AMD reportedly may delay the production of its latest Fusion accelerate processing unit (APU) codenamed Llano from the company's original schedule of the first half 2011 to July of 2011 and mass production is unlikely to start until August or September due to Globalfoundries' lower-than-expected yield rate for its 32nm process, according to sources from motherboard players. In response to the rumor, AMD declined to comment on unannounced products.

AMD has scheduled two platforms for its new APU - Brazos and Sabine. For the Brazos platform, the company is pushing Ontario processors for netbooks and Zacate processor for mainstream notebooks and the entry-level desktop PC market. The processors are manufactured under Taiwan Semiconductor Manufacturing Company's (TSMC's) 40nm process and are already shipping with about 100 related products to be showcased at CES 2011.

On the other hand, the Sabine platform, with the Llano APU, targets the ultra-thin notebook and, mid-range to high-end notebook and desktop PC markets, are scheduled to be manufactured under Globalfoundries' 32nm process. Since Globalfoundries has been reportedly having issues with its 32nm yield rate, and AMD is said to not be willing to take the risk of manufacturing and producing defective products and generating unnecessary costs, rumors that Llano processor will be delayed have recently started to emerge in the IT market.

AMD planned three versions of the Llano APU - quad-core and triple-core versions both under codename Beavercreek, and a dual-core version codenamed Winterpark with a total of seven processors to be launched and paired with the southbridge chipset codenamed Hudson.