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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
    NECS-173
    (1)
    80-Plus-Bronze power supply, 750 watts continuous power, 4x 6+2-pin PCIe & 8x SATA, ATX 2.4 standard
    72,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NECS-164
    (0)
    Semi-passive 80-Plus-Gold power supply, 750 watts continuous power, 1x 12+4-pin 12VHPWR PCIe 5.0, 3x 6+2-pin PCIe, 7x SATA, ATX 3.0 standard
    124,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NECS-187
    (0)
    Fully modular 80-PLUS Platinum power supply, 1,200 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.
    239,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NECS-184
    (1)
    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
    Out of Stock
    NECS-183
    (0)
    Fully modular 80 Plus Gold power supply, 650 watts continuous power, ATX 3.1 standard with PCIe 5.1 support, zero RPM fan mode, Cybenetics Gold certified, 12V 2x6 GPU cable included
    81,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NECS-185
    (0)
    Fully modular 80 Plus Gold power supply, 850 watts continuous power, ATX 3.1 standard with PCIe 5.1 support, Zero RPM fan mode, Cybenetics Gold certified, 12V 2x6 GPU cable included
    119,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NECS-180
    (0)
    Highly efficient SFX power supply with PCIe 5.1, ATX 3.1, 850 watts, with 80 PLUS Platinum and Cybenetics Platinum, fully modular cable management, including 12V-2x6 cable for graphics cards.
    209,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NECS-181
    (0)
    Highly efficient SFX power supply with PCIe 5.1, ATX 3.1, 750 watts, featuring 80 PLUS Platinum and Cybenetics Platinum, fully modular cable management, including 12V-2x6 cable for graphics cards.
    189,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NECS-179
    (1)
    High-efficiency SFX power supply with PCIe 5.1, ATX 3.1, 1,000 watts with 80 PLUS Platinum and Cybenetics Platinum, fully modular cable management, including 12V-2x6 cable for graphics cards
    219,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEKL-050
    (1)
    Premium 80 PLUS Gold power supply rated for 1,200 Watts output, Fully modular cable management, One 12VHPWR 12+4-pin & four 6+2-Pin PCIe connectors, 2x 4+4-pin CPU & 8x SATA, ATX 3.0 standard
    159,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEMS-003
    (6)
    Powerful power supply with PCIe 5.0, with 80 PLUS Gold, 850 watt power, modular cable management, 6x 6+2-pin connectors for graphics cards, with 12+4-pin PCIe 5.0 12VHPWR connector for high-end graphics cards
    133,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEMS-007
    (1)
    650-watt power supply from MSI, 80 PLUS Gold efficiency, strong 12V rail, two PCIe connectors, noise-optimized fan
    90,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEMS-014
    (0)
    550-watt power supply from MSI, 80 PLUS Bronze efficiency, strong 12V rail, two PCIe connectors, noise-optimized fan
    58,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEMS-001
    (3)
    High-performance power supply with PCIe 5.0, with 80 PLUS Platinum, 1,300 watts of power, modular cable management, 8x 12+4-pin connectors for graphics cards, with 12+4-pin PCIe 5.0 12VHPWR connector for high-end graphics cards.
    328,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEMS-005
    (0)
    850-watt power supply from MSI, 80 PLUS Gold efficiency, strong 12V rail, four PCIe connectors, noise-optimised fan, PCI 5.0
    122,88 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEMS-006
    (0)
    750-watt power supply from MSI, 80 PLUS Gold efficiency, strong 12V rail, two PCIe connectors, noise-optimized fan, PCI 5.0
    104,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEMS-004
    (0)
    850-watt power supply from MSI, 80 PLUS Gold efficiency, strong 12V rail, four PCIe connectors, noise-optimized fan, PCI 5.0
    123,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEMS-015
    (0)
    80 PLUS Gold power supply, 750 watts continuous power, non-modular, PCIe 5.1, ATX 3.1 standard
    109,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEPY-002
    (1)
    External 12 V power supply, 70 W continuous power, adapter for USA/UK included.
    39,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    ZUBR-042
    (0)
    White 5-way power strip from InLine with switch, child safety lock and 1.5m long connection cable
    9,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NESE-172
    (4)
    High-performance ATX 3.1 power supply from Seasonic, with 80 PLUS Titanium, 1,300 watts of power, modular cable management, 6x 6+2-pin PCIe connectors, 1x 12+4 PCIe 5.1 connector
    399,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NESE-167
    (1)
    High-performance ATX 3.1 power supply from Seasonic, with 80 PLUS Titanium, 1,600 watts of power, modular cable management, 6x 6+2-pin PCIe connectors, 2x 12+4 PCIe 5.1 connectors
    549,90 €
    Incl. VAT, add. delivery costs
    Out of 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
    Out of Stock
    NEST-223
    (0)
    ATX 3.1 power supply with 2,500 watts total output, designed for high-end and enthusiast builds, fully modular design, various protection circuits, 135 mm FDB fan, four 12V 2x6 connectors, relatively compact design with 200 mm depth
    694,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEST-127
    (0)
    Compact SFX power supply (300 watts) from SilverStone, for gaming PCs: 25 A on 12 V and 1x PCIe power, improved version 2.0 with enhanced protection circuits, quiet 92 mm fan with optimized fan curve, 80 PLUS Bronze efficiency with up to 85% efficiency.
    59,90 €
    Incl. VAT, add. delivery costs
    Out of 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
    Out of Stock
    NEST-177
    (2)
    Super compact Flex-ATX power supply, with 600 watts of power, 80 PLUS Platinum certified, strong 12V single rail with 50 amperes, 2x 6+2-pin PCIe / 4x SATA / 3x Molex
    164,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEST-205
    (0)
    Practical installation cover in white for the use of SFX power supplies instead of ATX power supplies.
    6,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NEST-222
    (0)
    2HE-compatible design, 1300 watt power, redundancy-oriented structure, compact design
    1.149,00 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NESC-006
    (4)
    Fanless 240-watts power supply for FC5 Evo, FC9, and FC10 cases from Streacom with 2x SATA, Flex-ATX form factor
    164,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NESE-150
    (0)
    Compact SFX power supply with 750 W, 80 PLUS Platinum efficiency, strong single rail with 62 A, fully modular cable management, four PCIe connectors, 92 mm fan with 3 phases
    184,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NESE-168
    (1)
    High-performance ATX 3.0 power supply from Seasonic, with 80 PLUS Platinum, 1,600 watts of power, modular cable management, 6x 6+2-pin PCIe connectors, 2x 12+4 PCIe 5.0 connectors
    379,90 €
    Incl. VAT, add. delivery costs
    Out of Stock
    NELI-022
    (6)
    Powerful 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
    Out of 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.