I did a lot of research before buying this processor, it is by far the best middle of the road xeon out there. It balance between cost and performance is bang on. I do not have any regrets with my choice as i have yet to tax out the processor even running hyper-v with 6 vm's
operates at a constant 32 degrees; great speed step technology that idles at 1ghz no more wasted clock cycles; Over clocks to 3.2 ghz; 10 cores and 20 threads
I would say price but compared to other processor pricing its worth it