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The Sapphire HD 7770 GHz Edition is apparently pushed pretty hard from the factory as pushing it via the Catalyst software netted us marginal returns as the GPU is default at 1150 GPU Core and 1250/5000 on the memory. This differed a bit form the spec but not necessarily something we hadn’t seen before. When pushing the GPU we were maxing at about 1170-1178 MHz depending on workload. This tells us we literally are at the limit for the card as even voltage increases netted us little to no extra headroom.
Due to the very high default clock we went ahead and left the card at stock to test as many gamers don’t bother overclocking the card and would rather plug it in and game. Also I would like to note that memory seems just about as maxed out as the GPU, we could get very small increases of approximately 20-30 MHz once again depending upon workload. Sapphire has done a good job of finding the absolute limit of the card and putting it there which in the end means any gamer can get this card and know that they don’t have to overclock as all of the hard work has been done for them.
