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    Internal Hard Drives (HDD)

    35 Results
    Top Seller
    Seagate 8TB IronWolf NAS 7200RPM HDD 256MB Cache Internal Hard Drive (ST8000VN004)
    Seagate 8TB IronWolf NAS 7200RPM HDD 256MB Cache Internal Hard Drive (ST8000VN004)
    HD-3CD-SE
    (0)
    Internal hard drive, Designed for NAS storage solutions, 8TB capacity, 3.5’’ form factor, 256MB internal cache, Max 7200 RPM, Three year Rescue Data Recovery service included
    £299.99
    Incl. VAT
    In Stock
    Top Seller
    Seagate 4TB IronWolf NAS 5400RPM HDD 256MB Cache Internal Hard Drive (ST4000VN006)
    Seagate 4TB IronWolf NAS 5400RPM HDD 256MB Cache Internal Hard Drive (ST4000VN006)
    HD-3EU-SE
    (2)
    Internal hard drive, Designed for NAS storage solutions, 4TB capacity, 3.5’’ form factor, 256MB internal cache, Max 5400 RPM, Three year Rescue Data Recovery service included
    £182.99
    Incl. VAT
    In Stock
    Save 4%
    Seagate 20TB Barracuda HDD 7200RPM 512MB Cache Internal Hard Drive (ST20000DM001)
    Seagate 20TB Barracuda HDD 7200RPM 512MB Cache Internal Hard Drive (ST20000DM001)
    STO-SEA-07462
    (0)
    Internal hard drive, 20TB capacity, 3.5’’ form factor, SATA III connectivity, 7200 RPM, 512MB internal cache
    Price reduced from £659.99 to £629.99
    Incl. VAT
    In Stock
    Seagate 12TB IronWolf NAS 7200RPM HDD 256MB Cache Internal Hard Drive (ST12000VN0008)
    Seagate 12TB IronWolf NAS 7200RPM HDD 256MB Cache Internal Hard Drive (ST12000VN0008)
    HD-3BT-SE
    (0)
    Internal hard drive, Designed for NAS storage solutions, 12TB capacity, 3.5’’ form factor, 256MB internal cache, Max 7200 RPM, Three year Rescue Data Recovery service included
    £449.99
    Incl. VAT
    In Stock
    Seagate 28TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive
    Seagate 28TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive
    STO-SEA-06857
    (0)
    Internal hard drive, Designed for NAS storage solutions, 28TB capacity, 512MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £1,099.99
    Incl. VAT
    In Stock
    Save 10%
    Seagate 6TB IronWolf NAS HDD 5400RPM 256MB Cache Internal Hard Drive
    Seagate 6TB IronWolf NAS HDD 5400RPM 256MB Cache Internal Hard Drive
    STO-SEA-00561
    (0)
    Internal hard drive, Designed for NAS storage solutions, 6TB capacity, 3.5’’ form factor, 256MB internal cache, Max 5400 RPM, Three year Rescue Data Recovery service included
    Price reduced from £279.95 to £249.95
    Incl. VAT
    In Stock
    Seagate 12TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    Seagate 12TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    STO-SEA-00567
    (0)
    Internal hard drive, Designed for NAS storage solutions, 12TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £499.99
    Incl. VAT
    In Stock
    Seagate 4TB IronWolf PRO NAS HDD 7200RPM 128MB Cache Internal Hard Drive
    Seagate 4TB IronWolf PRO NAS HDD 7200RPM 128MB Cache Internal Hard Drive
    STO-SEA-00563
    (0)
    Internal hard drive, Designed for NAS storage solutions, 4TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £209.99
    Incl. VAT
    In Stock
    Seagate 4TB Barracuda HDD 5400RPM 256MB Cache Internal Hard Drive (ST4000DM004)
    Seagate 4TB Barracuda HDD 5400RPM 256MB Cache Internal Hard Drive (ST4000DM004)
    HD-37T-SE
    (1)
    Internal hard drive, 4TB capacity, 3.5’’ form factor, SATA III connectivity, 5400 RPM, 256MB internal cache
    £159.95
    Incl. VAT
    In Stock
    Seagate 6TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    Seagate 6TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    STO-SEA-00564
    (0)
    Internal hard drive, Designed for NAS storage solutions, 6TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £269.99
    Incl. VAT
    In Stock
    Seagate 10TB IronWolf NAS 7200RPM HDD 256MB Cache Internal Hard Drive (ST10000VN000)
    Seagate 10TB IronWolf NAS 7200RPM HDD 256MB Cache Internal Hard Drive (ST10000VN000)
    HD-3ES-SE
    (0)
    Internal hard drive, Designed for NAS storage solutions, 10TB capacity, 3.5’’ form factor, 256MB internal cache, Max 7200 RPM, Three year Rescue Data Recovery service included
    £409.99
    Incl. VAT
    In Stock
