This is HP's SE model, a low latency version of this Gen 8 server. It features Intel E5-2687W V2 CPUs which provide a higher base and higher turbo frequency than similar E5-2680 V2 processors. Also unique to this model is a jumper to connect (2) PCIe slots directly to a CPU for fastest throughput. These were available as a special order configuration at a higher price when new.