I am looking to update some hardware and am trying to evaluate what performance 
difference in QGis might be gained from the options currently on offer from 
Apple.  I have two specific questions:

- Does QGis have GPU acceleration features that leave the graphics card to 
perform certain calculations, instead of the CPU?

- Does QGis take advantage of multiple cores and / or multithreaded rendering?

I am trying to understand if it would be worth my while investing in a 15" 
MacBookPro (with quad core CPU and discreet graphics card) over a 13" MacBook 
Pro (with dual core CPU and integrated graphics).

Very grateful for any advice.
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