Honestly man, ANY computer you buy over $500 will definitely be able to do everything you need and run D3 on at least med graphics. If it comes with any graphics card whatsover you should be able to handle ultra. I say this because laptop resolution is usually low (versus a 1080p desktop monitor). Just get an i3/i5, 4gb+ ram, and something decent for graphics (ati/nvidia and youre golden).
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