So there is a GTX 260 in the computer right next to me, it says in GPU-Z that it's the 216 core, 55nm version. The temps seem okay, as well as the OCing - about 15% over stock.
I'm just a bit unclear about the model number of it:
It is an XFX GX-260N-ADE
F, googling that does not bring up anything too definitive and still leaves me wondering. That is because the only other model number that I can find is GX-260N-ADF
From having googled GPU-Z SSs the texture fill rate also seems to vary... by a few GB - the SSs from google have higher numbers, even with slightly lower clocks at times... :S
Here is a GPU-Z SS just in case:
EDIT: here is also a photo of a slightly unusual box, or at least its smaller than the ones around the net appear to be: