I never really knew much about GFX mem and never seen anything about it when I look up other GFX overclock tutorials or guides. Some people have said that it doesn't actually do anything. other people increase the slider to like +1000 O.o that seems like a lot...
PC vs Mac? A Mac IS a Personal Computer! Don't tell me "It's a distinction that has existed for about 20+ years. PC refers to x86 + Windows and then you have Mac and Linux." Unless you still believe earth is flat.
Memory overclocking is easy and the way you tell you have hit your max is:
Black/Grey triangles on the screen or disco green lights flashing.
Like Xiphos said, use Precision X or MSI Afterburner.
Memory overclocks do help, especially at higher resolutions with higher AA in games. The 680 struggled to keep up with the 7970 the higher the resolution because of the 256bit (192GB/s) Vs 384bit (264GB/s).
Yeah I knew how to physically do it I just thought there was more to it other than moving that slider up haha. Was really asking about how to judge how much I could go on the clock and how to tell if its unstable or anything, thanks for all the help!