I got a HP Pavilion dv6 Notebook PC and have experienced a lot of lag. It's a relative expensive PC which I think should run even WoW on the highest graphics, but it doesn't..

-------------------Specs---------------------
Intel(R) Core(TM) i7 CPU Q720 @ 1.60GHz (8 CPUs), ~1.6GHz
4096MB RAM
NVIDIA GeForce GT 230M
Integrated RAMDAC

Well that's taken right out from dxdiag. If there's something more I'll have to provide just tell me.

I got better specs than other computers I've checked and they run at least wow smoothly, so something is terrible wrong, not even Minecraft runs without lag on my computer.