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    PSUs - ATX and SFX Power Supply Units for PCs

    Unleash the full potential of your gaming rig or professional workstation with our top-tier Power Supply Units (PSUs). Engineered for both hardcore gamers seeking peak performance and professionals demanding unwavering reliability, our PSUs ensure your system runs smoothly under any load. Explore our selection to find the perfect power solution tailored to your needs, and experience the difference that a high-quality PSU can make in your computing experience.
    233 Results
    NEBE-253
    (4)
    High-efficiency ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Platinum, 850 watts rated power, 140 mm fan, fully modular
    149,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAD-011
    (0)
    850 W power, 80 PLUS Gold, ATX 3.1 compliant with 12V-2×6 PCIe, fully modular, 140mm form factor, DC-DC circuitry, +12 V 70.8 A, extensive protection mechanisms, suitable for high-end GPUs
    89,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-042
    (2)
    Compact 1,000-watt power supply, with 80 PLUS Platinum efficiency, SFX form factor including ATX bracket, zero-RPM fan mode & modular design
    184,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-035
    (0)
    Very efficient ATX 3.1 power supply from ASUS, 80 Plus Platinum, 1,200 watts rated power, PCIe 5.1 for graphics cards, fully modular, fan with double ball bearings.
    299,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-043
    (1)
    Powerful 850-watt power supply, with 80 PLUS Platinum efficiency, ATX 3.1 & PCIe 5.1 support, zero-RPM fan mode, modular
    124,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 18%
    NEBE-248
    (0)
    Very efficient ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Gold, 650 watts rated power, 120mm fan, non-modular
    Price reduced from 89,90 € to 72,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEPH-025
    (4)
    Powerful ATX-3.1 850 watt power supply, efficient Gold certification, cables with individually textured strands, silent hybrid mode, fully modular cable management, including 12V-2x6 cable
    109,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 17%
    NEBE-250
    (0)
    Very efficient ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Gold, 850 watts rated power, 120mm fan, non-modular
    Price reduced from 114,90 € to 94,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEPH-022
    (0)
    Powerful ATX-3.1 750 watt power supply, efficient Gold certification, cables with individually textured strands, silent hybrid mode at the push of a button, fully modular cable management, including 12V-2x6 cable
    99,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEPH-033
    (1)
    Powerful ATX 3.1 power supply with 1,200 watts, highly efficient Platinum certification, cables with individually textured strands, fully modular cable management, including 12V 2x6 cable
    159,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEPH-032
    (0)
    Powerful ATX 3.1 power supply with 1,200 watts, highly efficient Platinum certification, cables with individually textured strands, fully modular cable management, including 12V 2x6 cable
    159,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 47%
    ZUAD-865
    (1)
    Dual/Multi-Power Supply Adapter by Kolink, for connecting two power supplies, parallel connection of an unlimited number of power supplies, compact dimensions for flexible placement, for power-hungry mining rigs or gaming PCs
    Price reduced from 1,90 € to 1,00 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 13%
    NEBE-247
    (0)
    Very efficient ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Gold, 550 watts rated power, 120mm fan, non-modular
    Price reduced from 74,90 € to 64,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-027
    (1)
    Powerful SFX power supply with 750 watts, high efficiency: 80 PLUS Gold, modular sleeved cables, high-quality casing, ATX 3.1 compliant with native 12V 2x6-pin connector
    124,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NESE-183
    (0)
    Efficient ATX-3.1 power supply, supports PCIe 5.1, 80 PLUS Gold, 750 watts nominal power, 135mm fan with fluid dynamic bearing, OptiSink design
    124,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-026
    (2)
    Black ATX 3.0 power supply, RGB lighting with Aura Sync, 1200 W rated power, with 80 PLUS Gold certification, ROG design, modular cable management, 135mm fan with semi-passive mode
    199,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-039
    (0)
    80 PLUS Platinum power supply, 1,200 watts continuous power, modular, PCIe 5.1 & ATX 3.1
    439,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-044
    (0)
    80 PLUS Platinum power supply, 1,600 watts continuous power, modular, PCIe 5.1 & ATX 3.1
    429,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEPH-023
    (0)
    Powerful ATX-3.1 750 watt power supply, efficient Gold certification, cables with individually textured strands, silent hybrid mode, fully modular cable management, including 12V-2x6 cable
