Intel Corp posted first-quarter revenue of $12.9 billion and net earnings of $2.7 billion, or 53 cents a share, as the personal computer industry wrestles with a shift toward tablets and other mobile gadgets.

The world's largest chipmaker estimated second-quarter revenue of $13.6 billion, plus or minus $500 million. Analysts had expected Intel to post $12.84 billion in revenue for the first quarter and forecast $13.45 billion for the current quarter, according to Thomson Reuters I/B/E/S.

(Reporting By Noel Randewich; Editing by Richard Chang)