Hawkson wrote:
What about the i5 2300
It's cool 
Where are the bottlenecks in the system?
The videocard. If you want to use madVR, hardware decoder, postprocessing shaders and SVP at the same time you need something like 5700-series or low-middle NV card.
Can you explain how the SVP is best utilized? A better processor or a better GPU?
SVP is always(*) CPU-limited. GPU should be "just enough" and there's no point in buying high-end video for SVP.
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* - but not in your case
The magic word is "OpenCL"
