Meu pc virar com uma AMD R9 270 2gb eu posso adicionar uma AMD R9 380 8gb para CROSSFIRE ??
No, for crossfire to work correctly it requires two card of same (equal) specifications.
Otherwise it will default to the lower spec card.
Some have said you can crossfire R9 2xx with R93xx(modify drivers?),seems a waste of time and money.
thank you more I read here on the site even if some plates type R9 380 8gb Non prescisa of crossfire cable if it will not prescisa as works Oltra R9 380?
Sorry, I do not understand the question. What is Oltra ?.
R9 380 is 2Gb or 4Gb (no 8Gb that I can find).
They do not need a crossfire cable, they share/transfer info with the PCIE lanes on modern Motherboards.
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