I am finally going to do my upgrade on this board. Right now I am stuck with my ram at 800mhz because I only have an am2 cpu and not an am2+ cpu. I am going to get a phenom soon though so that should fix that. However the user manual states "DDR2 1066 MHz is supported by AM2+ CPU for one DIMM per channel only."

Does this mean I can't fill all the memory slots up and have them run at 1066mhz?

Also I only a thermalright xp-90 for a heatsink. Is that going to be too small for an x3 or x4 phenom?