I think that focusing more airflow toward the ram would increase performance b/c they have limited cooling. That would do more than adding an extra intake. Remember that you want to take out more than you put in and that at minimum you should take in as much as you put out. If you were to spend any actual money though I would upgrade you cpu heat sink. Also if you wanted to really OC your gpu I would recommend upgrading all your fans to higher output ones first. My setup has a 22% gpu OC and a 17% memory OC all with stock heatsink and only air cooling on it.