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Is my gtx 770 is geniune?

Is my gtx 770 is geniune?
« on: January 18, 2014, 11:28:51 am »
So i had a gtx 770 4b and bought a new one to sli.
But sli wont work.
Do both of video cards are the same? why i cant use sli?

First card:
http://gpuz.techpowerup.com/14/01/15/a2r.png

Second:
http://gpuz.techpowerup.com/14/01/15/99s.png