
Are the following mentions coreferent?:
<m> said </m> in RBC Capital Markets downgraded ATI Technologies to sector perform from outperform after Advanced Micro Devices announced its intention to buy the Canadian graphics chip-maker for $ 5.4 billion. RBC analyst Steve Arthur said there is limited upside to the offer unless competing bids are made for ATI. For now, Arthur said AMD's takeover deal, which is expected to close in the fourth quarter, effectively offers his one-year price target of $ 21 now. 
</s>
<m> announced </m> in Advanced Micro Devices announced that it is buying low - power server vendor SeaMicro, a surprise move that puts AMD in the systems business and disrupts Intel by acquiring one of its close partners. AMD will pay US$334 million in cash and stock for SeaMicro, an 80 - employee Silicon Valley startup that has gained attention for building highly dense and power - efficient servers for use in large - scale cloud computing environments. 