well the ASUS A8N32-SLI delux can only take as high as ddr400.
i'll probably put in an Athlon 64 x2 4200+. i doubt that has the venice core.
You can loosen the timings on the memory I posted and get some good OC out of it. But if you really want to push the envelope, look into PC3500 or PC4000 memory. :-)