thekaspy :
volcanoscout :
It'll work fine as long as you've got good airflow through your case. You may want to flip your PSU so it's fan down if your case is set up for it - that way the lower GPU and the PSU won't be competing for the same air, and your PSU will be able to draw cool air from outside the case.
Looks like this
http://i.imgur.com/BRx4SiY.jpg
(yeah I know poor cable management)
Yeah, that's tight. You definitely want to flip that PSU if at all possible. . What case is that? How many of what kind of fans do you have, and in what configuration? Usually it's the top card that you have to worry about getting air to, but in your case both cards are going to need some special attention.
Edit: Might save some time if you just give us all of your build specs, i.e. CPU, CPU cooler, mobo, case, fans and fan config, number and type of drives, etc.