Consumer wise it's the i7-3930k and 3960x. For the XEONs as the other person noted, it's the E5-26xx and the E5-1650 is pretty badass. You can still go higher

Consumer wise it's the i7-3930k and 3960x. For the XEONs as the other person noted, it's the E5-26xx and the E5-1650 is pretty badass. You can still go higher than these, but the prices skyrocket on the E7 line, eg the E7-8870, and the core to core value isn't higher: http://ark.intel.com/products/53580/Intel-Xeon-Processor-E7-8870-%2830M-Cache-2_40-GHz-6_40-GTs-Intel-QPI%29 http://ark.intel.com/products/53580/Intel-Xeon-Processor-E7-...