Re: [ANN] Primecoin GPU miner: up to 2.6 chains / day on a 280x +FREE solo version
of course why not... mine is latest cat 14.4 running 4x7990 rig and that's 8 gpus... 
With the 14.3 driver, is it possible to have 6 GPUs?
Maybe I need to be clearer. Is it possible to have 6 cards?
On the 13.12 drivers you needed modded drivers for win 7 to even accept all cards.
More info here: https://litecointalk.org/index.php?topic=11761.0