What is Bottle-necking this game?

Supreme commander forged alliance is the game:

Supreme Commander Forged Alliance Download Minimum System Requirements

Microsoft® Windows® XP Service Pack 2, Microsoft® Windows® Vista
1.8 GHz processor
512 MB RAM
8 GB available hard drive space
128 MB video RAM or greater, with DirectX 9 Vertex Shader / Pixel Shader 2.0 support (Nvidia 6x00 or better)
Sound card, speakers or headphones
Broadband internet connection (DSL/Cable)

Supreme Commander Forged Alliance Download Recommended System Requirements

3.0 GHz Intel or equivalent AMD processor or better
1 GB RAM or better
8 GB available hard drive space
256 MB video RAM, with DirectX 9 Vertex Shader / Pixel Shader 2.0 support (Nvidia 6800 or better)
Internet connection with Cable/DSL speeds

My Specs are on my sig

I'd say pretty much everything, no offense.

However you're gpu probably has the biggest impact.

Graphics I would say, followed most probably by memory