Which desktop is better? (links in description)?

http://www.walmart.com/ip/45087379?reviews_limit=7&

http://www.walmart.com/ip/40594670?reviews_limit=7&

I'm looking to buy a gaming desktop but my budget is 300-400$. Not sure if I should buy a refurbished one or not. I know that won't buy much performance wise but anything is better than my notebook laptop that gets 10 fps in minecraft!

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