Can my PSU run a gigabyte GTX 770 via molex plugs?

Jazzcam998

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Mar 31, 2014
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I recently bought a 4GB gigabyte GTX 770 and it smelt like burning when near max load so I switched it off, my PSU is a cheap alpha power ATX-850L, I was planning on upgrading anyway but I thought it was capable of running my GTX 770. Please could you tell me if it should run this card as the shop I took it to said I need a new PSU? Thanks