Quote Originally Posted by zanzabar View Post
what do u mean, ive tried like 5 4890 reference and they all did 1GHZ, i can even put mine over 1075 but then im short on cooling (hex core and a 4890 on 1 pa120.2 while running 1k rpm or so fans is limiting). the only ati overclocking problem ive seen is that people equate the reference overlocks as what all will do but sapphire and xfx like to put out their POS cards and people dont notice that they are non reference and cannot change the voltage.


i had figured that with some voltage it would clock up to about 1ghz like the gf100 would, but this should be doable on air
How do you people deal with the VRMs on those cards? A fullcover block? I'm afraid to touch the core voltage on my 280 due to the heat from the vrms. If I'm not mistaken the 280 also has even more vrms for the core than the 4890.