Simple utility script to generate a table of PCIe bandwidth for various link width configurations and for raw and 75% efficiency

pcie_bw_table

#!/usr/bin/python

def divider():
    print '-'*40

def width_str(width):
    return "x%d" % (width)

gens = [1,2,3]
link_widths = [1,2,4,8,16,24,32]

for gen in gens:
   	divider()
    for width in link_widths:
        raw = (2**gen)*width
        print "Gen %d, %3s: raw: %3d Gbps; 75%s: %3d Gbps" % (gen, width_str(width), raw, '%', raw*0.75)
divider()