Hey everyone,

Since I can't do anything without posting in the Newbies section on the forum I thought I should ask for a little help.
 
I just made my first mining rig. Started with a 5970 and later added a 7950 to the configuration. The problem is that I can't overclock the 7950. I mean I can oc it but it does nothing to the hash rate. Still 52 Kh/s. No matter what I do.
The 7950 is in the main PCI-e, followed by the 5970 in the x8 PCI-e port.
I got a Gigabyte Z77X UD3H mobo and on the specs it stated that the x16 port shares the bandwith with the x8. So when the x8 port is populated the x16 one will operate as a x8 one.
The 5970 works great in the x8 port. Got the same hash rate as I got when it was in the x16 port.
Should I move this in the x4 port?
Anyone experienced this while configuring the mining rigs?

Thanks