Assuming you meant heat and not hear. Upgrading your cooling should not lower the total heat output of your PC (it’s more likely to increase it). The only exception is if you somehow send the heat out of the room, but that would be a crazy complicated setup. Your PC always turn the same amount of electric energy into heat energy and dissipate it in the room. if it’s more efficient it will cool down the components more, possibly giving them the opportunity to increase frequency further, which increase the power draw, which is turn into more heat that is dissipated in the room.
I have no experience about what you are trying to achieve, but rdma and related technologies (infiniband, qlogic, sr-iov, ROCE) is not it. These are network technologies that permit high bandwidth/low latency data transfer between hosts. Most of these bypass the IP stack entirely.
Infiniband is a network stack that enable RDMA, it’s only vendor is now NVIDIA which acquired mellanox. Qlogic was another vendor, but it got acquired by Intel that tried to market it as Omnipath, but it was spinned off to Cornelis network.
Sr-iov is a way to share an infiniband card to a virtual machine on the same host.
ROCE is an implementation of the rdma software stack over ethernet instead of infiniband.