Ok so i'm thinking of upgrading my computer for OMSI, currently got a 2.4ghz quad core processor 3GB of ram and an 8800GTS 640mb graphics card. The game runs decently but only on low settings, i'd like to play it on higher settings with more reflections etc... At the same time though I don't want to pay too much money. What graphics card could I get for less than £100 that would be a good improvement over an 8800GTS and would upgrading my ram to 4GB actually make a difference or is it the graphics card that would make the difference?