if amd a6 5400k can use vga hd 7570 gddr5 or 7670?
I'm assuming that this is about duel graphics, so, yes both of those GPU's will work.
See the section under FAQ's... http://www.cpu-world.com/CPUs/Bulldozer/AMD-A6-Series%20A6-5400K.html
For dual graphics? Not officially recommended because the GPUs are not closely matched, but yes it should work.
as neon stated: dont use DualGraphics
even a RX560 4G will wipe the floor with them!
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