I've always found 3Dmark '03 to be the best system stability test of the 3Dmark tests.
It's probably my favorite "quick" stability test along with super-pi when I'm feeling out the upper limits of an OC.
My own preference would be a standard "box script" which can be cut and pasted from the first post and should be required for all entries.
I'm fairly strong on the need for screenies as proof. These kinds of things get out of hand fairly quickly if proof isn't required, and IMO that would turn off the folks who are trying to post legitimate benchmarks.
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