Since I’m swimming in QSFP switch ports at home, I’m curious about what the lowest-power NICs are that use QSFP ports of any speed — QSFP+4x 10 Gb lanes, for 40 Gb Ethernet. , QSFP284x 25 Gb lanes. , QSFP564x 50 Gb lanes. , etc. I already determined that adding a ConnectX-5 to one of my servers adds 13-19W, depending on which optics are in use. I decided to do a bit of research to see if there were any lower-power options available for cases where I want more bandwidth than I can get fr...
