THERE HAVE BEEN back channel stories floating around for weeks about tri-core AMD CPUs, but nothing solid. The rumours have been picking up more steam, and now they are finally solid: AMD is doing a three-core chip.
The first thing that comes to mind is bad yields, but I am told this is not the case for the three-core product lines. There may be some salvage done on bad quads, but that is not the overriding reason to do this.
The main reason is marketing, it seems AMD is learning from ATI. Most non-top SKU GPUs are simply top SKU die with features turned off, and if you look at the success of people unlocking that, you will see that it is far more than salvage.
http://theinquirer.net/?article=42369
Sorry if this has been posted, havent seen it.
I guess its to cover the gap between 2-4 and to secure mid range market.
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