Core i7/X58 Overclocking Thread

[dejanh]

Vista 64 here.

Do you have ACPI 2 enabled?

200 x20 is working fine here. Maybe its a per chip thing?

Same here. In fact, if anything 20x200 is more stable for me than either 19x211 or 21x191.

I think that it may be a per-chip thing, except I have no explanation for it short of some chips actually having faults. However, I'd think this would be a pretty high number of faults as both i7 940s I use have the same problem and they were picked totally at random, and a lot of other people are reporting not being able to stabilize anything with 20x multiplier. The flip side of this is that the failure rate is surprisingly high for it to slip past Intel's QC which then points to the boards being the culprits. Could anyone confirm that this does not in fact happen on non-Asus boards?

In terms of stability, In theory, 20x200 should be more stable than 19x211 or 21x191 as one pushes the BCLK close to the limits, and the other pushes the multiplier to the limit (at least for i7 920).

Anyway, I am again failing on 20x200. It seems that whatever happened yesterday when I ran it was a fluke. I managed to do a few runs with it fine, but now again 20x200 is not stable where as even 216x19 is stable (but too hot for my taste). Running on R2E here...

Chip or mobo either way it is BS. If it is the chip, Intel will probably just fix it all in the next stepping as opposed to providing any kind of good workaround. If it is the mobo, I am not expecting a fix ever.