I haven't read that article, but I can give a probable explanation to why he says it is "rare." Slot 1 processors have higher production costs than FCPGA processors, which usually ends up in a higher price for the consumer. Also, the technology is changing to that FCPGA processors will "take over," and Slot 1 processors are trying to be phased out. This results in higher demand for FCPGA processors, and on top of that, most if not all modern boards for Intel processors support FCPGA processors, not Slot 1. The higher demand would cause Intel to make more FCPGA than Slot 1 processors.
Rob
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