Hello all trying to find a answer and this seems to have the best compilation of data and answers on the new 7870 Tahiti boards. I just bought a PowerColor 7870 Tahiti LE (EZ I think it's referred as) http://www.newegg.com/Product/Product.aspx?Item=N82E16814131487
and installed it a couple days ago. It was a fresh build and everything seemed to be fine after I installed the 13.1 drivers. Ran GW2 and SWTOR great at max settings. Ran a 3d Mark 11 score and it placed right where it should. Went to OC it and thats when I noticed some weird behavior.
Just thought I would see if anyone has any ideas in a fix before I return it to newegg. The problem I am having is that the card is constantly jumping down to a 925Mhz core clock when ever it comes under load. Sometimes its a back and forth jump to and from the core clock I have set and sometimes it just runs at the 925MHz constant. I have tried ati drivers 13.1, 13.2 beta and 13.3 beta and none of them work any better or worse. I have tried using MSI afterburner, the CCC overdrive and the powercolor utility to set the speeds and all result in the same result. Have tried the card in 2 different systems with two different power supplies and it runs the same in both systems. I have turned up the power limit from 1% to 20% and that didn't change anything. Also have tried increasing the voltage via powercolors utility with no luck either. Temps on the card have never gone over 68 C. I haven't tried a bios update on the card, not sure were to find one since the card isn't listed on powercolor's website.
Any advice would be greatly appreciated!!!