i have a Evga SR-2 psu rated at 1200w running on my SR-2 + 2x X5550 @ 4.1Ghz and 2x GTX580 classy's.
And i still can oc my classy's without any problem.
If i would do ln˛ on classy then i will have problem with psu i think.
so YES you're in the clear
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