Toughpower GF A3 Gold series comes with a 16pin connector to offer powerful and stable performance allowing the PSU to natively run next-generation GPUs. The wattage marked on the 12VHPWR's connector is the recommended wattage. (Ref. Intel design guideline) The native 16 PIN (12VHPWR) PCIe connector of the GF A3 850W can deliver up to 450W for PCIe 5.0 graphics cards. Note: 1. Recommended wattage is an estimation of system power demand. Actual power demands may vary based on specific components, usage, and many other factors. 2. Please follow the recommended power requirements from the GPU manufactures before using the 12VHPWR cable.