LOL, I also used my 2x512MB Ballistix kits on one of my Expert. It is proven to hit about 280+MHz (1:1 no divider) on DFI Expert when properly tuned and cooled - the Ballistix heatspreaders can get scorching hot which hinders it's overclockability so you might want to set up a fan blowing on to the pair. I've found that it stabilizes the memory quite effectively.