Mlnx_ofed_esxi_driver & Mlnx-native-esxi driver both contains net_rdma (CX-3) nmlx5_rdma (CX-4/5 modules so basically you can get good performance
Upon proper setting of HCA & switch parameters you can get optimum performance and get the benefit of fast RDMA connection & bandwidth when using-VMware
There are some drivers/fw vs Mellanox adapters compatibilty, but in close RDMA id fisible
suggesting you approach Mellanox release-notes & user-mananas on our website to find the compatible sw/hw
http://www.mellanox.com/page/products_dyn?product_family=29 http://www.mellanox.com/page/products_dyn?product_family=29