I have a silly question. But first the situation:
My rig has an i5 3570k, which has the built in Intel 4000 GPU. Currently I have it disabled in the BIOS because I have an MSI GTX 770.
My desktop is stretched across two 24" monitors - both driven by GTX 770.
When I game, I only use one of these monitors - the left. While gaming, the right monitor is a static half of my desktop, with whatever I had open on it before I started the game.
So here's the silly question. If I activate the Intel GPU and use it to drive the right monitor, will I gain a bit of VRAM and FPS for my game on the left? Enough to be noticeable?