India, Aug. 5 -- Advanced Micro Devices reported better-than-expected second-quarter results, but investors appeared disappointed because they were expecting an even stronger performance from the chipmaker. AMD shares fell 8.5% in premarket trading on Wednesday, according to the report.

AMD reported $11.5 billion in second-quarter revenue, up 50% from a year earlier. Wall Street had expected revenue of about $11.3 billion. The company also reported adjusted earnings of $1.66 per share, beating the $1.62 per-share estimate.

Despite beating estimates, analysts said AMD's results did not give investors enough reason to push the stock higher. William Blair analyst Sebastien Naji said AMD still had "much to prove" and that the company's limi...