|You'll need a different psu with...|
"Minimum of a 450 Watt power supply.
(Minimum recommended power supply with +12 Volt current rating of 24 Amps.)
Two available 6-pin PCI-E power dongles"
The psu you have listed has only one pci-e dongle and 28a on the +12v rail is cutting it too close. You still have to power that other stuff. I'd consider this one with 46a on the +12v rail and it has 2 6pin connectors...