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How to calculate the QuickPath Interconnect (QPI) bandwidth?

ng flag
MWB

For Xeon E5-2697 v2, Intel lists:

Bus Speed = 8 GT/s

# of QPI Links = 2

According to Wikipedia, one must know the QPI frequency and link width to calculate the QPI bandwidth, but these don't seem to be listed here. How to calculate it then?

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ng flag
MWB

I finally found an authoritative-looking paper (NASA- and SGI-affiliated authors) that explains it:

The total bandwidth is 8 GT/s * 2 links * 2 bytes per transfer = 32 GB/s in each direction, for a total of 64 GB/s.

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