Sapphire HD 3870 Review Overclocked
 

The most that I could get out of this card was the core clock at 850MHz from the stock 777MHz and the memory at almost 1300 from the stock 1126. I re-ran all of the benchmarks with the overclocked settings. The overclocking took place with the newest drivers installed. The overclocked results are denoted by "Overclocked" in the graphs.

http://www.overclockersclub.com/revi..._hd_3870/7.htm