New MacPro Processor specs

Does anyone happen to know the actual processor model that is being used in the new MacPro?

According to the intel tech specs, the only 5400 series @ 2.8ghz with 1600 Mhz FSB runs at 80 watts and is model number E5462

The 3.0Ghz with 1600Mhz FSB runs at 80 watts, model number E5472 or 120 watts, model number X5472

The 3.2Ghz with 1600Mhz FSB runs at 150 watts, model number X5482

Does anyone know for certain which model processors are used, because from what I am seeing here, the 2.8Ghz, model number E5462 seems to have the best price at $$$/Ghz not to mention pulling 50-90% less power under full load which means cooler system temperatures and lower electrical operating cost. Electricity may not seem like a large purchase factor, but when you look at the way some of the systems run, i.e. 80-100% for days at a time you could be looking at a potenial savings over the top end processor of $180 and up per year depending on your local electricity cost.


Food for thought...