The 165 is 200MHZ slower than the 3800+x2, but it has double the cache. You could overclock it a simple 200mhz, you could do that on stock cooling and stock voltage, and it would be as fast as the 3800+ with double the cache. Of course it overclocks faster the 3800+, I have one, and mine is at 2.8GHz on air cooling. That's faster than the FX-60.
so, umm, err yeah