To make a long story short, yes you can run DDR500. It will run at ddr400 until you set the timings, voltages, and then overclock the bus speed.
“What the hell did you expect? Leave Vista under the pillow and the OS fairy would make it Win7?” -El Fiendo
“And Bring Mailman back god damnit, he is the Eric Cartman of TPU” -MRCL