Quite possible. The early (Sept-Dec 2011) scuttlebutt was indeed that AMD were going to use 28HPL, and the stock voltage for the HD 7970 at ~1.17v would indicate that (according to the TSMC link I included) HPL would be a more likely suspect than HP. The yield problem seems to be related to HP and not HPL according to sources ( 6 of 10 IHV's affected- contrary to to the feelgood quotes coming from other sources). HP was supposed to only come on stream in March, so if that's indeed true then Cayman will be HPL...although "Low Power" is kind of subjective since the board has 300+ watts of usage potential. To make things worse, Caymans SRAM is indeed 28nm HP (!) How the RAM IC's could be produced in December when the 28nm HP line only came online in March is a head scratcher ( not interested enough to fork out $7000 for the report though). If the "GHz Edition" launches with a ≤ 1.0v VDDC I guess that will answer most questions. Although, if 28nm HP has yield issues I'm not entirely sure why AMD would be willing to move production over to it. They could, I suppose, go with both (presumeably) HP and HPL -but who would buy the 925M version?