ATI 4850/4870 voltmod thread

[dejanh]

I tried to do the pencil mod on my VMEM on the 4870 but one of the resistors simply will not pencil in...any tips on what I can do? The first one dropped from 220ohm to 143ohm after pencil mod, but the second no matter how much I pencil stays at 220ohm.

Also, I tried and confirmed that a BIOS vmod on the 4870 does not work. This also includes the XOC BE version of the 4870.

Currently running my 4870 XOC BE at 870/1200 on stock volts in Vista Noticed however that C2D combined with this card gives about 20% - 25% better performance over my 5000+ BE X2 @ 3.2GHz. Kind of an ouch :s