Hello Naresh ,
Thanks for your answer.
There are 2 CPU in the server.
When I ask to the HP support, thay said me that the fans throttle up by design because it's not an HP card.
So I bought one of the recommanded HP card. And now, you say me that because it needs more power the fans will be always high ?
I'm not sure to understand: in fact HP or not HP card it's the same result ?