I am trying to i have a Packard bell i smart have upgraded the psu to 600 w and got the 1gb GPU a while ago it cost bout 130 as well! just put 3.1 x2 cpu in and 8 gb ram plus an extra 1tb hdd. I was given the second gpu, the plan was to install both and link them together but my motherboard only supports 1, so i was wondering is it worth swapping the 1 gb for the 2gb?