Amd 760g ram support?

[Absolutely]

How high of ghz ram is supported by this motherboard?

 

[damric]

That depends on the CPU that is used, as the CPU contains the memory controller on that platform. For an AM3 CPU, the maximum rated is 1333MT/s, and for an AM3+ CPU, the maximum rated is 1866 MT/s. Often you can go faster but that is considered overclocking for that platform and not guaranteed to work.