"InfiniBand allows for as much as 20 times faster communication between the nodes thanks to the low latency built into the alternatives to Ethernet "
People used to talk about the lower latency of Fibre Channel compared to Ethernet too before converged Ethernet came along and now it's not trendy anymore. RoCE will arrive next year and RDMA latency will stop being trendy too at which point everyone will suddenly want Infiniband over Ethernet (RoCE).
<oldman>I remember when....quality was the number one selling point </oldman>