Better in which way? The hashrates must be a way lower.
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I am using stock settings, 1060s @ ~18MH/s, 480 8GB @ ~24MH/s, 480 4GB ~21MH/s

Ended up mixing 1060s and 480s to accommodate 5 cards each on four rigs 750 Watts supplies.

2 x 1060 + 3 x 480 in two rigs and 3 x 480 + 2 x 1060 in other two.

Comparing the power consumption, card cost and other factors, I would not mind losing 3 MH/s per card over 4 GB 480s for a cooler, power efficient and far more stable system.