    99,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-031
    (0)
    Compact SFX-L power supply from ASUS in white, 1,200 W rated power, with 80 PLUS Titanium certification, ROG design, 2x 16-pin PCIe 5.0 / 2x 4+4-pin / 4x 6+2-pin / 6x SATA, modular cable management, 120mm ARGB fan with semi-passive mode
    349,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-045
    (0)
    Powerful 1,000-watt power supply, with 80 PLUS Platinum efficiency, ATX 3.1 & PCIe 5.1 support, zero-RPM fan mode, modular
    149,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 76%
    SIAV-003
    (2)
    Flexible frame for power supplies to absorb disturbing vibrations
    Price reduced from 3,90 € to 0,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-029
    (0)
    Powerful SFX power supply with 850 watts, high efficiency: 80 PLUS Gold, modular sleeved cables, premium casing, ATX 3.1 compliant with native 12V 2x6-pin connector
    144,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEBE-255
    (1)
    Efficient ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Bronze, 450 watts rated power, 120 mm fan
    49,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NESE-152
    (2)
    Compact ATX power supply with 750 W, 80 PLUS Gold efficiency, strong single rail with 62 A, fully modular cable management, four PCIe connectors, 92 mm fan with 3 phases
    134,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 23.10.2026
    NESE-179
    (0)
    Efficient ATX-3.1 power supply, supports PCIe 5.1, 80 PLUS Gold, 850 watts nominal power, 135mm fan with fluid dynamic bearing, OptiSink design
    149,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-044
    (0)
    Powerful 850-watt power supply, with 80 PLUS Platinum efficiency, ATX 3.1 & PCIe 5.1 support, zero-RPM fan mode, modular
    124,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 02.12.2026
    NEAS-034
    (0)
    Efficient ATX 3.0 power supply from ASUS, 80 PLUS Gold, 850 watt nominal power, semi-passive, 135mm fan with double ball bearing
    109,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-036
    (1)
    Very efficient ATX 3.1 power supply from ASUS, 80 Plus Platinum, 1,000 watts rated power, PCIe 5.1 for graphics cards, fully modular, fan with double ball bearings.
    239,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-016
    (1)
    High-end power supply, high efficiency with 80 PLUS Platinum, 83.3 A output (12 V), 120 mm fan, semi-passive mode possible, quiet operation, fully modular cable management, aluminium housing
    239,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-026
    (1)
    Powerful SFX power supply with 750 watts, high efficiency: 80 PLUS Gold, modular sleeved cables, premium casing, ATX 3.1 compliant with native 12V 2x6-pin connector
    124,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEST-099
    (1)
    Quiet black 500-watt power supply from the Strider Essential Series (80 PLUS) with 34A single rail, 2x PCIe, and 120mm fan.
    39,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEBE-266
    (1)
    80 PLUS Platinum efficiency, ATX 3.1 compatible, fully modular cable management, quiet 135mm Silent Wings fan, PCIe 5.1, high-quality capacitors, designed for high-performance gaming systems, engineered for whisper-quiet cooling
    193,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-041
    (0)
    Compact 1,000-watt power supply, with 80 PLUS Platinum efficiency, SFX form factor including ATX bracket, zero-RPM fan mode & modular design
    184,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 18.12.2026
    NEAS-037
    (0)
    Very efficient ATX 3.1 power supply from ASUS, 80 Plus Platinum, 850 watts nominal power, PCIe 5.1 for graphics cards, fully modular, fan with dual ball bearings.
    179,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEST-152
    (4)
    Compact SFX power supply, certified with 80 PLUS Platinum, 750 watts of power, semi-passive 92mm fan, 62.5A single rail on 12V, fully modular cable management
    169,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-018
    (1)
    High-end power supply, high efficiency with 80 PLUS Platinum, 62.5 A output (12 V), 120 mm fan, semi-passive mode possible, quiet operation, fully modular cable management, aluminium housing
    165,31 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-040
    (1)
    Compact 850-watt power supply, with 80 PLUS Platinum efficiency, SFX form factor including ATX bracket, zero-RPM fan mode & modular design
    164,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-048
    (1)
    Powerful 1,200-watt power supply, with 80 PLUS Platinum efficiency, ATX 3.1 & PCIe 5.1 support, zero-RPM fan mode, modular
    159,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-047
    (1)
    Powerful 1,200-watt power supply, with 80 PLUS Platinum efficiency, ATX 3.1 & PCIe 5.1 support, zero-RPM fan mode, modular
    159,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 18.12.2026

