My laptop, the HP 4-1030us, will max out at 16gb of RAM at 1600 mhz. Currently, I have 4gb installed; the single most resource-intensive task I would do at one time would be listening to iTunes with a newer game running (Dead Space 2, anyone?).
I initially wanted to aim for installing the max capacity for memory that my laptop could handle, but then I read somewhere online where even unused memory has to be constantly monitored by the computer's CPU. Granted, the article was written around the Pentium-era, but I want to know if, with an i5-3317u running between 1.7~2.6 Ghz, this would still be an issue to fret over.
I'm well aware that 16 gigs of memory probably isn't going to be any more noticeable than 4~8 gigs with my general computer activities, but I am concerned of the possibility of there being a decrease in performance because of too much memory. Basically, if I chose to invest in a full-on 16gb kit, or even simply add a 4gb stick along with my currently installed 4gb module, would I notice a performance decrease in games and applications?
Also, while I'm posting a memory-related topic, I'd like to also ask: is the 1.7gb of memory associated with my HD 4000 IGP shared memory or directly-integrated memory? If shared, would upgrading from 4 gigs, say, increase framerates at higher resolutions? Also, one of my RAM banks are empty; would, for example, having both banks filled with 2gb sticks out-perform a setup with a single 4gb module?