It also depends on your CPU if you want to upgrade your RAM. Because you could end up getting a bottleneck either way. 4 GBs is pretty common now, but 6-8 is becoming easier to accomplish due to RAM prices going down. If you have like a 4GB stick, then Id'e say yeah. Go buy a 4 GB stick and throw her in there. Just make sure it's the same speed as the current RAM or you may lose speed if it's slower than the current one. But I wouldn't buy more RAM if you are occupying all of your RAM slots because you'll end up spending probably to just get them. 60/70 dollars to get 4x2= 8 GB sticks.