gigabyte 7970oc 4 way crossfire

[ALIOO9]

i want to 4 way crossfirex of gigabyte gv-r7970oc-3gd its possible or not

 

[Mahisse]

Why shouldn't it be? .. If you have motherboard that supports it.
But try reasearhing a bit more on the topic. 4 way crossfire/SLI actually perfoms worse than 3 way crossfire/SLI in most cases.