Regarding SSE2, I still expect Core 2 to have edge over the K10, as it has a higher peak theoretical throughput..

Core 2 can issue a max of 6 SSE instructions per cycle, while the K10 can do 3.

Ofocurse, there are other factors involved other than peak SIMD throughput, like latency and memory bandwidth, and the K10 will have the edge there.

But not enough to trounce C2D IMO.

As for INT, C2D should still maintain a healthy lead as the C2D is a beast in INT. It will be interesting to see which processor holds the performance crown for gaming, as games tend to be far more INT based than FP.