The process took 4 weeks. I interviewed at NVIDIA in Oct 2011
Interview
There were three phone interviews. They are all pretty much the same but with different people of course. They ask you questions about your resume for the first 10 minutes and then its straight into technical questions. The questions that were asked was about timing of a circuit, how to design a AND gate out of a XOR gate. Pretty much basic design question you would learn in your sophomore logic design class.
Interview questions [1]
Question 1
If you had a risc instruction set architecture with a 4 bit ASLU unit, how would you extend your architecture to include an 8 or 16 bit ALSU unit without heavily modifying the hardware?
The process took 1 day. I interviewed at NVIDIA (San Jose, CA) in Nov 2011
Interview
It is only a phone interview with one of the hiring manger I think. I don't know why I can hardly hear him even though I was at a very quite place. He asked about how to calculate setup and hold time by giving some parameters in the circuit. Also, frequency divider by 3 with 50 duty cycle.