hello are there some network (switch and cards) that have low latency times (perhaps of the order of 20-30 microseconds), but that were not so expensive ? it is intended for a modest, experimental and no numerous athlon cluster i have tried with a 10 mbps hub and 2 k7-550 cluster, but the results seem very bad, i have latency times of 1100 microseconds with process that last 110 microseconds in each one of the processors which networks have been tried? some advice ? thanks