Two way 780 ti 5760 cuda cores

Jun 4, 2018
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I got a 780 ti with 2880 cuda core and I have the posibility to buy another 780 ti very cheap. In this case im gonna have two 780 ti with the double cuda cores therefore 5760 cuda cores. What can you tell me about the performance? In tha case 3 gb vram is enough? I got sentey 1050 watts 80 plus gold with 87 amperes.