    Do You Have the Right Power Supply Unit for Your PC?

    You've got your new high-end motherboard, the latest graphics card, and plenty of memory. But have you considered the appropriate power supply unit? Without the right power, your system won't run smoothly.

    Why the Right Power Supply Unit Is Crucial

    A power supply unit (PSU) provides all components of your PC with electricity. The more powerful your hardware, the more power you need. For most gaming PCs, PSUs between 500 and 800 watts are ideal. Absolute high-end systems with multiple GPUs or CPUs may require even more power.

    Efficiency and Certifications

    Pay attention to your PSU's efficiency. Models with 80 Plus certification are particularly efficient and save energy. The higher the certification (Bronze, Silver, Gold, Platinum, Titanium), the better.

    Cable Management for a Tidy Look

    With modular PSUs, you can easily omit unnecessary cables. This ensures better airflow and a clean look inside your case.

    Types of Power Supply Units

    PSUs differ in:

    • Form Factor: The most common are ATX, SFX, and SFX-L, with ATX being most frequently used in desktop PCs.
    • Cable Management: There are modular, semi-modular, and non-modular PSUs. With modular ones, you can remove unneeded cables, improving airflow and making installation easier.

    How to Determine Which Power Supply Unit You Need

    The choice of the right PSU depends on your system's specific requirements:

    1. Determine Power Requirements: Add up the power consumption of all components, especially the CPU and GPU. Online calculators can help estimate the total requirement.
    2. Future-Proofing: Plan for a buffer of about 20–30% to accommodate future upgrades and extend the PSU's lifespan.
    3. Check Connections: Ensure the PSU has enough and the correct connectors for your hardware, e.g., PCIe connectors for graphics cards.
    4. Consider Efficiency: A more efficient PSU produces less heat and saves on energy costs.

    Is a 600-Watt Power Supply Unit Sufficient?

    Whether a 600-watt PSU is sufficient depends on your individual system:

    • Mid-Range Systems: For many gaming PCs with a single mid-range graphics card and a current CPU, a 600-watt PSU is generally adequate.
    • High-End Systems: If you're using a high-end graphics card or multiple GPUs, a more powerful PSU may be necessary.
    • Future-Proofing: It's advisable to plan for some headroom to allow for future upgrades and reduce the PSU's load.

    Note that the efficiency and quality of the PSU also play a role. A high-quality 600-watt PSU may be more suitable than a less quality one with a higher nominal power.

    Current Trends in Power Supply Units 2025

    The latest PSUs support standards like ATX 3.0 and PCIe 5.0 to meet the high energy demands of modern graphics cards. Some manufacturers are also adopting innovative technologies like silicon carbide semiconductors to enhance efficiency and performance.

    Our Recommendations

    At Caseking, you'll find a wide selection of high-quality PSUs from top brands like Corsair, Phanteks, Lian Li, and Seasonic.

    With the right PSU, you'll get the most out of your gaming rig and ensure you never run out of power.