If I'm not mistaken there are new Santi's: Santi_p53prod2-2-21-rndxxx.
They run longer on the 780Ti's then the Noelia's, Gerard's and Sdoer's from the last days, according to my calculations, close to nine hours.

I also see that the two 780Ti's in one rig running cold at 66°C, both, they are boosted but GPU load is only ~71% on the one in the first slot, and ~67% GPU load on the one in the second slot a FOC-version. (Both have axial fans.)

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Greetings from TJ

I did one of these during the night, apparently. Don't know if my card boosted for it or not, but it only ran about 6.5 hours on 780Ti.

http://www.gpugrid.net/workunit.php?wuid=8220437

Edit: And here's one I found that the 680 did in just under 8.5 hours.

http://www.gpugrid.net/workunit.php?wuid=8219664