On paper at least, the integrated graphics on your 6400k seem to be about equal to the 710. So for the purposes of improving performance I don't think it's worth spending money on a 710. I'd suggest downloading the Maya demo and running it on your computer to see if performance is acceptable. I saw on the Maya site a list of supported videocards and it included Quadro and Firepro cards but also regular videocards. The problem is none of them were the low end type, like a GT 710. The lowest of the 7xx series was a 760. So I suggest maybe buying a used Quadro or Firepro instead.