Since the arrival of the IBM RAD6000 in the 2000s and the RAD750 in the 2010s , using the NSSC-1 has become unthinkable .
Head entity: rad750 Q1531146 12
Tail entity: ibm rad6000 Q1653128 5 6
Relation (head \u2192 tail): P155
Inverse relation (tail \u2192 head): P156