BIOSTAR Adds Micro-ATX RACING B450GT3 Motherboard for AMD AM4 1st and 2nd Generation Ryzen Processors BIOSTAR adds a micro-ATX RACING B450GT3 motherboard featuring the newly released B450 chipset for mid-ranged motherboards that support the first and second generation AMD Ryzen processors. The BIOSTAR RACING B450GT3 is packed August 4, 2018 News