Hi Rob
I had a GPU overheating recently 9800GTX+, (some comments I made in thread - KC Good'ay to an old tanker). Simple for me fan had stopped working so all I had to do was get a good aftermarket fan assy - easy eh !!! Ah no !!
but I did it eventually after some butchery.
Anyway to the point - your temps seem a little high over 60 deg C running - however I guess this can be possible. I reached 95 deg C when fan stopped - but happily got a warning so I could turn off programme and select V tune to monitor (I let GPU cool a bit before turning off). On start up after the replacement heatsink and fan change it was 38 deg C indicated; -- and under load (Op Flashpoint DR, IL2, SH/Wolves of the Pacific and tvst) reading on selection V tune 45 to 49 deg C.
So make of it what you may. I'm sure you can get a better HS and Fan for your GPU card and I would recommend this as a cost effective solution --- especially if you overclock.
Best of luck with it mate
Over and out - Morty