Has anyone ever played lord of the rings shadow of mordor? That's definitely a GPU melter if I've ever seen on. Disk activity says it takes up to 10 gb of RAM when i checked it. Absolute firestarter.
SOM runs well on a very modest GPU. GTX970 gets you 1440p, ULTRA details. (unless you choose the stupid hires texture pack that adds very little)
Not sure what memory you talk about when you say "10GB" but that sounds like system memory since the game doesn't normally use much more than 3GB of VRAM. (and the system memory the game actually uses is likely closer to 2GB)