Help me build pc

[Tathaga]

i am gonna buy core i7 920
with 8gb OCZ or corsaid RAM
and radeon hd 5870 ( 1 piece, for now)

i read that p55 mobo supports crossfireX in x8 but not x16
but x58 mobo supports x16 (fullest)

so if i later buy another 5870 radeon and put it in p55 mobo will i have less output ??

suggest...

 

[Tathaga]

i am gonna buy core i7 920
with 8gb OCZ or corsaid RAM
and radeon hd 5870 ( 1 piece, for now)

i read that p55 mobo supports crossfireX in x8 but not x16
but x58 mobo supports x16 (fullest)

so if i later buy another 5870 radeon and put it in p55 mobo will i have less output ??

suggest...

corsair not corsaid ... lol