Was about to buy a 390 but then I noticed

pigstriker

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Jul 6, 2014
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that it said pci express 3.0. My motherboard only has pci express 2.0. Does this mean I need to get a new motherboard to use this?
 
Solution
No they are backwards compatible and virtually no loss in speed between the to lane speeds.
https://www.pugetsystems.com/labs/articles/Impact-of-PCI-E-Speed-on-Gaming-Performance-518/

Impact of PCI-E Speed on Gaming Performance