Couple things here:
Where is the PCB bent? This shouldn't be happening; especially to the degree you seem to think it's ocurring. PCB can flex...doesn't mean that it SHOULD.
RAM: DDR2 and DDR3 run relatively cool as it is...there shouldn't be any issue with RAM being hot. Your CPU or GPU will shut down before RAM will cause an issue. Normal case airflow should also take care of this for you.