Modding side panels fans - which way?

Ive just put togethor a new rig coolermaster 922. Im wanting to fit two side panel fans (2 @120mm). Behind these are 9800GT SLI gpu's. Should the fans intake air or expel air?

 

i would say intake, blow air over the gpu's and the gpu fan wont have to work so hard

 

It all depends on how you want your airflow to go, either suck the hot air out of the case or draw cool air in over the graphics cards and expel it somewhere else.

 

If your cards are single slot coolers, the air blown over them won't have anywhere to go. It'll just heat up, could cause problems, you could put one as an intake, one as an exhaust...