he said if you get SLI 7900gts its the same price as the 7900gtx he wanted. hmm i said youd get more performance out of sli 7900gts for the same price. common sense lets see, why notget the sli? its the same price, why would you buy somthing thats less performance for the high resolution he wanted to display at? idk maybe you would, but not me. "NOT worth the money for the gains you get at all" its worth the money when the two things he is conflicting about is the same price. its still performce who cares if its not a practical boost but its still a boost, if its only 5-6 fps difference thats still 5-6 fps more. (not accurate fps increase)
if youve got the money to go sli, then do it.