Which computer would be better for streaming minecraft?

I'm looking at a new gaming computer and I DO NOT want to build my own. I would just like opinions on which of these computer specs would be better for streaming minecraft.

http://m.tigerdirect.com/products/8529717
Or

http://m.bestbuy.com/...cat0501000

Added (1). The tigerdirect one has Radeon hd 7850 gpu. The bestbuy has GeForce gt 640

The second one is better from bestbuy since it has 16GB of RAM. That's more memory than 8GB.

I agree with the second one.

While the first one does have an 8 core (which has more cores than a 6 core obviously), the second one with the 16GB of ram will handle multi-tasking much better.
( though if I knew what GPU (graphics card) was in the 8 core from tiger direct, I could have made a more informed decision).

The second one with the first ones GPU the second one has a terrible GPU