Hmm here is hoping that eVGA's announcement this time next week is actually for the GT300
It does sound like it is going to be a monster GPU (in areas of size, performance, power consumption and price), however it WILL be the fastest Single GPU card out there and that is all that matters to me.
I do not give two hoots about SLi or Crossfire GPU's as they have woeful minimum framerates, rely on praying to the driver Gods and also are usually loud and extremely power hungry.
John