So I have a Sony Vaio EB Series laptop, and have recently upgraded my HDD to OCZ Vertex 2 120gb SSD. I liked the performance boost. How much practical use would 8gb have over 4gb? It's currently on sale right now: http://www.newegg.ca/Product/Product.aspx?Item=N82E1682...
Does that price seem decent? For the level of performance gain I'd get from this?
You would need to be running a 64 bit version of Windows to use 8 Gig of memory. You won’t see any difference in performance on general usage or games by having the extra 4 Gig. You will only get any benefit from the extra 4 Gig if you are running applications that need lots of memory such as CAD programs or video editing programs.
Hmmm, interesting. Well, would having the 8gb installed waste more power? Even when it's not being utilized? And if I purchase 1 stick of 4gb, would my performance improve over the 2x2gb I have right now?
yes, if you put one 4 GB so there are 3 sticks in your system (2+2-4). The system become run at single channel because one memory is 'un-paired'. Hence decrease the speed, maybe 3~5%.
to run in dual-channel, must put in pair. (2+2-2+2 or 2+2-4+4).