I don't see how. Dunnington does not have hyperthreading. It is a penryn-derived architecture with 6 cores, and the fastest dunnington is 2.66 GHz. Each processor will provide about 70-80 gflop at that speed. so you're looking at 160 for 12 dunnington cores.
So that's ~160 gigaflops from 12 cores at ~260 watts. meanwhile power7 can do 260 gflop with a single 8-core chip at ~100 W, and they are developing 2-chip MCMs. greater-than 400% improvement in flops-per-watt with power7.
source:
http://www.theinquirer.net/inq...on-benchmarked-windows
So that's ~160 gigaflops from 12 cores at ~260 watts. meanwhile power7 can do 260 gflop with a single 8-core chip at ~100 W, and they are developing 2-chip MCMs. greater-than 400% improvement in flops-per-watt with power7.
source:
http://www.theinquirer.net/inq...on-benchmarked-windows