Only if you want to run multiple graphics cards, then you would need an SLI capable Z170 board. For a non overclock, single GPU rig, H170 is plenty. B150 is also acceptable, if you do not care about RAID capability. The chipsets themselves don't really impact gaming performance, significantly. The graphics card uses PCI-E lanes, that are on the CPU, not the chipset. The non Z chipsets don't support ram speeds beyond 2133, so that can have some impact, but I don't believe it is enough that you would notice.