    Seagate 10TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    Seagate 10TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    STO-SEA-00566
    (0)
    Internal hard drive, Designed for NAS storage solutions, 10TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £409.99
    Incl. VAT
    In Stock
    Seagate 8TB Barracuda HDD 5400RPM 256MB Cache Internal Hard Drive (ST8000DM004)
    Seagate 8TB Barracuda HDD 5400RPM 256MB Cache Internal Hard Drive (ST8000DM004)
    HD-39Z-SE
    (3)
    Internal hard drive, 8TB capacity, 3.5’’ form factor, SATA III connectivity, 5400 RPM, 256MB internal cache
    £249.95
    Incl. VAT
    In Stock
    Seagate 8TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    Seagate 8TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    STO-SEA-00565
    (0)
    Internal hard drive, Designed for NAS storage solutions, 8TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £359.99
    Incl. VAT
    In Stock
    WD 8TB Red Plus 5640rpm HDD 256MB Cache Internal NAS Hard Drive (WD80EFPX)
    WD 8TB Red Plus 5640rpm HDD 256MB Cache Internal NAS Hard Drive (WD80EFPX)
    STO-WDC-01661
    (0)
    8TB Hard Drive, WD80EFPX, 3.5 Inch, SATA 6GB/s Interface, 256MB Cache, CMR Technology, Optimal compatibility for NAS systems, 3 Year Warranty
    £369.95
    Incl. VAT
    In Stock
    Seagate 2TB Barracuda HDD 7200RPM 256MB Cache Internal Hard Drive (ST2000DM008)
    Seagate 2TB Barracuda HDD 7200RPM 256MB Cache Internal Hard Drive (ST2000DM008)
    HD-3A5-SE
    (4)
    Internal hard drive, 2TB capacity, 3.5’’ form factor, SATA III connectivity, 7200 RPM, 256MB internal cache
    £129.95
    Incl. VAT
    In Stock
    Save 7%
    WD 12TB Red Plus 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD120EFGX)
    WD 12TB Red Plus 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD120EFGX)
    STO-WDC-08127
    (0)
    12TB Hard Drive, WD120EFGX, 3.5 Inch, SATA 6GB/s Interface, 512MB Cache, CMR Technology, Optimal compatibility for NAS systems, 3 Year Warranty
    Price reduced from £529.99 to £490.00
    Incl. VAT
    In Stock
    WD 6TB Red Plus 5400rpm HDD 256MB Cache Internal NAS Hard Drive (WD60EFPX)
    WD 6TB Red Plus 5400rpm HDD 256MB Cache Internal NAS Hard Drive (WD60EFPX)
    HD-59U-WD
    (0)
    Designed for NAS Systems, 6TB Capacity, 3.5’’ Form Factor, 256MB Cache, 7200 RPM, SATA III Connectivity, 185MB/s Max Data Transfer Rate
    £299.99
    Incl. VAT
    In Stock
    WD 12TB Red Pro 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD122KFBX)
    WD 12TB Red Pro 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD122KFBX)
    STO-WDC-08128
    (0)
    Designed for NAS Systems, 12TB Capacity, 3.5’’ Form Factor, 7200 RPM, 512MB Cache, SATA III Connectivity, Max Data Transfer Rate of 267MB/s
    £659.99
    Incl. VAT
    In Stock
    Seagate 20TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    Seagate 20TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    STO-SEA-00570
    (0)
    Internal hard drive, Designed for NAS storage solutions, 20TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £799.99
    Incl. VAT
    In Stock
    WD 6TB Red Pro 7200rpm HDD 256MB Cache Internal NAS Hard Drive (WD6005FFBX)
    WD 6TB Red Pro 7200rpm HDD 256MB Cache Internal NAS Hard Drive (WD6005FFBX)
    STO-WDC-08131
    (0)
    Designed for NAS Systems, 6TB Capacity, 3.5’’ Form Factor, 7200 RPM, 256MB Cache, SATA III Connectivity, Max Data Transfer Rate of 238MB/s
    £309.95
    Incl. VAT
    In Stock
    Save 41%
    Synology HAT5300 3.5" 12TB Serial ATA III NAS Hard Drive
    Synology HAT5300 3.5" 12TB Serial ATA III NAS Hard Drive
    STO-SYN-00709
    (0)
    • Up to 274 MB/s sustained data transfer
    • Up to 23% faster sequential read in Synology NAS
    • Purpose-built for Synology servers running 24/7
    • Automatic firmware updates with DSM
    Price reduced from £1,199.99 to £699.95
    Incl. VAT
    In Stock
    WD 2TB Red Plus 5400rpm HDD 64MB Cache Internal NAS Hard Drive (WD20EFPX)
    WD 2TB Red Plus 5400rpm HDD 64MB Cache Internal NAS Hard Drive (WD20EFPX)
    STO-WDC-01663
    (0)
    2TB Hard Drive, WD20EFPX, 3.5 Inch, SATA 6GB/s Interface, 64MB Cache, CMR Technology, Optimal compatibility for NAS systems, 3 Year Warranty
    £149.99
