Aha, i see.
Both the 1866 vengeance kit i have here is v5.11 :)
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Statement directly from AMD. They ARE NOT making these but are treating their distribution as a litmus test for the possibility of expanding the product range:
http://www.hardwarecanucks.com/news/...-some-answers/
Not to be a nitpicker, but depending on which date format (MM/DD/YYYY or DD/MM/YYYY) is being used in those runs, there's either 2 days or 2 months between the runs. The latter pretty much completely invalidates any usefulness of comparisons, since it's entirely possible for game patches to change performance, while the former just makes me want to verify that you didn't use the new 280.26 drivers that just came out on the 8th.