Mday beat me to it. While an overall strategy like Intel's (media blitz) raises brand awareness among consumers, the focus group for AMD is comprised of OEMs and corporate users. While AMD has done well with OEMs, Compaq in particular, and is selling reasonably well in the retail sector, they NEED to start selling systems to businesses, which will upgrade their computers at regular intervals even if the overall economy is not that rosy, unlike consumers who will shuffle along with their current PCs during a downturn. The profit margin for corporate contracts is higher also while the retail sector tends to be cutthroat with tiny profit figures.
AMD does need more marketing, but it should not be aimed at consumers.