Normal
The PSU fan is likely to intake more than from (edited) the warmed air (passed through the front rad-fan) and exhaust from an cooled display card (exhausting along the top and bottom edges). This, of course, is not preferred. Even though I do not think this will trigger the thermal protection of the PSU, I think its fan will spin faster (and more noisy or less quiet).Example layout:-[MEDIA=imgur]a/i1sDLBQ[/MEDIA]
The PSU fan is likely to intake more than from (edited) the warmed air (passed through the front rad-fan) and exhaust from an cooled display card (exhausting along the top and bottom edges). This, of course, is not preferred. Even though I do not think this will trigger the thermal protection of the PSU, I think its fan will spin faster (and more noisy or less quiet).
Example layout:-
[MEDIA=imgur]a/i1sDLBQ[/MEDIA]