Some benchmarks of Thuban X6 1090T

[Dresdenboy]

So the Nehalem cores are 10%-15% faster in single threaded applications
and another 20%-30% through the use of Hyper Threading. They achieve
that at a cost of being 1.8 times larger.

Thanks for that picture. I published it on my blog with some thoughts added. Besides the likely double pumped FPU there might also be signs of a trace cache (directly below the execution units). Maybe you have an even higher res SB die shot to check this.