[SOLVED] Wich graphic card do i need for my third monitor?

Aug 2, 2020
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Hello,
(Sorry for my bad english)
I have a nvidea geforce gtx 1660 with two monitors now. I want to use a third monitor, but my graphic card only have two display ports. I thought a second graphic card would be the cheapest solution, but i dont now wich second graphic card i should buy and how i have to install my third monitor to it...

Is there someone who can help me?