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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.
    235 Results
    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
    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
    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-043
    (0)
    80 PLUS Platinum power supply, 2,200 watts continuous power, modular, PCIe 5.1 & ATX 3.1
    499,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 17.11.2026
    NEAS-020
    (0)
    White SFX-L power supply with 850 W, high efficiency with 80 PLUS Platinum, 120 mm fan, semi-passive mode possible, quiet operation, fully modular cable management, aluminium housing
    224,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-040
    (0)
    80 PLUS Platinum power supply, 1,000 watts continuous power, modular, PCIe 5.1 & ATX 3.1
    409,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEAS-011
    (2)
    Powerful ATX power supply with 650 watts, high efficiency with 80 PLUS Bronze certificate, sleeved cables, 6 years manufacturer's warranty
    89,90 €
    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-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-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
    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
    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
    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
    NEKL-049
    (1)
    Premium 80 PLUS Gold power supply rated for 1,000 Watts output, Fully modular cable management, One 12VHPWR 12+4-pin & four 6+2-Pin PCIe connectors, 2x 4+4-pin CPU & 7x SATA, ATX 3.0 standard
    139,90 €
    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
    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
    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
    NEMT-002
    (0)
    High-performance power supply with PCIe 5.0, with 80 PLUS Gold, 1,000 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
    159,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEMT-001
    (1)
    High-performance power supply with PCIe 5.0, with 80 PLUS Gold, 850 watt power, modular cable management, 4x 6+2-pin connectors for graphics cards, with 12+4-pin PCIe 5.0 12VHPWR connector for high-end graphics cards
    139,90 €
    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
    NEMT-008
    (0)
    Very efficient ATX-3.1 power supply, supports PCIe 5.1, 80 PLUS Platinum, 1,000 watts rated power, 135mm fan with fluid dynamic bearing, fully modular
    179,90 €
    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
    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
    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
    NESE-133
    (0)
    Fanless 700-watt power supply from Seasonic, high efficiency due to 80 Plus Titanium certification, strong single rail with 58 A, fully modular cable management with flat cables
    249,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NESE-178
    (1)
    Efficient ATX-3.1 power supply, supports PCIe 5.1, 80 PLUS Gold, 1,000 watts rated power, 135mm fan with fluid dynamic bearing, OptiSink design
    214,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEST-197
    (0)
    Redundant power supply, 400 + 400 watt power, 24/7 operation, hot-swap capable, 1U form factor, Cybenetics Bronze certification
    648,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEST-209
    (1)
    High-performance power supply with PCIe 5.0 from SilverStone, with Cybernetics Platinum certification, 1,300 watts power, modular cable management, 8x 12+4-pin connectors for graphics cards, with 12+4-pin 12VHPWR connector for high-end graphics cards
    329,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEST-216
    (0)
    High-performance power supply with PCIe 5.0 from SilverStone, with 80 PLUS Gold, 850 watt power, modular cable management, with 12VHPWR connection for high-end graphics cards
    122,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEST-133
    (1)
    Compact TFX power supply from SilverStone with 300 watts, with two 12V rails, 1x PCIe / 4x SATA / 2x Molex, 80 PLUS Bronze certificate
    59,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 13.11.2026
    NEST-144
    (0)
    Super compact Flex-ATX power supply, with 500 watts of power, 80 PLUS Gold certified, strong 12V single rail with 41.67 amperes, 2x 6+2-pin PCIe / 4x SATA / 3x Molex
    132,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 13.11.2026
    NEST-151
    (0)
    Compact SFX power supply with 80 PLUS Gold, 700 watts of power with a strong 58.4 A 12V single rail, fully modular cable management, 4x 6+2-pin PCIe connectors
    137,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 13.11.2026
    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
    NEST-125
    (0)
    Quiet black 700-watt power supply from the Strider Essential Series (80 PLUS) with 54A single rail, 4x PCIe, and 120mm fan
    66,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEST-176
    (0)
    Redundant power supply, 800 watt power, 24/7 operation, 2-chamber design, hot-swappable, 2U form factor
    852,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 04.12.2026
    NEST-187
    (0)
    80-PLUS-Bronze power supply, 750 watts rated power, 2x 4+4-pin / 2x 6+2-pin / 8x SATA, modular cable management, ATX-2.4 standard
    113,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEST-198
    (0)
    Redundant power supply, 600 + 600 watt power, 24/7 operation, hot-swappable, PS/2 mini form factor, Cybenetics Silver certification
    699,90 €
    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.