6 4 0 0 , ▁which ▁was ▁later ▁renamed ▁G SN ▁( for ▁G ig aby te ▁System ▁Network ) ▁but ▁this ▁saw ▁little ▁use ▁due ▁to ▁compet ing ▁standards ▁and ▁the ▁high ▁cost ▁of ▁G SN . ▁G SN ▁has ▁a ▁full - du plex ▁band width ▁of ▁ 6 4 0 0   M bit / s ▁or ▁ 8 0 0   MB / s ▁in ▁each ▁direction . ▁G SN ▁was ▁developed ▁at ▁Los ▁Al amos ▁National ▁Labor atory ▁and ▁uses ▁a ▁parallel ▁interface ▁for ▁higher ▁spe eds . ▁G SN ▁co pper ▁c ables ▁are ▁limited ▁to ▁ ▁and ▁fib re ▁opt ic ▁c ables ▁limited ▁to ▁ 1   km . ▁ ▁H IP PI ▁is ▁the ▁first ▁“ near - g ig ab it ” ▁( 0 . 8   G bit / s ) ▁( AN SI ) ▁standard ▁for ▁network ▁data ▁transmission . ▁ ▁It ▁was ▁specifically ▁designed ▁for ▁super comput ers ▁and ▁was ▁never ▁intended ▁for ▁mass ▁market ▁networks ▁such ▁as ▁E ther net . ▁ ▁Many ▁of ▁the ▁features ▁developed ▁for ▁H IP PI ▁are ▁being ▁integrated ▁into ▁such ▁techn ologies ▁as ▁Inf ini B and . ▁ ▁What ▁is ▁remarkable ▁about ▁H IP PI ▁is ▁that ▁it ▁came ▁out ▁when ▁E ther net ▁was ▁still ▁a ▁ 1 0   M bit / s ▁data ▁link ▁and ▁S ON ET ▁at ▁O C - 3 ▁( 1 5 5   M bit / s ) ▁was ▁considered ▁leading ▁edge ▁technology .