for real low latency sample slave ability you need to have good equipment.
onboard GB network wont cut it unless working @ 512 buffer is ok for you.
you might be able to get away with adding a good (intel) 1GB network card per system and buying a very good switch.
for lowest latency you would want 10GBe cards and switch… now you are talking well over $1000 just for 3 cards never mind the switch.
i do a lot of Vienna systems
FYI anything with the word “green” in it no way… the last thing you want is a switch attempting any power saving.
even with the added intel cards you would have to go into the device manager then power management of the cards and make sure all that crap is off…