Nvidia GTX580/GF110 bigger than GTX480/GF100

Short story, the die size of the GF110 is about 550mm^2, about 4% larger than the GF100/GTX480. These were hand done caliper measurements, not instrumented, so they will change once the thing is put under the TSA screener set to 'dark tan'. We are confident enough in them to say that the GF110 is a larger chip.

.1mm is hard to measure by hand, and only made more unpleasant by the coating of underfill that hasn't managed to glassify yet. Since the chip is around 23mm on a side, each .1mm of inaccuracy puts the die size off by over 2mm, hence our caution.