AMD 970 performance difference between comparable GFX cards.

I'm looking to purchase a new system for myself.

MB: Gigabyte GA-970A-D3
CPU: AMD FX-8350

This particular setup uses the AMD 970 chipset and I'm curious if there is a noticeable performance (or compatability, or stability) difference when using comparable video cards from AMD/ATI and nvidia.

My guess would be that the AMD\ATI GFX card would generally be a better experience simply because the chipset is designed for use with radeon cards but i haven't been able to find any good benchmarks or comparisons.

Any input would be appreciated.

This chipset is designed for AMD FX CPU. As far as graphics goes and as per AMD own chipset specs
This means it has a 1 x 16 lane PCI Express 2.0 slot. This is a standard and will provide the same GPU performance as any other brand chipset with the same standard.

So you can use this card or any card with specs and pricepoint you like.

For reference the current PCI Express standard is 3.0 but motherboard and GPU pricepoints will be higher than ones with 2.0 spec.