PCI Bus Speed Problem?

[lupi]

I've been going through various things trying to figure why I'm getting some relatively constant momentary freezing during game play. I noticed while doing this that the catalyst control panel showing my 7970 at only x4 bus setting.

I installed gpuz for the first time and it is showing x1 at idle and x4 at load. This is the only card installed on a machine with a 2600k and giga z6x-ud3h board.

On my way out this morning I checked my office machine that has a nvidia card (not sure where to find bus setting in the nvidia control panel) and cpuid shows x16 bus use. Will check it when I get home with gpuz.

I'd my gpu really running at such a low bus speed? How can I fix this if a problem?

 

[Cerb]

Are you using any other PCIe slots?

And, try turning this off:

 

[lupi]

It's the only card installed.

 

[lupi]

found that setting, it was at max ower but turned it off with no changed. Loaded up a stress test/benchmark program and even though everything still reporting that the x16 bus only running at x4, score wise it seems inline with other reported values. Only thing I can think of is the board throttling based on need unless someone has better knowledge.

 

[sm625]

Which slot do you have the card installed in?

At any rate, you're not likely bandwidth limited. It shouldnt have much of an effect.

The above graph is from http://www.techpowerup.com/reviews/Intel/Ivy_Bridge_PCI-Express_Scaling/23.html
It is a summary result of several tests. You're only losing 5% vs x16. Unfortunately I could not find an "frame time" data for x4.

How long are these freezes? I know it is difficult to guess accurately down to the nearest say 50 mS, but the more accurate you can estimate, the better.

 

[lupi]

I traced the game issue to another program, so I was really just trying to figure out if there was some other unrelated problem with my board or card. Its in the x16 slot, cpuz reports it as a x16 capable slot, cpuz reports the card as x16 capable, cpuz and gpuz report it as operating at x4.