I want to buy a 00D9692 IBM Mellanox ConnectX-3 EN Dual Port 10Gigabit CX312A LP CX3.

According to the Mellanox ConnectX-3 docs the SFP+ ports can provide a maximum of 1 watt per port.

An RJ45 module consumes around 3 watts, according to ServeTheHome.

Does that mean it’s impossible to use this NIC with RJ45 modules?

Because I want to use this card with my ethernet switch (don’t wanna upgrade yet to SFP+).

Or is there maybe another solution to connect my ethernet switch to the SFP+ port of this NIC?

If these modules still work. Which one should I choose? Because I’m a bit comfused, I was that you can get IBM and Mellanox. But this card is both?

- 10Gtek € 50

- FS IBM € 85

- FS Mellanox € 85