gb's Hard Drive
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  • $256.00 
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Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-BBWG) (400-BBWG)
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  • $282.00 
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DELL T4XNN DELL 1TB 7.2K SATA 3.5 6Gbps HDD
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  • $88.00 
Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-BEGJ) (400-BEGJ)
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  • $280.00 
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Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-AMZT) (400-AMZT)
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  • $280.00 
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Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-AYLO) (400-AYLO)
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  • $280.00 
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Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-AVUQ) (400-AVUQ)
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  • $282.00 
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Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-AVVE) (400-AVVE)
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  • $282.00 
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Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-AVWC) (400-AVWC)
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  • $277.00 
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400-ATKL 4TB 7.2K SAS 3.5" 12Gb/s HARD DRIVE REPLACEMENT KIT
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  • $450.00 
Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-AJQW) (400-AJQW)
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  • $295.00 
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Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-AJQX) (400-AJQX)
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  • $280.00 
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Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (400-AYPZ) (400-AYPZ)
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  • $280.00 
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Dell 8TB 3.5'' Nearline SAS 7200 RPM 12Gb's Hard Drive
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  • $275.00 
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400-BLFB FGDRM 4TB 7.2K SAS 3.5" 12Gb/s HARD DRIVE REPLACEMENT KIT
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  • $450.00 
400-ALNY 4TB 7.2K SAS 3.5" 12Gb/s HARD DRIVE REPLACEMENT KIT
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  • $450.00 
DELL XRRVX Dell 900GB10K 2.5'' SAS SED/FIPS 6Gbs HDD
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  • $75.00 
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Dell 8TB 3.5" Nearline SAS 7200 RPM 12Gb/s Hard Drive
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  • $275.00 
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400-ALRV 4TB 7.2K SAS 3.5" 12Gb/s HARD DRIVE REPLACEMENT KIT
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  • $450.00 
400-ALRT 4TB 7.2K SAS 3.5" 12Gb/s HARD DRIVE REPLACEMENT KIT
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  • $450.00 
400-ALOV 4TB 7.2K SAS 3.5" 12Gb/s HARD DRIVE REPLACEMENT KIT
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  • $450.00 
Dell 9W5WV Original Dell 1TB 7.2K SAS 2.5 drives w/tray
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  • $77.95 
Dell THGNN 4TB 6Gbps 7.2K 3.5" SATA Internal Hard Drive
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  • $270.00 
Dell 8TB 3.5" Nearline SAS 7200 RPM 12Gb/s Hard Drive
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  • $275.00 
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CFMWR DELL 1TB 7.2K SAS 2.5" 12Gb/s 128MB 512e HDD FACTORY SEALED FS
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  • $150.00 
Dell 8TB 3.5" Nearline SAS 7200 RPM 12Gb/s Hard Drive
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  • $275.00 
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Dell 8TB 3.5" Nearline SAS 7200 RPM 12Gb/s Hard Drive
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  • $275.00 
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THGNN Compatible Dell 4TB 6G 7.2K 3.5 SATA HDD Hard Drive
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  • $270.00 
Dell 1000GB Internal 7200RPM 3.5" (V8FCR) HDD
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  • $48.95 
Dell 400-APZH - Dell 960GB 2.5" SATA  6Gb/s Solid State Drive
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  • $1,068.35 
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Dell 300GB 15K 6Gbps SAS 3.5 HDD (F617N-CO2)
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  • $53.95 
400-ALUQ DELL 1TB 7.2K SAS 2.5" 12Gb/s 128MB 512e HDD FACTORY SEALED FS
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  • $150.00 
Dell 2.4TB 2.5" SAS 10,000 RPM 12Gb/s Hard Drive
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  • $325.00 
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Dell 1.8TB 2.5" SAS 10,000 RPM 12Gb/s Hard Drive
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  • $302.00 
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401-ABHQ 2.4TB 10K SAS 2.5" 12Gb/s Hard Drive replacement kit
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  • $500.00 
400-AUVR 2.4TB 10K SAS 3.5" 12Gb/s Hard Drive replacement hybrid kit
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  • $500.00 
Dell HDD 2TB 7,2K, ST2000NM0023, R755K, F238F, 1P7DP
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  • $78.95 
400-AIOM 1.8TB 10000RPM SAS 2.5Inch Dell Hard Drive
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  • $282.00 
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400-AUTO 2.4TB 10K SAS 2.5" 12Gb/s Hard Drive replacement kit
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  • $500.00 
400-AUYZ 2.4TB 10K SAS 2.5" 12Gb/s Hard Drive replacement kit
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  • $500.00 

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