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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.
    243 Results
    new
    NECO-003
    (0)
    Cooler Master ATX 3.1 power supply, 850 watts output with 80 PLUS Gold, non-modular cable management, 1x12V-2x6 for high-end GPUs
    75,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 16.10.2026
    new
    NELI-068
    (0)
    Fully modular 1,200-watt power supply in white, Platinum ratings from 80 PLUS, CYBERNETICS, and PPLP.INFO, L-shaped design, including EDGE Hub V2
    179,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 02.12.2026
    new
    NELI-066
    (0)
    Fully modular 1,350-watt power supply in white, 80 PLUS Platinum ratings, CYBERNETICS and PPLP.INFO certified, including EDGE Hub ADV with monitoring of compatible 12V 2x6 power cables
    259,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 02.12.2026
    new
    NEAS-046
    (0)
    750 watts power with 80 PLUS Bronze, 135 mm Axial-Tech fan for quiet operation, 4x PCIe 6+2-pin connectors for graphics cards, sleeved cables for a clean build, 6 years manufacturer warranty
    79,90 €
    Incl. VAT, add. delivery costs
    In Stock
    new
    NELI-070
    (0)
    Fully modular 1,000-watt power supply in white, Platinum ratings from 80 PLUS, CYBERNETICS, and PPLP.INFO, L-shaped design, including EDGE Hub V2
    164,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 02.12.2026
    new
    NECS-195
    (0)
    Corsair ATX 3.1 power supply, 850 watts with 80 PLUS Gold certification, modular cable management, 1x12V-2x6 for high-end GPUs, Thermal Protect cables for monitoring cable temperatures
    139,90 €
    Incl. VAT, add. delivery costs
    In Stock
    new
    NELI-072
    (0)
    Fully modular 1,000-watt power supply in white, 80 PLUS Gold ratings from CYBERNETICS and PPLP.INFO, L-shaped design, including EDGE Hub V2 for USB devices and PWM fan
    139,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 02.12.2026
    new
    NEBE-270
    (0)
    High-end ATX 3.1 power supply from be quiet!, 1,300 watts output with 80 PLUS Titanium, modular cable management, 2x 12V-2x6 for high-end GPUs, 135 mm fan with semi-passive mode
    399,90 €
    Incl. VAT, add. delivery costs
    In Stock
    new
    NEBE-271
    (0)
    1,600 W power for high-end systems, 80 PLUS Titanium for high efficiency, 2x 12V-2x6 for modern graphics cards, fully modular cable management for tidiness, 135 mm fan for quiet cooling
    429,90 €
    Incl. VAT, add. delivery costs
    In Stock
    new
    NECS-194
    (0)
    Corsair ATX 3.1 power supply, 1,000 watts output with 80 PLUS Platinum, modular cable management, 1x12V-2x6 for high-end GPUs, Thermal Protect cable with temperature monitoring
    174,90 €
    Incl. VAT, add. delivery costs
    In Stock
    new
    NECS-196
    (0)
    Corsair ATX 3.1 power supply, 1,000 watts output with 80 PLUS Platinum, modular cable management, 1x12V-2x6 for high-end GPUs, Thermal Protect cable with temperature monitoring
    174,90 €
    Incl. VAT, add. delivery costs
    In Stock
    new
    NECS-193
    (0)
    Corsair ATX 3.1 power supply, 850 watts with 80 PLUS Gold, modular cable management, 1x12V-2x6 for high-end GPUs, Thermal Protect cables for monitoring cable temperatures
    139,90 €
    Incl. VAT, add. delivery costs
    In Stock
    new
    NELI-069
    (0)
    Fully modular 1,000-watt power supply in black, 80 PLUS Platinum ratings from CYBERNETICS and PPLP.INFO, L-shaped design, including EDGE Hub V2
    164,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 02.12.2026
    new
    NELI-073
    (0)
    Fully modular 850-watt power supply in black, 80 PLUS Gold ratings from CYBERNETICS and PPLP.INFO, L-shaped design, including EDGE Hub V2 for USB devices and PWM fan
    99,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 02.12.2026
    new
    NELI-071
    (0)
    Fully modular 1,000-watt power supply in black, 80 PLUS Gold ratings from CYBERNETICS and PPLP.INFO, L-shaped design, including EDGE Hub V2 for USB devices and PWM fan
    139,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 02.12.2026
    Top Seller
    NEBE-252
    (1)
    High-efficiency ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Platinum, 1,000 watts rated power, 140mm fan, fully modular
    169,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 32% Top Seller
    NELI-034
    (1)
    Powerful 1,000-watt power supply, with a rotatable AC connector, 80 PLUS Gold efficiency, dual 24-pin connectors, quiet 135mm fan
    Price reduced from 139,90 € to 94,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEBE-254
    (2)
    Highly efficient ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Platinum, 750 watts nominal power, 140mm fan, fully modular.
    129,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 32%
    NELI-033
    (0)
    Powerful 1,000-watt power supply, with a rotatable AC connector, 80 PLUS Gold efficiency, dual 24-pin connectors, quiet 135mm fan, and convenient RS USB hub.
