maximum number of GPU in quad core CPU

Hi…

I’ll upgrade my system with 8 GPU with 4EA of 9800GX2 for research project…
my board support 4 core CPU and 4 PCI-e slot.

I’ll work on OpenMP(or pthread) with multiGPU CUDA…
The environment of (Number of GPU > Number of Core) is OK?
Do any one experience about MultiGPU and core?

thanks.