HELP please. Asus P5Q pro. THANKS

[licid24]

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131299

I was looking at a x38 board but this new p45 costs less and has 2 pcie 2.0x16 lanes.
I read that when you use both they go to x8.

I want to use 2 4850. will this MB bottle neck them? Or will it run just as fast as it would on a x38.

 

[akhilles]

http://www.asus.com/products.aspx?modelmenu=2&model=2269&l1=3&l2=11&l3=709&l4=0

2 x PCI Express 2.0 x16 slots, support ATI CrossFireX™ technology at x8 link
(PCIe x16_1 blue, PCIe x16_2 black*)

x8 in Crossfire.

But I think you might wanna go for X38 since it's about $200. Especially if you're keeping the board for years.