OK so I want to get dual GTX 480's and an i7 930 rig but if I got all that then I wouldn't have enough money to upgrade to windows 7 (or any other 64-bit OS) so id be stuck with XP 32-bit for a while until I got the $100.
My question is how much system ram will my OS see if I have dual 480's with a combined 3gb of v-ram. I have heard that with SLI your total usable video memory doesn't double by adding a second card, but im just making sure, so maybe that would only be 1.5gb total. If my memory serves me correct a 32-bit os can use up to 2^32 bytes = ~4.2gb minus other ram/cache. So if I had 3gb of system memory that would only leave me with 1GB of usable ram???
Cause that would really suck and would make most of my games unplayable with only that much usable ram.
My question is how much system ram will my OS see if I have dual 480's with a combined 3gb of v-ram. I have heard that with SLI your total usable video memory doesn't double by adding a second card, but im just making sure, so maybe that would only be 1.5gb total. If my memory serves me correct a 32-bit os can use up to 2^32 bytes = ~4.2gb minus other ram/cache. So if I had 3gb of system memory that would only leave me with 1GB of usable ram???
Cause that would really suck and would make most of my games unplayable with only that much usable ram.