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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
    NELI-013
    (2)
    High-performance ATX 3.1 power supply with 850 watts, L-shaped design for dual-chamber cases, integrated USB hub with four headers, highly efficient Platinum certification, fully modular cable management
    149,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-028
    (0)
    Efficient ATX 3.0 power supply from ASUS, with 80 PLUS Gold, 1,000 watts rated power, modular cable management, 4x 6+2-pin PCIe connectors, 1x 12+4 PCIe 5.0 connectors
    149,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEPH-030
    (1)
    Powerful ATX 3.1 power supply with 1,000 watts, highly efficient Platinum certification, cables with individually textured strands, fully modular cable management, including 12V 2x6 cable
    149,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEMS-002
    (6)
    High-performance power supply with PCIe 5.0, with 80 PLUS Gold certification, 1,000 watts of power, modular cable management, 7x 12+4-pin connectors for graphics cards, with 12+4-pin PCIe 5.0 12VHPWR connector for high-end graphics cards
    144,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NECS-176
    (0)
    Fully modular 80 Plus Gold power supply, 750 watts continuous power, ATX 3.1 standard with PCIe 5.1 support, zero RPM fan mode, Cybenetics gold certified, 12V 2x6 GPU cable included
    129,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEMT-012
    (1)
    80 PLUS Gold power supply, 1,200 watts continuous power, modular, PCIe 5.1 & ATX 3.1
    129,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAD-015
    (0)
    Power supply with 600 watts, suitable for powerful mid-range systems, ATX 2.4 standard for modern hardware, 80 PLUS Bronze efficiency rating, 120 mm fan, temperature-controlled
    42,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-037
    (0)
    750-watt power supply with 80 PLUS Bronze (85% efficiency), semi-modular design, integrated cable management, quiet 135mm HDB fan, PCIe 5.1 and ATX 3.1 compatibility
    74,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NESE-195
    (0)
    Efficient ATX-3.1 power supply, supports PCIe 5.1, 80 PLUS Gold, 850 watts nominal power, 120 mm fan with hydro-dynamic bearing, OptiSink design
    109,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 23.10.2026
    NEMT-011
    (1)
    80 PLUS Gold power supply, 1,050 watts continuous power, modular, PCIe 5.1 & ATX 3.1
    109,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEKL-047
    (1)
    Premium 80 PLUS Gold power supply rated for 750 Watts output, Fully modular cable management, One 12VHPWR 12+4-pin & four 6+2-Pin PCIe connectors, 2x 4+4-pin CPU & 6x SATA, ATX 3.0 standard
    99,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NESE-196
    (1)
    Efficient ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Gold, 750 watts rated power, 120 mm fan with hydro-dynamic bearing, OptiSink design
    99,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 23.10.2026
    NEST-196
    (0)
    Compact Flex-ATX power supply with 350 watts, for SFF PCs: 29.17 A at 12 V and 1x PCIe 6-pin, with extensive protection circuits, quiet 40mm fan with optimized fan curve, 80 PLUS Gold efficiency with up to 90% efficiency
    89,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEPH-029
    (3)
    High-performance ATX-3.1 power supply with 1,200 watts, highly efficient Platinum certification, cables with individually textured strands, noiseless hybrid mode at the push of a button, fully modular cable management, including 12V-2x6 cable
    189,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAD-014
    (0)
    850 watt power supply, ATX 3.0 compliant, native 12VHPWR support, PCIe 5.0 ready, 80 PLUS Gold efficiency, stable voltage regulation, 120 mm fan with intelligent speed control
    79,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEBE-258
    (0)
    Efficient ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Bronze, 750 watts rated power, 120 mm fan
    72,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAK-015
    (0)
    External AC-DC power supply in black, for DC-DC ATX power supplies, with 150 watts and max. 12.5 A, suitable for ITX and UCFF systems, with 4-pin DIN power connector
    69,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEMT-016
    (0)
    80 PLUS Bronze power supply, 850 watts continuous power, modular, PCIe 5.1 & ATX 3.1
    64,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEBE-256
    (0)
    Efficient ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Bronze, 550 watts rated power, 120 mm fan
    59,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEMT-014
    (0)
    80 PLUS Bronze power supply, 650 watts continuous power, modular, ATX 3.1
    54,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEMT-013
    (0)
    80 PLUS Bronze power supply, 550 watts continuous power, modular, ATX 3.1
    44,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-027
    (0)
    Efficient ATX 3.0 power supply from ASUS, with 80 PLUS Gold, 1,200 watts rated power, modular cable management, 3x 6+2-pin PCIe connectors, 2x 12+4 PCIe 5.0 connectors
    159,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-038
    (0)
    650-watt power supply with 80 PLUS Bronze (85% efficiency), semi-modular design, integrated cable management, quiet 135mm HDB fan, PCIe 5.1 and ATX 3.1 compatibility
    64,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEMT-003
    (0)
    High-performance power supply with PCIe 5.0, with 80 PLUS Gold, 1,200 watts of power, modular cable management, 5x 6+2-pin connectors for graphics cards, with 12+4-pin PCIe 5.0 12VHPWR connector for high-end graphics cards.
