Hello I have had my galaxy gtx 670 4GB version for 2 weeks now. I haven't monitored temperatures much but today I tried with kombuster. I have not overclocked my card. Within five minutes the temperatures get to 82C. This is too high at stock level right? I also ran heavenbenchmark for 15 minutes and the temperature was 78C.
You could also try setting a custom fan profile in afterburner to improve those temps. On normal/stock fan settings, my 6870's will hit in the high 80's, but after I set a custom profile, they never reach 70c even under full load.