Quote Originally Posted by acos View Post
Lets hope this is the reason. my powercolor 4770 is at 800 and cannot go up or even down. not even by 1MHz !!!!
i will try on win7 but i am waiting for 9.5 drivers.
so it is confirmed! In win7 64b and latest 9.4 drivers the card can be easily OC 850/830
yes the memory cannot go far, but it's ok. Thus it was a matter of drivers i guess. Better drivers better OC