Unless you can replace the power supply with a more suitable one you will need to limit the amount of power to the graphics card via an app called msi afterburner so that the graphics card runs slower.
Gpu power supply requirements.
Many present graphics cards include a combination of six pin 75w or eight pin 150w connectors since the remainder of the graphics card s tdp thus needs to come from its 6 pin or 8 pin pci e connectors.
Guide on finding the right power supply for your graphics card.
It ll be either 6 8 6 6 6 8 or 8 8 pins and that s per gpu.
Considering the power requirements of other pc components like cpu and other parts a pc build with the rtx 3090 gpu should have at least a 1200w psu else one might face performance bottleneck.
Graphics processing unit gpu you will need to account for the actual power draw and the number of additional power pins a gpu may have.
Graphics card is one of the most power hungry components for any computer whether gaming pc or a work pc.
Power supply requirements for desktop pcs.
Although power supplies are increasing their power too the bottleneck is due to the pci express connection.
This will prevent the pc from restarting in most cases.
In contrast mid range and higher end gpus need significantly more power to.