I just bought a second Radeon HD4830. I had a Sapphire one before, now I bought a XFX. I have done everything I can do to get it working, but it's not working! Firstly, I got a motherboard that supports crossfire (Asrock A770CROSSFIRE), got 2 cards, and got a crossfire bridge(tried 2 diffrent ones). I have tried both old and new drivers, installed them while using one card at a time etcetc. I have tried to flash the gpu bios to match, still cant get the Crossfire tab in Calatlyst to show. In GPU-Z I can find both my cards, in catalyst I can find both cards, but the second card is "Disabled Adapter" and is locked at PCI 1x. Any tips? Have been trying to fix this for a week now, still cant get it to work!
More about : crossfire tab catalyst
My bad, it should be ASROCK A770crossfire, sorry
ASRock has been using that chip since their XPRESS 1600 days (the early days of AM2/ late days of 939). It allows them to force two 8x lanes on a chipset that would otherwise only have a single 16x lane, ie the 770 and 780/785G. I've also seen this on one or two of their 790GX boards, but I think that's simply a cost saving measure so they can use the designs they already made for the 780/785G.
I read http://www.tech-forums.net/pc/f76/will-my-psu-handle-cr... and they think 380W PSU should be enougt, I got 600 W and its not enought? Thats weird!