    Price reduced from 149,90 € to 100,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 33%
    NELI-032
    (0)
    Powerful 1,000-watt power supply with a rotatable AC connector, 80 PLUS Gold efficiency, dual 24-pin connectors, quiet 135 mm fan, and convenient RS USB hub.
    Price reduced from 149,90 € to 99,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 21%
    NEBE-263
    (1)
    80 PLUS Gold power supply, 1,000 watt continuous power, modular, PCIe 5.1 & ATX 3.1
    Price reduced from 164,90 € to 129,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 21.10.2026
    NELI-021
    (9)
    High-performance ATX 3.1 power supply with 1,000 watts, L-shaped design for dual-chamber cases, detachable USB and PWM fan hub, energy-efficient gold certification, individually sleeved connection cables, fully modular cable management
    154,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 19%
    NEBE-249
    (0)
    Very efficient ATX-3.1 power supply, supports PCIe 5.1, 80 PLUS Gold, 750 watts rated power, 120mm fan, non-modular
    Price reduced from 104,90 € to 84,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 17%
    NEBE-233
    (3)
    High-end ATX 3.1 power supply with 1,600 watts, highest efficiency with 80 PLUS Titanium, 280 A total power (12 V), single or multi-rail operation, quiet Silent-Wings fan, fully modular cable management, black aluminium housing
    Price reduced from 424,00 € to 349,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 34%
    NELI-030
    (1)
    Powerful 1,200-watt power supply with a rotatable AC connector, 80 PLUS Gold efficiency, dual 24-pin connectors, quiet 135mm fan, and convenient RS-USB hub
    Price reduced from 169,90 € to 110,90 €
    Incl. VAT, add. delivery costs
    In Stock
    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
    NECS-178
    (3)
    Fully modular 80 Plus Gold power supply, 1000 watts continuous power, ATX-3.1 standard with PCIe-5.1 support, Zero-RPM fan mode, Cybenetics Gold certified, 12V-2x6 GPU cable included
    169,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEPH-024
    (1)
    Powerful ATX-3.1 850 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
    109,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 44%
    NEBE-269
    (0)
    80 PLUS Gold power supply, 1,200 watts continuous output, modular, PCIe 5.1 & ATX 3.1
    Price reduced from 214,90 € to 119,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 21.10.2026
    NELI-020
    (3)
    Powerful ATX 3.1 power supply with 1,200 watts, L-shaped design for dual-chamber cases, detachable USB and PWM fan hub, energy-efficient gold certification, individually sleeved connection cables, fully modular cable management.
    179,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 28%
    NEBE-267
    (0)
    Highly efficient ATX 3.1 power supply, supports PCIe 5.1, 80 PLUS Platinum, 1,200 watts rated power, 140 mm fan, fully modular
    Price reduced from 209,90 € to 149,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 21.10.2026
    Save 23%
    NEBE-234
    (2)
    High-end ATX 3.1 power supply with 1,300 watts, highest efficiency with 80 PLUS Titanium, 260 A total power (12 V), single or multi-rail operation, quiet Silent-Wings fan, fully modular cable management, aluminium case in black.
    Price reduced from 389,90 € to 299,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 21.10.2026
    NELI-039
    (0)
    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
    Save 34%
    NELI-031
    (1)
    Powerful 1,200-watt power supply with a rotatable AC connector, 80 PLUS Gold efficiency, dual 24-pin connectors, quiet 135 mm fan, and convenient RS-USB hub
    Price reduced from 169,90 € to 111,90 €
    Incl. VAT, add. delivery costs
    In Stock
    Save 4%
    NEBE-264
    (0)
    80 PLUS Titanium efficiency, ATX 3.1 compliant, fully modular cable design, Silent Wings 135mm fan, PCIe 5.1, Japanese capacitors, ideal for high-end gaming PCs
    Price reduced from 262,90 € to 249,90 €
    Incl. VAT, add. delivery costs
    Pre Order Expected restock at 21.10.2026
    NECS-186
    (3)
    Fully modular 80 Plus Gold power supply, 1,000 watts continuous power, ATX 3.1 standard with PCIe 5.1 support, zero RPM fan mode, Cybenetics Gold certified, 12V 2x6 GPU cable included
    134,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-025
    (0)
    ATX 3.1 power supply with 750 watts, L-shaped design for dual-chamber cases, energy-efficient gold certification, individually sleeved connection cables, fully modular cable management
    99,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NECS-188
    (1)
    Fully modular 80-PLUS Platinum power supply, 1,500 watts continuous power, ATX-3.1 standard with PCIe-5.1 support, Zero-RPM fan mode, Cybenetics Platinum certified, 12V-2x6 GPU cable included, integrated USB-C port for monitoring via iCUE software
    299,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NELI-019
    (2)
    Powerful ATX-3.1 power supply with 1,200 watts, L-shaped design for dual-chamber cases, detachable USB and PWM fan hub, energy-efficient gold certification, individually sleeved connection cables, fully modular cable management
    179,90 €
    Incl. VAT, add. delivery costs
    In Stock
    NEPH-031
    (2)
    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

    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.