Capture videoin without latency

hello guys, im trying to make a capture from the input of another computer to show it in vvvv with the videoin node.
i want to know what kind of hardware i need to solve this without latency or the minimun that i can get so the input of the video of the other computer its sync with the other, any suggestions? what capture card should i use, … or maybe there i other way?? thanks to all