Sources at motherboard makers claim AMD's upcoming RS780 will perform up to 15-20% better than the NVIDIA MCP78S chipset in 3DMark05 and 06 benchmarks. NVIDIA's MCP78U will perform better but that chipset is having troubles with high power usage.
The RS780 is reported to have 15-20% better performance than the MCP 78S in 3DMark 05 and 06 tests, while the higher-end MCP 78U cannot function normally with the original passive northbridge heatpipe due to the higher core frequencies of the graphics engine. Adopting a larger heatpipe or fan will cause costs to rise significantly, pointed out the sources. Nvidia is still struggling with the problem, they added.
Additionally, motherboard makers have not yet taken delivery of MCP 78 chipset supplies, which means that the original launch schedule of motherboards might have to be postponed back to the end of January or beginning of February, noted the sources.
On the other hand, motherboard makers have already finished preparations for their RS780 motherboard launches and will be ready to ship in January 23 next year.
Both chipsets will be launched in the first quarter of 2008.