GA-Z77X-UD5H/3770K Stability question(s).

[boondocks]

Re: GA-Z77X-UD5H/3770K Stability question(s).

OK, I put the correct MB back in the case and ran ATTO and AS SSD on Auto (which is the default setting where I started).

The results with C3/C6 set on Auto were AS SSD Score 404 and ATTO Write 514984, Read 554109.

Maybe just needle quiver but the C3/C6 Auto results were lower that the Disable results - except the 554109 Read.

So at least on my configuration "Disable" shows the best SSD performance AND gets rid of the WHEA errors. The only drawback is the CPU idles 4-5C hotter. Just an aside, with the C3/C6 set to Auto the WHEA errors came back with a vengeance, in fact, IE 10 stopped working trying to enter this post because of a WHEA error. Have you go any ideas on how to fix this issue? I have tried increasing the voltage from +0.000 up to +0.025 (LLC set to High) which got the Vcore up to 1.32V under load and still got WHEA errors on one program - Schwab's Streetsmart Edge which uses very little CPU cycles! The system would run IBT and Prime95 with no issues! Is there some other voltage setting I should be playing with that will help stabilize the system when the Vcore jumps from <1.0 at idle to 1.30+ when the multiplier changes from 16 to 45 or whatever? It seem the system is ok as long as the voltage is not jumping around to save energy.

You probably just need more offset / vcore. I don't understand the basis for the WHEA errors with the C states set to Auto, I never had that problem.
Both my 3770K/UD5H boards run at around +.020 offset and medium LLC for a 4.5GHz OC.

[Ken429]

Re: GA-Z77X-UD5H/3770K Stability question(s).

Oh well, I tried LLC set to Medium and the Offset to +.020 and that gets me to the same Vcore under load as LLC set to High and the Offset at +0.000. Unfortunately, I get the same results when running Schwab's SSE stock trading program. When C3/C6 is Disabled all is well as soon as I set it to Auto the WHEA 19's start to appear in the Event Log. Maybe my CPU and/or MB are just getting worn out!

[boondocks]

Re: GA-Z77X-UD5H/3770K Stability question(s).

The Schwab program may stress the cpu in ways that others don't.
But if the board is happy running with the C states disabled and you have no problems then that's all that really matters.

As far as your settings, every cpu/board is different to some degree, probably just coincidence that both my Z77's like identical settings.