This is the danger of bringing in the original tri-core concept, they are now disabling otherwise functional silicon as yields have improved. This makes for an expensive way to service a new market.
There no way that's happening, they are just 945 that didn't met the specs, either by a lot, no functional core, or by just a detail, hence the 4 cores 3.8ghz overclock with one cpu, and 4 cores at 1ghz that fail prime with another one.
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