Shares in Intel rose as much as 4.1 percent to a more than 15-year high on the back of the news which indicates the PC depression might be finally coming to an end.

Sales in the company's PC business declined three percent to $7.3 billion in the latest quarter. The unit includes sales of chips for mobile phones and tablets. But Intel said that the green shoots of recovery are here.

Firstly HP  said last month that revenue in its computer business rose 7.5 percent in the third quarter from the second as sales of notebooks improved. At the time FBN Securities analyst Shebly Seyrafi said commentary from Intel and HP suggested that PCs were "not as dead as people were thinking".

Research firm IDC said in July global PC shipments fell less than expected in the second quarter, helped by strength in the United States.

Intel now says it expected third-quarter revenue to be $15.6 billion, plus or minus $300 million, compared with its prior forecast of $14.9 billion, plus or minus $500 million.

That implies the highest-ever quarterly revenue for Intel. Wall Street analysts on average were expecting $14.90 billion.

RBC Capital Markets analyst Amit Daryanani said the pre-announcement was a good first step to the PC story stabilising at Intel. Shares of rival AMD were up about one percent, while those of Micron Technology Inc (MU.O) and HP were marginally higher. Shares in Intel had shot  up 2.6 percent at $37.53