Wednesday, September 22, 2010

Intel's upgradable processor: good sense or utter catastrophe?

Intel's upgradable processor: good sense or utter catastrophe?: "Intel is about to experiment with a new concept in mass-market processors with its forthcoming Pentium G6951 CPU: upgradability."


Instead, the company designs a few processors that can do everything ("real" variations include core count, presence of QPI connections, number of memory channels, and a few other things), and then selectively disables features. Sometimes the decision is made for Intel—a chip might have a manufacturing defect that limits the amount of cache it can use, and not all chips can run at the same frequency within a given power envelope—but a lot of the time, the company is disabling functional hardware. For example, every Pentium G6950 processor has the hardware to do hyperthreading. It's just that it's been permanently disabled at the factory, because Intel's bean-counters have decided that that particular grade of processor won't have hyperthreading

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