Legit Reviews posted a review on the DFI RDX200 CF-DR Cross-Fire Motherboard
Dropping the memory divider to 166 and the CPU multiplier to x8 allowed me to push the board all the way to 309FSB, not too shabby at all. One issue I'd like to point out is the heat generated by the chipsets. Once I got past 300FSB the ATI Radeon Xpress 200 NB chipset was idling at 49C and peaked at 58C during my testing....The DFI RDX200 CF-DR Cross-Fire Motherboard Review