Tested the power consumption of a couple of 40Gb modules mentioned in this thread.
PMD-USB measures only the PCIE slot and does not account for PSU losses before it.
The modules were tested without active link / load but had LC UPC Duplex OM3 -cable physically connected.
Gear used:
- ElmorLabs PMD-USB Power Measurement Board
- ElmorLabs PMD-AD PCIE Power Measurement Board
- Supermicro X10SLL-F booted into Ubuntu 24.04 installation media desktop
NICs tested:
- Mellanox ConnectX-4 EN 50GbE single-port QSFP28 (MCX413A-GCAT)
- Intel X710-DA2 (mfg 10/2022)
Results:
| Voltage | Current | Power |
MCX413A-GCAT only | 11.94 V | 0.5 A | 5.97 W |
MCX413A-GCAT with KAIAM XQX2502 | 11.94 V | 0.6 A | 7.164 W |
MCX413A-GCAT with Juniper JNP-QSFP-40G-LX4 | 11.93 V | 0.9 A | 10.737 W |
Intel X710-DA2 only | 12 V | 0.1 A | 1.2 W |
Chelsio T580-LP-CR only | 11.95 V | 0.8 A | 9.56 W |
Intel X710-T2L only | 12 V | 0.2 A | 2.4 W |
Intel X710-T2L with 1x 10Gb copper connected | 11.98 V | 0.3 A | 3.594 W |
edit: Added Intel X710-DA2
edit: Added Chelsio T580-LP-CR, Intel X710-T2L