The Tech Report has written an in-depth article about the NVIDIA Fermi graphics architecture, you can read it over here.
If you've been following Fermi since it was announced, you'll know Nvidia didn't really talk about the specific graphics transistors in Fermi implementations. We're going to take a stab at that, though, using information gleaned from the whitepaper, bits teased from Nvidia engineers, and educated guesswork. Remember, however, that graphics transistor chatter does ultimately remain a guess until the real details are unveiled.
"Why did Nvidia only talk about the compute side of Fermi?", you might ask. You can't have failed to notice the company's push into non-graphics application of GPUs in recent years. The G80 processor launch, along with CUDA, has meant that people interested in using the GPU for non-graphics computation have had a viable platform for doing so..