Thx for the fast response Tecmo,
Actually that is the question where Im also asking myself. One reason why I think I might not need the SLI combo is #1) gets too costly just for the few games I played, right now I play mostly Starcraft2, AssainCreed1/2, residentevil5 those, FPS game I sometimes do, but not a big fan of first person shooters game kinds. And for the resolution Im gonna set at, Im probably gonna just try max graphic detail at 1600x1200, but not gonna bother any higher or max res cuz I think my eyes couldnt view all that wide anyways, and if 1600 showing signs of struggle, Im still happy with lower rez down as long as picture quality still gonna be smooth & clear, no lags during game, no choppy lines.
Secondly, Im not the type where I time to time looking for upgrade unless technology change to a point where I must before I can continue, so Im hoping this rig will last me few years before the high quality graphics I see on screen starting to become the lower end. Plus, technology change way too fast, I dont & wont even know by the time few years later, probably it'll require a new generation of motherboards, or PCIe2 probably will get replace by something else.
Before I was getting overly excited when I aiming for SLI power, althou SLI still gonna benefit, but the price not likely to drop that much within months or maybe year, and if by then the price drops half or more, that means the next legacy card has arrives, so even a lot cheaper to get 2nd 460 by then, but it'd be pointless if by then the standard require new gen GPUs slots, or maybe PCIe4,5 or DDR3 turns to 6 or something higher, maybe by then BluRay has something else replaced, require GPU higher version of shaders, which probably need new gen GPU cards...so on & so on.
So what I thought of, is like, Im willing to spend enough for a good or above average quality machine that last me the next few years, & when next generation technology arrives, probably getting another GTX460 (which probably by then would only cost $70 or so) to make a lilttle boost wont satisfy the quality standards by then, which probably gonna need next gen Mobo, next gen RAM, next gen GPU & all other, so I mind as well just take it as a final set-piece config until the next gen machine kicks in. Knowing by then if I wanna catch up to somewhere above average, I'd probably end up getting a new rig, or at least replacing half the rig. So instead of designing the current rig with many upgradebility, I mind as well save up the upgrade money for next few years & shoot for the next generation machines. If I estimate the time line around 1~2 years wide, its plenty of time for me to save for the next big bad azz machine, instead of spending little bit time to time just to play the catch up game, which Im not good at anyways. Im not sure if I had the right mindset, but just looking at the technology change so fast, it seems to make more sense for me to save up the upgrades for the next bad azz, dont u think?
Again, thx for ur help.