    204,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEMT-009
    (2)
    Very efficient ATX-3.1 power supply, supports PCIe 5.1, 80 PLUS Platinum, 1,200 watts nominal power, 135mm fan with fluid dynamic bearing, fully modular
    239,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEST-123
    (0)
    Quiet black 400-watt power supply from the Strider Essential Series (80 PLUS) with 30A single rail, 2x PCIe, and 120mm fan
    39,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAK-009
    (0)
    External 19V DC power supply from Akasa with 65 watts for ITX and UCFF motherboards with 19V DC power connector
    29,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEST-116
    (5)
    Practical mounting bracket for using SFX power supplies instead of ATX PSU
    5,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEBE-257
    (2)
    Efficient ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Bronze, 650 watts nominal power, 120 mm fan
    69,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NECS-171
    (1)
    80 Plus Bronze power supply, 550 watts continuous power, 2x 6+2-pin PCIe & 5x SATA, ATX 2.4 standard
    56,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAD-017
    (0)
    Power supply with 700 watts, suitable for powerful mid-range systems, ATX 2.4 standard for modern hardware, 80 PLUS Bronze efficiency rating, 120 mm fan
    66,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAK-011
    (0)
    External 12V DC power supply from Akasa with 36 watts for Intel NUC motherboards
    14,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAK-010
    (0)
    External 19V DC power supply from Akasa with 120 watts for Mini-ITX or Thin-Mini-ITX motherboards with 19V DC power connection.
    49,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAK-012
    (1)
    External +12V DC power supply from Akasa with 84 watts continuous power for Mini-ITX motherboards or notebooks with +12V DC hollow plug
    39,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAK-013
    (0)
    Internal DC converter board from Akasa with max. 80 W output for Mini-ITX cases - 1x each 24-pin, CPU 4-pin, SATA, Molex 4-pin
    31,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAK-017
    (0)
    External power supply in black, power of 90 W, single rail with 4.73 A, suitable for Intel NUC and ITX systems
    46,90 €
    Incl. VAT, add. delivery costs
    In Stock
    WAZU-1163
    (0)
    External power supply, various applications, 12V 5.0A 60W output, with Molex and SATA
    34,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-033
    (0)
    Efficient ATX 3.0 power supply from ASUS, with 80 PLUS Gold, 1,000 watts rated power, modular cable management, 4x 6+2-pin PCIe connectors, 1x 12+4 PCIe 5.0 connector
    184,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-042
    (0)
    80 PLUS Platinum power supply, 3,000 watts continuous power, modular, PCIe 5.1 & ATX 3.1
    849,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-017
    (1)
    High-end power supply, high efficiency with 80 PLUS Platinum, 70.8 A output (12 V), 120 mm fan, semi-passive mode possible, quiet operation, fully modular cable management, aluminium housing
    214,90 €
    Incl. VAT, add. delivery costs
    In Stock

    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.