The Santa Clara, California, chipmaker said revenue for the April to June period was $12.8 billion. That was down 5 percent from a year ago and just below the company's projections and analyst expectations of $12.9 billion, as polled by FactSet.
Net income for the quarter was $2 billion, or 39 cents per share. That was down 29 percent from a year ago.
Intel shares fell $1, or 4.2 percent, to $23.15 in extended trading, after the release of the results.
For the third quarter, Intel expects revenue of $13.5 billion, plus or minus $500 million. Analysts were expecting $13.7 billion.
Worldwide shipments of personal computers fell 11 percent in the April-June period, according to data from research firms Gartner and IDC, as people continued to migrate to tablets and other mobile devices. It's the fifth consecutive quarter of decline, making it the longest slump in PC history, according to Gartner. Previous sales declines were related to recessions; this is the first time the PC is yielding to new devices.
Intel revealed a notable win in the quarter, as it got one of its chips into an Android-based Samsung tablet, replacing a chip based on technology from Britain's ARM Holdings PLC.
Intel named Krzanich, formerly the chief operating officer, to the CEO post in May. He replaced Paul Otellini, who surprised observers in November when he announced his intention to retire.