Buying a new laptop, 2 alts

[Clut]

think i'm gonna go for the crossfire version.

the 6990M gives about 15% more performance than the 580M http://images.anandtech.com/doci/4494/slide9.jpg

Dualscreen is probably less good with crossfire, because crossfire is not supported in windowed mode, so it will only use half your video card.

I'm not sure why ispano is suggesting something with a last-gen cpu.

can anyone confirm that it will run dual screen worse? and does he/you mean when you say crossfire doesnt support window mode? not in any games? i can't use window mode in say f.ex warcraft III?

[ispano]

Crossfire will not work on Games in Window Mode, unless they are DX11 games. WoW being partially DX11 may or may not.

[Clut]

okay, but will i still have the power of a single 6990m if i turn on window mode or will it just not work in window or will it be even weaker than a single one(not crossfire)? this is educating and once again u guys have helped alot in my choices and personal research, thank you!

[Skelly]

okay, but will i still have the power of a single 6990m if i turn on window mode or will it just not work in window or will it be even weaker than a single one(not crossfire)? this is educating and once again u guys have helped alot in my choices and personal research, thank you!

Yeah, if you're in windowed mode you'll have the full power of one gpu. I'm 100% sure this is true for WoW (I have an Xfire system and run windowed). I'm pretty sure its true for all other games too, but this could have changed with some newer games.