Geforce 460 power supply

after a month of trying to figure out sysyem freezes and multiple upgrades, i finally found out my problem, my computer would sometimes boot
and now it wont with it.
i have a thermaltake 630 watt power supply that says it supports sli,
my issues came after i upgraded my system with the h70 watercooling kit, and then my computer wouldnt boot, i put my ati 4670s in the system and now it runs good.
my question is what power supply would be good to run atleast 2 graphics cards, like the 5770 in the future in crossfire with out any issues,
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More about geforce power supply
  1. Thermaltake 630W PSU is adequate for 5770 GPU (2 of these). You mentioned upgrading your system with H70 watercooling kit then you computer wouldn't boot. I think you have not inserted you 5770 correctly on the PCIe slots or the power cable for your GPU is not plug-in correctly please check them. The 4670 works so the 5770 should also work.
  2. any good 650W PSU will do for 2 HD 5770s or 2 GTX 460s. :-)
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