For their first effort at an AMD Athlon 64 chipset, we can only say we are beyond impressed with the ATI RX480/RS480 chipset. No matter how we compare the performance the ATI RX480 is competitive or a bit faster than the best Socket 939 boards we have tested at AnandTech.
It is also worth noting that ATI specified that the x16 PCIe graphics slot can be programmed "to drive two devices". ATI shared plans to market their own SLI solution that they expect to launch in early 2005, so SLI will also likely be a choice with ATI in the near future.
We have no hesitation in recommending ATI Radeon Express as either a discrete or integrated solution for a top-line Athlon 64 system. The ATI will not disappoint in either stock performance, features, or overclocking capabilities that top the Athlon 64 pack.