MSI HD6850 Cyclone Power Edition performs very well and in some benchmarks it even come close to HD6870 Performance… And the cyclone cooler really keeps it cool…
Reference HD6850 Load Temperature: 74C
Cyclone PE HD6850 Load Temperature: 55C
Reference HD6850 Clock: 775 Mhz
Cyclone HD6850 PE Clock: 860 Mhz
And it can easily be overclocked to 1GHz… 