The rumors and rumblings that the yields on the new generation of Fermi GPUs from NVIDIA have been exceedingly low have been swirling for a long item now. So far, NVIDIA has been quiet and hasn't offered any official stance on the subject.
That changed this week when DigiTimes interviewed NVIDIA MCP general manager Drew Henry. Henry stated that the rumors that yields on Fermi GPUs were 20% or less are completely untrue. Henry says NVIDIA has everything under control.
Henry was also asked in the interview why NVIDIA didn't have GPUs with 512 cores and speculation that the lack of 512 core GPUs was due to the low yields. Henry stated that GPUs with 512 cores would be coming in the future, but didn't comment on any specific products.