At least you don't get core 15 WU's.
Woke up at 3 am to massive coil whine, like a high pitch alarm from my 780.
Finally fell back asleep only to wake up to see that the 780 picked up a core 15, with no QRB and tried folding it for a few hours only to have the client say unstable machine and dump it. Folds core 17's just fine...
Those 9411's aren't all that great yes, I remember those from my AMD folding days.
The science behind them is useful though so keep folding away!