I have agtx 750 ti and i put it in my optiplex 780 it says that the pc cant support it
https://www.google.com.kw/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=0CAcQjRxqFQoTCLWAnPze7McCFclbGgodPXwI3g&url=http%3A%2F%2Fwww.misco.co.uk%2Fproduct%2F220556%2FGreenline-Dell-Optiplex-780-Mini-Tower-Intel-Core&psig=AFQjCNGfvZzvZtm07T9Wv19j6AQ14DOLiA&ust=1441983917487101
https://www.google.com.kw/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=0CAcQjRxqFQoTCLWAnPze7McCFclbGgodPXwI3g&url=http%3A%2F%2Fwww.misco.co.uk%2Fproduct%2F220556%2FGreenline-Dell-Optiplex-780-Mini-Tower-Intel-Core&psig=AFQjCNGfvZzvZtm07T9Wv19j6AQ14DOLiA&ust=1441983917487101