I'm seriously determined to hit 2400Mhz stable for my iGPU.
I have a Gigabyte A75-UD4H and some Trident X 2400.
If that don't do it with either the 3670K or 3870K,
I'm just not sure what would. lol
iGPU unstable @ 828Mhz?
Must be a 6530D or 6550D then, I'd guess.
Did you run OCCT on it and see errors @ 138Mhz, or at any point leading up to it?
And, yeah-- Vengeance+APU= FAIL from what I've seen.EDIT:
Wait-- are you set to IDE mode, on DVI/HDMI, etc..?
138Mhz would be 5Mhz over the 133Mhz strap.
Almost seems possibly your problem,
because a 5Mhz OC is hard on a tied system normally.
I can't stress enough how these things can throw you off quick.
You might not wanna give up yet.
The strangest things can be holding you back.
With reference @ 150Mhz,
I was working my CPU multi back up to x27.
Up to x24 was fine running 3600Mhz,
but x25 wouldn't even post @ 3750Mhz.
Bring the multiplier back down to x24,
then proceed to raise the reference more.
Went all the way to 165Mhz,
which obviously exceeded 3750Mhz.
After the reference was higher,
I could raise the CPU multiplier past x25 again.
It doesn't have to make sense to you,
just the APU. Edited by Rezard - 3/16/13 at 11:20am