I have been thinking over the last few days and I have made a decision that I want to upgrade the ram in my 13", early 2011, i7 2.7ghz macbook pro. I use my macbook a lot, and I defiantly notice that when I have a lot of things open at the same time it starts to feel very sluggish. Things like photoshop, msn, skype, steam and other things seem to be slowing down my computer. So here is my concerns. Is it the lack of ram that is slowing down my computer or is it due to the CPU or Intel HD 3000 possibly? Will 8gb ram be good for personal use or would it be a better deal to go with the 16gb ram? Is there any chance that upgrading the ram could improve performance while playing games? Will installing the ram manually void my warranty? I paid for the extended warranty so I am a little worried about that. Anyways, those are just a few of my concerns. Thanks for all your help!