Cisco pushes M81KR card saying that there's no reason to use anything else. What about systems with iSCSI storage (ESXi boots from local drive, VMs are on iSCSI storage, no iSCSI boot)? Is there any performance advantages to using BCM57711 card? It has iSCSI TOE, while M81KR does not, isn't this enough of a reason to use BCM57711 for iSCSI environments?