Can i run 5670 and 3650 in a crossfire? will it increase my performance?
for crossfiring you need two gfx cards in the same number series. for example, you can cf a 6850 with a 6870 (both belong to 68xx series), the 6870 will match the 6850's speed. but you cannot cf a 5670 with a 3650. besides, crossfiring two entry level cards isn't beneficial. read tom's article on microstuttering for more information.
Can i run 5670 and 3650 in a crossfire? will it increase my performance?
for crossfiring you need two gfx cards in the same number series. for example, you can cf a 6850 with a 6870 (both belong to 68xx series), the 6870 will match the 6850's speed. but you cannot cf a 5670 with a 3650. besides, crossfiring two entry level cards isn't beneficial. read tom's article on microstuttering for more information.