why did you chose those clocks?
similar to this
http://www.techpowerup.com/reviews/N...60_SLI/25.html

a 5970 is around 10% faster on average...
and thats about the boost i expect from enabling the 8th block of shaders on gf104...
so the 495 should really be able to compete with the 5970... but i wonder how they hold up against the overclocked editions of 5970, as those clock a lot higher and 460s only reach around 900mhz...