Should be... What's the 12V amperage rating on the PSU?
Also, do you have the necessary PCI-E 6-pin power cable, or two available 4-pin MOLEX connectors available to use a 2 MOLEX-to-6pin PCI-E adapter?
the psu specifications is a bit complicated, i do not quite understand
AC Input = 100-240 8A 50 - 60Hz
DC Input = +5V +3.3V +12V1 +12V2 -12V +5VSB
Max Output Current = 25A 25A 18A 18A 0.3A 2.5A
Max Combine Power = 150W 432W 3.6W 12.5W
Total Power = 500W