I'm building a new box and am only going with 1 vid card (XFX 4890). Does it really matter which of the 2 PCI slots I put it in? I've got an ASUS M479XTD EVO board and the manual doesn't say much. I seem to remember seeing somewhere that if you only have one, it's best to put it in the slot labeled as 1 but why would that matter? It's mostly a curiosity thing and I have room to use either but the question nags me.

Thanks