What is the relative cost between 4 x 10 G and 40G?

• Not the same if 40Gbase-SR4 is defined to
go 100 meters while 10GBase-SR must
traverse 300 m
– Estimates are 10-50% less cost at 100 meters
Cost isn’t everything. Users will buy 40GE
over 4x10GE because of:
• Ease of Management – it’s one port versus
four
• Port Density – the QSFP is a factor of 3
denser than the 4 SFP+
• Cable Management – One ribbon is easier
to manage than 4 duplex patchcords

SFP DWDM transceiver