    Incl. VAT
    In Stock
    Seagate 2TB IronWolf NAS HDD 5900RPM 256MB Cache Internal Hard Drive
    Seagate 2TB IronWolf NAS HDD 5900RPM 256MB Cache Internal Hard Drive
    STO-SEA-00560
    (0)
    Internal hard drive, Designed for NAS storage solutions, 2TB capacity, 3.5’’ form factor, 256MB internal cache, Max 5900 RPM, Three year Rescue Data Recovery service included
    £169.99
    Incl. VAT
    In Stock
    Seagate 24TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive
    Seagate 24TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive
    STO-SEA-07495
    (0)
    Internal hard drive, Designed for NAS storage solutions, 24TB capacity, 512MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £859.99
    Incl. VAT
    Pre Order
    Seagate 8TB IronWolf NAS HDD 5400RPM 256MB Cache Internal Hard Drive
    Seagate 8TB IronWolf NAS HDD 5400RPM 256MB Cache Internal Hard Drive
    STO-SEA-00562
    (1)
    Internal hard drive, Designed for NAS storage solutions, 8TB capacity, 3.5’’ form factor, 256MB internal cache, Max 5400 RPM, Three year Rescue Data Recovery service included
    £309.95
    Incl. VAT
    Pre Order
    Seagate 30TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive
    Seagate 30TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive
    STO-SEA-07496
    (0)
    Internal hard drive, Designed for NAS storage solutions, 30TB capacity, 512MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £1,149.95
    Incl. VAT
    Pre Order
    WD 16TB Red Pro 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD161KFGX)
    WD 16TB Red Pro 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD161KFGX)
    HD-57E-WD
    (0)
    Designed for NAS Systems, 16TB Capacity, 3.5’’ Form Factor, 7200 RPM, 512MB Cache, SATA III Connectivity, Max Data Transfer Rate of 259MB/s
    £699.95
    Incl. VAT
    Pre Order
    WD 4TB Red Plus 5400rpm HDD 128MB Cache Internal NAS Hard Drive (WD40EFZZ)
    WD 4TB Red Plus 5400rpm HDD 128MB Cache Internal NAS Hard Drive (WD40EFZZ)
    STO-WDC-08130
    (0)
    4TB Hard Drive, WD40EFZZ, 3.5 Inch, SATA 6GB/s Interface, 128MB Cache, CMR Technology, Optimal compatibility for NAS systems, 3 Year Warranty
    £189.95
    Incl. VAT
    Pre Order
    Seagate 6TB Barracuda HDD 5400RPM 256MB Cache Internal Hard Drive (ST6000DM003)
    Seagate 6TB Barracuda HDD 5400RPM 256MB Cache Internal Hard Drive (ST6000DM003)
    HD-39D-SE
    (0)
    Internal hard drive, 6TB capacity, 3.5’’ form factor, SATA III connectivity, 7200 RPM, 256MB internal cache
    £179.99
    Incl. VAT
    Pre Order
    WD 8TB Red Pro 7200rpm HDD 256MB Cache Internal NAS Hard Drive (WD8005FFBX)
    WD 8TB Red Pro 7200rpm HDD 256MB Cache Internal NAS Hard Drive (WD8005FFBX)
    STO-WDC-04054
    (0)
    Designed for NAS Systems, 8TB Capacity, 3.5’’ Form Factor, 7200 RPM, 256MB Cache, SATA III Connectivity, Max Data Transfer Rate of 235MB/s
    £359.99
    Incl. VAT
    Pre Order
    Seagate 24TB Barracuda HDD 7200RPM 512MB Cache Internal Hard Drive ST20000DM001
    Seagate 24TB Barracuda HDD 7200RPM 512MB Cache Internal Hard Drive ST20000DM001
    STO-SEA-07499
    (0)
    Internal hard drive, 24TB capacity, 3.5’’ form factor, SATA III connectivity, 7200 RPM, 512MB internal cache
    £699.95
    Incl. VAT
    Pre Order
    Seagate 16TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    Seagate 16TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive
    STO-SEA-00568
    (0)
    Internal hard drive, Designed for NAS storage solutions, 16TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £639.95
    Incl. VAT
    Pre Order
    Seagate 32TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive
    Seagate 32TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive
    STO-SEA-07497
    (0)
    Internal hard drive, Designed for NAS storage solutions, 32TB capacity, 512MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity
    £1,299.95
    Incl. VAT
    Pre Order
    Seagate 16TB Barracuda HDD 7200RPM 512MB Cache Internal Hard Drive
    Seagate 16TB Barracuda HDD 7200RPM 512MB Cache Internal Hard Drive
    STO-SEA-07498
    (0)
    Internal hard drive, 16TB capacity, 3.5’’ form factor, SATA III connectivity, 7200 RPM, 512MB internal cache
    £549.95
    Incl. VAT
    Pre Order

