I want to use my old 6950 for bitcoin/litecoin mining and the new 280X for normal use (not in crossfire mode), but I'm wondering whether my PCIe2.0 motherboard will bottleneck them?
My new system:
Gigabyte Z68AP-D3 (PCIe 2.0) CrossFire
AMD R9 280X
AMD 6950 2GB
My new system:
Gigabyte Z68AP-D3 (PCIe 2.0) CrossFire
AMD R9 280X
AMD 6950 2GB