may i know whats the difference for jetstream and normal

and also 2gb and 4gb

thanks

so if i get the 4gb one..and then i can force my monitor support higher than 1920x1080 reso?

most of the monitors and tv support up to 1080p only am i right?

so no point if i get the 4gb one? what if i wishes to play on my tv? it all depending on my tv? because i have my pc connected to my tv somehow it felt a bit laggy on the screen and its like kinda small

Actually, your hypothesis is not fully accurate. It is true that some of the newer games e.g Crysis 3 consume more than 2GB memory at even 1080p according to this review by Guru3D, but this alone will not be the reason why the game isn't playable. Even with a 4GB VRAM, the GPU itself isn't strong enough for you to even play smoothly with all the details maxed out. So we shouldn't conclude that 4GB will simply allow you to play most games at 1080p lag free, when some games are so intensive that the GPU will simply run out of processing power, rather than become memory limited.

Even HardOCP concluded that there isn't any advantage between a 2GB and 4GB version of the GTX 670.

Same scenario is replicated as well, as reviewed by HardOCP. You'll likely run out of GPU processing power before hitting the VRAM wall.

so i guess 2gb would be the best choice i supposed..however what do you all think bout the power supply? good enough? need any cooling system or anything else to add on?

if i were to do SLi in the future, can my mobo support this card? looks huge and gigantic