Can't use PCI-e 3.0 speed because I don't have an FM2+ CPU

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15 Nov 2014
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Recently I bought an MSI A88XM-E35 motherboard along with an AMD FM2 processor. I was reading through the motherboard manual and I was shocked to see the following statement

"PCI-e 3.0 is only available with FM2+ processors"

Surely enough, the PCI-e 3.0 slot on my board is only running at PCI-e 2.0 speeds. What has the processor got to do with the PCI-e slot? I have a PCI-e 3.0 compatible graphics card, a motherboard with a PCIe-3.0 slot, 8 gigabytes of 1866 ram so why am I restricted by this?

Is there anything I can tweak to get the slot running at full speed?
 
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