The company slashed research and development expenses during the quarter and lowered its selling, general and administrative expenses by as much as $177 million, boosting operating profits to $325 million from an operating loss of $335 million in the fiscal 2006 fourth quarter.

Revenue in the recently ended quarter was $3.84 billion, largely unchanged from the year-ago quarter when the company reported revenue of $3.83 billion. Revenue for the full fiscal year rose 6 percent, to $13.8 billion from $13.1 billion in fiscal 2006

Sun Microsystems reported fiscal 2007 net income of $473 million, or 13 cents per share, compared with a net loss of $864 million, or 25 cents per share, in fiscal 2006.