Hello, I have recently upgraded my video card from a radeon 4850, to a radeon 4870x2, and Im only seeing minimal improvements. It seems no games are using both cores at any meaningful frequency (sporadically the second core will see a jump off of zero load). 3Dmark vantages first two tests, and the flag test, have brutal artifacts and distortions in them with no increase in FPS, however the other graphical tests like pixel and shader fillrate are phenomenal compared to the 4850.
The 4870x2 is brand new OEM.
I should have not assumed my mobo could handle a dual GPU card, but I did, and now Im wondering if I was incorrect to assume that. The Asus M3A78 pro says it supports "hybrid crossfireX", and only has one PCIE 16x slot. Now Im reading that dual GPU cards essentially are a crossfire, just on the same board, and Im not sure this board can handle it now. Emailed Asus but they have yet to respond.
So am I doomed to upgrade my mobo now, and CPU and RAM along with it? I was trying to avoid all that, really, as money is tight and I just wanted a stronger vid card.