I plan to use my system mostly for gaming, and the occasional Photoshop, Flash, and video editing. Probably the most I'll ever be doing is playing a game while surfing the web at the same time. I found a good deal on 8gb(2x4gb) of 1600mhz ram for around $50. Buying 4gb would be around $15 cheaper, but I'm on a really tight budget and it's money I'd rather use towards buying a better case or motherboard. My question is, would be a notable difference in performance between 4gb of ram and 8gb of ram?