i dont understand how u gets get 64 TMU, when most sites says 32 ...

http://www.digit-life.com/articles2/...g80-part1.html
NVIDIA GeForce 8800 GTX - 768MB GDDR3, 575/1350/1800 MHz, 128 unified processors/32 TMUs/24 ROPs - $599;
http://www.xbitlabs.com/articles/vid.../gb8800_5.html
So, the G80 contains a total of 32 TMUs each of which is designed like follows:
and wiki
http://en.wikipedia.org/wiki/Compari...ocessing_Units

i dunno maybe u multiply by 2 b/c it has larger bus?? anyone?

and yeah if G80 has twice the TMU, then at lower clock speed 575 , it should outperform R600's 32TMU @ 730, besides it has 24 ROP vs R600's 16 ROP ...