Upon further inspections i noticed that my card is throttling , HEAVILY while i have my powe limit above -45%.
I ran a test on Serious Sam 3, with the power limit set to -48% the core clock remained at a steady 975ish MHZ, when i set my power limit to 0% (default), the clock boosted to around 1200mhz (as it should) but it started throttling like CRAZY, being at 1250~MHZ and in the next frame dropping to 550mhz then going back to 1250mhz.
Now, i don't know what could be causing this, i don't know if this is software or hardware related anymore, My temps are very cool, never going passed 62c under load.
I have a quality PSU as well.
Any light on this subject?
What would be the correct amount of watts the card should be pulling while operating normally at it's default clocks?
I fear the power delivery system on this card is actually dying.
1 of 1 people found this helpful
*EDIT 2, PROBLEM HAS BEEN FIXED!
Following my suspicion of power delivery issues i took some time to study the PCB of this card, knowing where the power delivery system was i carefully took the card apart.
With a toothbrush and isopropyl alcohol i gently scrubbed all the mosfets in the power delivery system, i left the card drying for about 30 minutes and re-assembled it.
What do you know? IT WORKED, the card is now pulling the voltage needed to run at it's default boost clocks again, no more stutter or crashing.
So, if your rx480 is throttling and not pulling enough power to boost, try cleaning your pcb with isopropyl alcohol
I've had the same problem with my MSI RX480 4gb and another solution to the stutter is to go back to driver version 16.12.1 or 17.1.2.
I tried 18.3.3 as well, but as you can see from Wattman after running Witcher 3 at high settings the GPU usage jumps all over the place, contributing to a stutter every second or so.