CPU 24/7 uses the latest Intel Xeon E5-2600 series of processors. In contrast to other processors, for example, the AMD Opteron, with its large number of cores, at 3.0 GHz (E5-2690 v2) this CPU series provides top level performance and very good energy efficiency.
Ethernet involves protocols and hardware for the communication in clusters. In contrast to InfiniBand Ethernet is characterized by a significantly higher latency. But by now Ethernet is also performing at a bandwidth of up to 100 Gbit/s.