At one point in my PC building past I ran into a problem seating a higher end video card into a lower end mother board due to a capacitor overlap or some such. The thing simply would not fit and I had to settle for a lesser card.
This concerns me currently as I'm finally due for an upgrade. Anyone know if I'll run into problems?
If there's a superior mobo without increasing the price too much (50% is too much) then I'm open to suggestions.
I think this used to be a problem quite awhile ago. You should be safe. There are some caps near the PCIe slot, but they are lower then the sink on the MCH(? the old southbridge, whatever intel calls that now.) All the cards you listed have a shroud on them, so they are the same height across the board. Which to get depends on your screen resolution and budget.
You should be fine as far as the motherboard goes but depending on your case a card like the 5870 with it being almost 11" long can be a problem.
The only interference problems I have seen with regards to video cards and motherboards is some have the Ram slots so close that to operate the retaining latches the card has to be removed, even tho with the way the one you picked is setup that is not a problem.
The MB shouldn't cause any problems. It has been years since I have seen actual problems with clearance issues other than a tight fit to ram slots and some multi card setups with sata connectors (reason why many have them horizontal) with cables attached which could be a problem on that board if you got a second card. Really the main problems with the fitting of video cards now is mostly length related.