the red pcb that msi is using r indeed a better pcb with more layer thus eliminating (decrease) vdrop... (well, ther's no way anyone can eliminate vdroooop anyway)... same goes to galaxy (blue pcb) which is famous for using more layer pcd for their gfx...

note: not all red pcd r same quality, so dun buy a mobo or gpu due to the color... hahahaha...