PSU: Corsair RM860XIn general the Power Limit tells the driver the maximum power the card can draw before throttling back. Usually there are two competing limits, TDP (power) and temperature (though in a practical sense they are two sides to the same coin). So for a simple example (picking number out of the air) lets say at 100% the card is allowed to draw 100W before throttling. If you move the slider to 125%, then you are telling the driver that it can pull 125W before downclocking.
As for whether your PSU has enough headroom to accomplish this, that depends on the rest of the system. If you are already close to the limit of your supply and / or you have a low quality supply, then the answer may be no. Which PSU do you have ?
Rest of your PC specs ?
Also, what does throttle down? The core frequency?In general the Power Limit tells the driver the maximum power the card can draw before throttling back. Usually there are two competing limits, TDP (power) and temperature (though in a practical sense they are two sides to the same coin). So for a simple example (picking number out of the air) lets say at 100% the card is allowed to draw 100W before throttling. If you move the slider to 125%, then you are telling the driver that it can pull 125W before downclocking.
As for whether your PSU has enough headroom to accomplish this, that depends on the rest of the system. If you are already close to the limit of your supply and / or you have a low quality supply, then the answer may be no. Which PSU do you have ?
Rest of your PC specs ?
Also, what does throttle down? The core frequency?