Most 4090 can be overclocked to nearly 3 Ghz by simply increasing the voltage limit to 1.1v and setting the max power limit to 600W (or 133%) if your card allows it. I was able to push mine to 3.06 Ghz, but at the expense of using nearly 565W at peak power draw and temps creeping up to the mid 70s. I’m not saying the 4090 is efficient at these upper power levels, but overclocking to nearly +300 Mhz on the GPU core is actually quite impressive.
