I would add a GB of RAM and substitute the 8800GT for something like a 8600GT/9400GT/9600GT, you don't need a 8800GT to play movies in HD. And even with your config I doubt that there would be any stuttering, but the 8800GT is overkill and 1GB of RAM is just not enough. Save yourself $60 by going with one cheaper GPU and buy an extra stick of RAM.