    Internal Hard Drives (HDD)


    Seagate 8TB Barracuda HDD 5400RPM 256MB Cache Internal Hard Drive

    Upgrade your storage with our selection of internal hard drives (HDD) at Overclockers UK. Ideal for expanding your gaming PC's capacity, these drives offer ample space to store everything from extensive media libraries to large-scale projects. With options ranging from 1TB to 20TB and beyond, internal HDDs provide reliable, long-term storage for your most important files. Whether you're building a new PC or upgrading an existing system, our range of internal hard drives combines high capacity with dependable performance. What’s more, you can take your pick from industry-leading manufacturers including Seagate and Western Digital!


    Internal HDDs explained

    Internal hard drives (HDDs) are a type of storage for your computer's operating system, applications, and files. Unlike SSDs, which use flash memory, HDDs store data on spinning magnetic platters, making them a cost-effective solution for large storage needs. They are especially suitable for bulk storage tasks, such as archiving media files, storing backups, and running large-scale applications that don't require the ultra-fast speeds of SSDs.


    A M.2 SSD, 2.5-inch SSD, and 3.5-inch HDD.

    Want to Read More?

    Time for a storage upgrade, but unsure where to start? Don’t worry! This dedicated article on the Overclockers UK Blog has everything you need to know about HDDs and SSDs.

    Read More

    Internal Hard Drives (HDD) FAQ


    What’s the difference between an HDD and an SSD?

    An HDD (Hard Disk Drive) uses spinning disks to store data, while an SSD (Solid State Drive) uses flash memory for faster data access. SSDs are quicker but often more expensive, whereas HDDs offer larger storage capacities at a lower cost.

    How do I choose the right capacity for my internal HDD?

    The right capacity depends on your storage needs. For general use, a 1TB or 2TB drive is usually sufficient. For storing large files such as videos, games, or backups, consider drives with 4TB or more.

    Are internal hard drives reliable for long-term storage?

    Internal HDDs are designed for long-term storage and are highly reliable when used under normal conditions. Regular backups and proper handling can further ensure the longevity of your data.