The 295 was never going to be slower than 4870X2 at no point. Have had one to use since Tuesday its a potent card and drivers are solid
We will have to see what the 40nm RV8XX update in its X2 guise brings...
BTW performance has nothing to do with inter core communications. Stream processors in NVIDIA GPUs are just far more efficient and NV has more texture units...
Real killer from NVIDIA is Q3 2009, GT212 as that's 384 stream processors, 40nm GPU and 96 texture units... Powered through a 256-bit GDDR5 interface at very high speed. That VGA will be faster than GTX295