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HP/Seagate Exos X16 ST12000NM006J 12TB 7.2K RPM SAS 12Gb/s 512e 256MB 3.5in Refurbished HDD
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Seagate
Refurbished HP/Seagate Exos X16 ST12000NM006J 12TB 7.2K RPM SAS 12Gb/s 512e 256MB 3.5in Refurbished HDD
  • Brand: HP/Seagate
  • Series: Exos X16
  • Capacity: 12TB
  • RPM: 7200 RPM
  • Model #: ST12000NM006J-HP
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  • $339.99 
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Dell 400-ASGQ - Dell 300GB 2.5" SAS 15K 12Gb/s Hard Drive
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DELL
Dell 400-ASGQ - Dell 300GB 2.5" SAS 15K 12Gb/s Hard Drive
  • NAND Flash Memory Type: SLC
  • Average Latency: 12Gb/s
  • Model #: 400-ASGQ
Western WD1005FBYZ Digital Gold WD1005FBYZ 1 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
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Western Digital
Refurbished Western WD1005FBYZ Digital Gold WD1005FBYZ 1 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
  • Part Number: WD1005FBYZ
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: WD1005FBYZ
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  • $150.00 
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ST1000NM000A Seagate Exos 7E8 1TB 3.5" SATA  HDD 7200RPM 6Gb 256MB Hard Drive
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Dell/Seagate Exos X16 ST12000NM006J 12TB 7.2K RPM SAS 12Gb/s 512e 3.5in Refurbished HDD
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Seagate
Refurbished Dell/Seagate Exos X16 ST12000NM006J 12TB 7.2K RPM SAS 12Gb/s 512e 3.5in Refurbished HDD
  • Brand: Dell/Seagate
  • Series: Exos X16
  • Capacity: 12TB
  • RPM: 7200 RPM
  • Model #: 0M1C0T-NOTRAY
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  • $339.00 
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Seagate Exos X18 ST12000NM000J 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
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Seagate Exos X18 ST12000NM000J 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST12000NM000J
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Seagate Cheetah 15K.6 ST3146356SS 146GB 15000 RPM 16MB Cache SAS 3Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate
Seagate Cheetah 15K.6 ST3146356SS 146GB 15000 RPM 16MB Cache SAS 3Gb/s 3.5" Internal Hard Drive Bare Drive
  • Average Seek Time: 3.4ms
  • Average Write Time: 3.9ms
  • Average Latency: 2ms
  • Parts: 30 DAYS WARRANTY
  • Model #: ST3146356SS
  • $113.00
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  • $64.00 
  • Save: 43%
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HGST HDN724040ALE640 - 4TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive
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HGST HDN724040ALE640 - 4TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive
  • NAND Flash Memory Type: Others
  • Model #: HDN724040ALE640
HP 516810-001 300Gb 15000Rpm 6Gbits Dual Port Sas Lff 3.5Inch Hard Disk Drive With Tray
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HP
HP 516810-001 300Gb 15000Rpm 6Gbits Dual Port Sas Lff 3.5Inch Hard Disk Drive With Tray
  • Flash Memory Capacity: 300
  • NAND Flash Memory Type: SLC
  • Model #: 516810-001
WD9001BKHG-18D22V1 Dell 900GB 10K SAS 6G SFF Hard Drive
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HKK8C PX02SMF040 Dell 400GB eMLC 12G Hot Swap 2.5in SAS Solid State Drive (SSD)
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  • $276.88 
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HDEPQ00DLA51 Dell 4TB 7.2K SATA 6G LFF Hard Drive
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Seagate 500GB Barracuda Pro SATA 6Gb/s 128MB Cache 2.5-Inch Internal Hard Drive (ST500LM034)
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Seagate Constellation CS ST1000NC001 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Enterprise Internal Hard Drive Bare Drive
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Seagate
Seagate Constellation CS ST1000NC001 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Enterprise Internal Hard Drive Bare Drive
  • Average Seek Time: 9.5ms
  • Average Write Time: 10.5ms
  • Parts: 3 Year Warranty from Reseller
  • Labor: 3 Year Warranty from Reseller
  • Model #: ST1000NC001
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  • $78.00 
  • Free Shipping
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Dell 1.8TB 10K 12Gbps SAS 2.5 HDD 512e (0WRRF) New
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HP 507632-B21 2TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
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HP 507632-B21 2TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
  • Average Latency: 3Gb/s
  • NAND Flash Memory Type: others
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: 507632-B21
  • $126.58
  •  
  • $110.00 
  • Save: 13%
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HPE EH000900JWHPP - HPE 900GB 2.5" SAS 15K 12Gb/s Solid State Drive
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HP
HPE EH000900JWHPP - HPE 900GB 2.5" SAS 15K 12Gb/s Solid State Drive
  • NAND Flash Memory Type: SLC
  • Model #: EH000900JWHPP
  • $668.79 - $672.15
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Seagate Desktop SSHD ST1000DX001 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Solid State Hybrid Drive Bare Drive
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Seagate Desktop SSHD ST1000DX001 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Solid State Hybrid Drive Bare Drive
  • Average Seek Time: <8.5ms
  • Average Write Time: <8.5ms
  • Average Latency: 4.16ms
  • Flash Memory Capacity: 8GB
  • Model #: ST1000DX001
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  • $165.10 
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Seagate Constellation ES.3 ST4000NM0023 4TB 7200 RPM 128MB Cache SAS 6Gb/s 3.5" Hard Drive
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Refurbished Seagate Constellation ES.3 ST4000NM0023 4TB 7200 RPM 128MB Cache SAS 6Gb/s 3.5" Hard Drive
  • NAND Flash Memory Type: SLC
  • Average Latency: 4.16ms
  • Features: Capacity-Optimized Enterprise Hard Drive for Bulk-Data Applications - Highest-capacity large form factor enterprise drive - up to 4TB - for demanding data growth - Sixth-generation drive technology with SAS and SATA interfaces for 24x7 reliability - Enhanced error correction, super parity and end-to-end SAS-based data integrity for accurate data storage - Industry-leading rotational vibration
  • Usage: For Enterprise Storage
  • Model #: ST4000NM0023
846524-B21 846523-001 HPE 1TB 7.2K RPM 12Gbps 3.5" SAS HDD Hard Drive W/Caddy
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  • $88.95 
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1VD100-136 Dell 2TB 7.2K SATA 6G SFF Server Hard Drive
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Dell 55H49 EMC ST3000NM0023 3 TB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
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DELL
Refurbished Dell 55H49 EMC ST3000NM0023 3 TB Hard Drive - 3.5" Internal - SAS (6Gb/s SAS)
  • Average Seek Time: 4.16ms
  • Part Number: 55H49
  • NAND Flash Memory Type: SLC
  • Parts: 30 Days
  • Model #: 55H49
Seagate Exos X14 ST12000NM0038 12 TB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS) (ST12000NM0038)
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  • $474.45 
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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