I have the same stuff, on an IC7-G... Running the ram at 2-2-2-5 @ 224mhz 2.8v , I can get up near 3.4ghz, with Street Racer GAT settings. Anything past 224mhz results in random restarts, and memory errors in memtest. Maybe if I relaxed the timings\GAT I could go higher?
Nevertheless, I don't do anything that requires even 1ghz of computing power, so getting 3.6ghz is just pointless endangering of my precious rig.