By Larry Dignan | September 8, 2011, 10:43am PDT

Summary: Samsung, Nvidia and Microsoft are on tap to show off a Windows 8 quad core tablet next week.

Nvidia has been bubbling with optimism this week and there may be a good reason for it: The company next week is on tap to demonstrate its quad-core Kal-El chip on a Microsoft Windows 8 tablet.

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