que tal si miras este link esta interesante para complementar aun mas y es reciente
http://www.hardware-revolution.com/high-end-gaming-pc/

aqui otros videos complementarios y mas explicativos

http://www.youtube.com/watch?v=axyhXrCaZ90&feature=channel
http://www.youtube.com/watch?v=TVuuL-J3fZM&feature=channel

http://www.youtube.com/watch?v=vGGFwPiFU2g&feature=channel
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http://www.youtube.com/watch?v=WGE_E-gQLmM&feature=channel
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http://www.youtube.com/watch?v=MYNDuoHHG_Q&feature=channel