U.S. chipmaker Intel lost on Thursday its challenge against a record 1.06 billion euro ($1.44 billion) European Union fine handed down five years ago, as Europe's second highest court said regulators did not act too harshly. The European Commission in its 2009 decision said Intel tried to thwart rival Advanced Micro Devices (AMD) by giving rebates to PC makers Dell, Hewlett-Packard Co, NEC and Lenovo for buying most of their computer chips from Intel. The EU competition authority said Intel also paid German retail chain Media Saturn Holding to stock only computers with its chips. Judges at the Luxembourg-based General Court said on Thursday they backed the Commission's decision. "The Commission demonstrated to the requisite legal standard that Intel attempted to conceal the anti-competitive nature of its practices and implemented a long term comprehensive strategy to foreclose AMD from the strategically most important sales channels," the court said in a near 300-page decision.