I want to to overclock my g4 ti 4200 with coolbits.

I know i should raise the core clock 5 at a time, but what about the memory clock?

Should I increase the memory clock 10 mHz for every 5 mHz core clock increase?

I move them up together (5 for clk, 10 for mem) until I get instability. Then I lower them both a notch and try to raise each one separately.

Or you can raise only one at a time, keeping the other at default, to find where each has its own limit. Then raise both to just below those numbers to find their combined limit.

Then I normally back off a little from the max in order to not push my luck. Running a component right on the edge of stability makes it more likely to fail in 6-12 months then running it a little below that. Besides, you can't tell the difference between 10000 3dmarks and 9700 3dmarks except by using 3dmark.

I have a PNY G4 Ti 4200 and can run a 3dmark bench at 300 core and 600 memory. I don't run it at that speed all the time. Just for benchmarking. My stock core is 250 and 500 memory. Goodluck.