CWmike writes "An offshore AMD foundry is having trouble ramping up production of a new 40-nanometer GPU, forcing PC makers to delay shipments of desktop and laptop computers, AMD confirmed today. TSMC is struggling to get up to speed manufacturing AMD's 5800 series, 40-nm GPUs, according to Jim McGregor, an analyst at In-Stat. He added that the foundry is in full production, but so far yields are below expectation. Matt Davis, a spokesman for AMD, confirmed that TSMC is having issues with production of the chips. He added that it's not clear how far behind the foundry is on production expectations. 'The design is sound. It's just a matter of trying to get TSMC to a point where they can yield. They're feeling the manufacturing crunch,' said Davis. 'We're a little bit under yield but we're working back into a manufacturing schedule we want for these parts. TSMC can only kick them out so fast at this point.' He said that PC vendors are being affected but declined to say how many vendors are feeling the pinch or which ones. 'It's the end of the whip,' he added. '[The vendors] are going to have a hard time.'" A post at Anandtech suggests we'll see price hikes for the 5800-series Radeons until this situation sorts itself out.