From the few second-generation AMD B450 and X470 motherboards we have tested, the majority have been refreshed models of pre-existing boards. Over time, the vendors have had the opportunity to make minor tweaks and upgrades to keep ahead of current technological advances and inevitable design choices. MSI has tried to tick both boxes with the new B450 Tomahawk which comes with an extended CPU heatsink, USB 3.1 Gen2 support and RGB LEDs.