It was just over a year ago that ATI debuted its HD 4000 series of video cards, but it’s rumored that the company will miss its stated one-year refresh cycle by several additional months. The problem, in this case, has nothing to do with the GPU’s design, but is the result of continued 40nm yield problems at TSMC. The Taiwanese fabrication plant has been having trouble with its 40nm process for some time, with some analysts predicting the company’s 40nm yields could be below 30 percent. Those problems have directly