Attached Link: http://www.brighthub.com/computing/hardware/articles/48391.aspx

I don't own an i5 But It's my understanding Core i5 will recognize the processors as having four core, not 8 as the i7s do, which would greatly diminish render performance compared to an i7 IMHO

See the article at this link for more info. Esp. the part about mutithreading.

 

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