And the gpu is the key component to upgrade? Considering I have i7 8 gb. How many more resolution options will I get with like say a 4 gb gpu?
You might check the official starcraft2 forums for the latest impressions but my AMD 8350 cpu with 7870 vid card runs Legacy of the Void fine, not great at 1080p. SC2 is not a well coded game and often brings high end cpus to their knees.