Seems like I might need a new graphics card. (and possibly CPU!)

Currently I am running Intel Core2 Quad 2.66GHz and a Radeon HD4730.

Can I get some recommendations for a used graphics card around £100? Please note I hate noise from fans!

I gather some cards are better at OpenGL and some at DirectX etc.. I have been told for example to run SolidWorks you need a good OpenGL card but I note Fusion360 is running DirectX.