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My voltage shows as about 1.27 when set to +300, not 1.32 like yours, need to read up more.
Are you using the LLC hack?
http://www.overclock.net/t/1421221/gtx780-titan-any-ncp4206-card-vdroop-fix-solid-1-325v
Brand new Gigabyte GTX 770 Windforce 3x that arrived this morning to replace my aging 560ti. Latest beta drivers and no tuning beyond sticking it into the machine, not too shabby and should (hopefully) help my snapshots in WoT lol I'll see how far I can push it.