Antec GSK1200 ATX 3.1 Power Supply, 1200W, 80 Plus Gold, Full Modular, Dual PCIe 5.1 12V-2x6, 10-Year Warranty

Two GPUs, or one card that eats 350W on its own — your PSU needs real headroom, not a barely-passing spec sheet. The GSK1200 puts 1200W of ATX 3.1 power behind two native PCIe 5.1 12V-2x6 connectors, so both cards get clean, dedicated power with no adapter in the chain. Full modular, 80 Plus Gold efficiency, and a 10-year warranty that outlasts the build cycle by a few generations.

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• 1200W ATX 12V 3.1 output with two native PCIe 5.1 12V-2x6 GPU connectors
• Full modular cabling: 9× SATA, 4× Molex, 2× 8-pin CPU, 5× PCIe 8(6+2)
• 80 Plus Gold certified with active PFC for efficient power delivery
• 120mm FDB silent fan for low-noise operation in sustained loads
• CircuitShield protection suite: OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO
• 10-year warranty