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PCI x16 and x4 crossfire

Last response: in Graphics & Displays
December 2, 2010 1:38:54 PM

I guys i have a radeon 6870, phenom 2 1090T and this motherboard:

MSI 870-G45 AM3 AMD 770 ATX AMD Motherboard

It has 2 PCI 2.0 slots but one is 16 x and the other is 4x

I am looking to add another 6870 for crossfire.

Would the 4x bottleneck badly?

More about : pci x16 crossfire

a c 169 U Graphics card
December 2, 2010 1:51:28 PM

For PCI-E 1.0 cards, x4 will definitely hurt the performance but for PCI-E 2.0 cards, there isn't much of a difference between x16x4 and dual x16/x8 speed.