I Currently have two Sparkle GTX 460's 768MB 192-bit GDDR5 in SLI in my system. They have been performing very well for me over the past couple years. I am seeking opinions on whether i should upgrade this year or overclock clock them because they will still perform fine or just leave them be. I just want to be able to handle the newest generation of games coming out at 1080p and 60FPS.
I suspect the current cards suffer a fair performance hit with AA enabled. If this is something you can't live with then, and only then, might you want an upgrade.
Be warned, though, it will be expensive, to get any useful performance improvements you'll be looking at the 660Ti/HD7950 as a replacement.
Overclocking the graphic cards will certainly help-and it's free.
Oh yes, one last point, that i5 of yours is really, really, screaming out to be pushed harder . Go on, get the overclocking whip out on that lazy slug as well!