Agreed. Idle and load temps I've seen in reviews put it on the warmer side, but still within spec. Inside a cramped case with little airflow, things will get warmer. Very nice card for the money. Given space to breathe, it's a great stock cooler.
Arctic Cooling introduces a passive solution for the 7900 series in October. It's safe to assume a bit of testing has been done that says the 7900GT is cool enough with passive cooling:
Arctic Cooling S1