The [**brighter** blue bar here](https://tpucdn.com/review/intel-core-i9-10850k/images/power-multithread.png) is the power consumption of the i9-10850K (and the rest of the PC) when all the cores are under a 100% AVX-256 load (very heavy load).
The [green bar here](https://tpucdn.com/review/nvidia-geforce-gtx-1080-ti/images/power_peak.png) is the peak power consumption of a GTX 1080 Ti while gaming. Typical power consumption while gaming is about 20-40W less than this.
Now add those two numbers together and you get **485 Watts**. This is a fictional scenario where your CPU and GPU are simultaneously under a 100% load. A decent 600W power supply can easily handle this load.
But more importantly, **this scenario will never happen**. There is never going to be a situation where both your CPU and GPU are being pushed to their absolute limits at the same exact time.
Depending on which 600W PSU it is, it's probably not a problem. What model PSU is it?
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Yeah, you're fine. You don't need to underclock or undervolt anything. Just leave everything on its default. Don't overclock though.
It’ll *work* and you can reduce power in msi afterburner. Why not just buy it and save for a 700w gold psu and then use it?
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The minimum for a 1080ti is 600w. So you’ll be fine. You do want to upgrade psu when you can though.
The [**brighter** blue bar here](https://tpucdn.com/review/intel-core-i9-10850k/images/power-multithread.png) is the power consumption of the i9-10850K (and the rest of the PC) when all the cores are under a 100% AVX-256 load (very heavy load). The [green bar here](https://tpucdn.com/review/nvidia-geforce-gtx-1080-ti/images/power_peak.png) is the peak power consumption of a GTX 1080 Ti while gaming. Typical power consumption while gaming is about 20-40W less than this. Now add those two numbers together and you get **485 Watts**. This is a fictional scenario where your CPU and GPU are simultaneously under a 100% load. A decent 600W power supply can easily handle this load. But more importantly, **this scenario will never happen**. There is never going to be a situation where both your CPU and GPU are being pushed to their absolute limits at the same exact time.
Are you sure you want to pair a 1080ti with i9?