How do PCI-E lane limits work in a CPU?

JacoFett

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Feb 13, 2016
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Say the 5820X supports PCI-Express lanes and the 5960X supports 40 lanes. How is this limit determined?
 
Solution
I'm sure both CPUs are made of the same silicon, Intel just disables some on the 5820X for market segmentation, and discounts it.

Very much like how an FX-4300 has 8 cores, but AMD just disables 4 of them.