BAMT : GPUs taking "breaks" intermittently.

[WebWolf]

Hey all, I did a little bit of searching trying to find a similar problem, but I could not find any. What is happening is that GPUs are shutting down probably around every 30 min.
It is happening to all 3 of mine (Sapphire 5850 ref, XFX 5830, Sapphire 5830).
I have a Cooler Master 1200 Watt PSU, so I'm pretty darn sure thats not the problem.
Mobo is a Gigabyte UD3, Processor an FX-8120 8-core.

Here is a screenshot of GPU #1 chillin' out, but they all do it. Also, check the graphs and you can see the crazy peaks that are formed.

http://i49.tinypic.com/b9c3k3.png

Its just annoying, its bringing down my shares and average Mh/s. If anyone can give me some recommendations, I would really appreciate it! Thanks guys.

ALSO: I tried both Pheonix cores, they do the same. In addition, its does this on the default clocks, too.

UPDATE: I am trying bitcoin.cz pool, but is is still having the same issue. Bypassing my network switch to see if that does anything...

[notmove]

I also have this problem. Watching.

[Shadow383]

The thing that really stands out for me from that screenshot is your >12% reject ratio 
I'm guessing connection problems...

[WebWolf]

The thing that really stands out for me from that screenshot is your >12% reject ratio 
I'm guessing connection problems...

Hmm, connection does seem like something to look into. Ill try playing with the router and switch. The accepted/ rejected resets every time the GPU goes down, so I never see more than ~200 shares accepted total, lol. Thanks for the tip.

[WebWolf]

Still not solved, tried everything networking, I don't think thats it. Anyone else have any ideas?