Overclocking

To find the maximum overclock of our card we used a combination of AMD internal overclocking software and our benchmarking suite.



The final overclocks of our card are 863 MHz core (11% overclock) and 1140 MHz Memory (14% overclock). Both overclocks are very quite impressive, it looks like there is quite some headroom left in the RV730 design. I wonder why HIS were so conservative with the clock selection on their overclocked edition though. 825 MHz would have been a really nice default core clock for this card. Maybe AMD had something to do with it ...

Temperatures

While the HD 4850 and HD 4870 where plagued by high load temperatures, the HD 4670 runs comfortably cool. A completely passive cooling solution seems realistic, let's hope that some add in board partners will soon offer such cards. Also it seems to me that the low temperature fan speed in the BIOS is set too high. 36°C is so low that 50° and a quieter fan would have made more sense.