With TCP you have the congestion control algo baked in hardware, tcp segment and checksum offload. You can pass things directly to the NIC for massive latency,

With TCP you have the congestion control algo baked in hardware, tcp segment and checksum offload. You can pass things directly to the NIC for massive latency, bandwidth and offloading processing away from the cpu. A lot of NICs are essentially just as software modems, with the CPU handling this anyhow. Even server hardware sometimes has these lame NIC chips on them. Be careful to rid the specs of the hardware you buy, otherwise it will indeed be your CPU doing all that work.