5 Replies Latest reply: Jan 26, 2013 8:14 AM by Grant Bennet-Alder
John_Law Level 1 (0 points)


In trying to run 3 monitors on a mac pro 4.1, I have recently bought a Radeon 5870 card from Apple as advised by a 'genius' at the local apple store.

This setup does not work, even giving worse performance than the 4770 with 2 of the monitors (NEC 30" & Apple cinema 23").


Both these cards require 2 power connectors so adding another doesn't seem possible, however the 5770 uses only 1, so is it possible to run two 5770 and bring my spare Apple 23" in to use for a 3 monitor desktop? I have tried lots of permutations with both mountain lion and snow leopard, zapped pram, reset etc to no avail.


Any advice welcome!




John Law

Bath UK