he could be using a different mining software, have higher overclocks, and maybe he is also cpu mining.
use this miner
http://k-dev.net/cgminer/and try to find a listing of your card here and mimic their settings to get the highest output you can. https://litecoin.info/Mining_hardware_comparison
another option people talk about is using
http://guiminer.net/bamtthis is a dedicated mining OS
i've heard people getting better results using their software.
Everything is identical except for motherboard and isp as I previously stated. We are both running newest version of bamt, and only gpu mining. Our internet speeds are almost identical so I am leaning towards ruling out that possibility. Anyone other ideas?? He has a biostar h81 board with dual core processor while mine is asrock 990fx extreme9 with a single core if that makes any difference. Our cards, power supplies, etc. everything else identical.