Answers as follows:
a) Yes. RAM on video cards exists in total isolation of the main system RAM
b) Depends on the demands of the game
c) Maybe, maybe not. I once had a motherboard that was only supposed to support up to 1GHz processors, but I put a 1.1GHz in it no problem. It is just one of those things you have to try before you know, unless you can find someone else who's already tried and documented their findings.
just like what the title said. it is possible? im using a celeron D processor 3.06ghz, 1.5gig ram, geforce 7100, and ecs 671t-m v1.0 motherboard. im planning on upgrading some of my parts. with a tight budget. i have here my options, buying a ddr3 video card, changing my processor to dual core e2200, and increasing my ram to 3gig, now here's my inquiry:
a) would it be possible to use a ddr3 video card to a ddr2 motherboard? and would it affect other components of my computer like i need to buy a new ddr3 compatible motherboard and ddr3 ram, just to use ddr3 video cards?
a-1) if that's not possible will xfx gf8500gt ddr2 fatality decent enough to play online games?
b) will dual core e2200 fit my needs in terms of gaming?
c) according to my research my current motherboard can only support 1gig of ram per slot(btw i only have 2 slots for my ram), would it be possible for me to install a 1 gig ram + 2 gig ram?
i would really appreciate your help.. im just really confused. thanks in advance