Poor FPS with high-end rig?

[Atlasprime]

I'm suffering from computer shut down atm,but no sign of over heating,very frustrating when there is no obvious problem lol. But I've just ordered some upgrades that will improve my FPS and overall performance.

- CPU: Intel Core i5 4570 (Haswell) 3.2GHz Quad Core CPU with 3.6GHz Turbo enabled
- Motherboard: MSI B85-G43 (Socket 1150) DDR3 Motherboard
- RAM: 8GB 1600MHz Dual Channel DDR3 RAM
- MSI GeForce GTX 670 OC Twin Frozr Power Edition 2048MB with NVIDIA: Splinter Cell Blacklist Game - FREE with NVIDIA GTX 660, 670, 680, 760, 770 & 780 graphics cards ONLY!!

I really do hope these new parts improve this game because it's beautiful to look at.

Certainly sounds like a nice rig. What are you running now?

@Cakeythelie - Currently running at high performance. I am thinking the issue is away from power management.