Frequency
Frequency
It doesn't matter which GPU you're using, MSI AfterBurner typically allows adjusting Core clock (MHz)/voltage (mV), Memory clock (MHz)/voltage (mV), and Power Limit (card draws more power).
How many megahertz each time you check until it becomes unstable at the core clock and memory clock plus 100 at memory, with an additional 40 each time you test?
I've watched a video showing him doing over 40 on Core clock each test to check for instability, and more than 100 on memory clock each test to see if it becomes unstable. Maybe I'll try it when I get home.