BUZZ-Advanced Micro Devices Inc: Bigger-than-expected Q1 loss
** Chipmaker's shares down 8.7 pct at $2.62 in extended trade
** Company reports bigger-than-expected Q1 adjusted loss; to exit its dense server system business, effective immediately
** Incurs $75 million charge in Q1 and additional $12 million charge related to restructuring plan last year
** Up to Thursday's close, stock had fallen more than 23 pct in the past 12 months
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