MSI also launches the H170/B150 Enthusiast, Performance and Arsenal GAMING motherboards packed with loads of unique GAMING features to optimize speed, sound and stability through GAMING LAN, Audio Bo... MSI Announces H170 and B150 Based Gaming Series Motherboards
I would have thought 'Gaming' (capitalised as it is a product name) would apply more to the Z170 motherboards, since proper gamers would likely want to use an unlocked CPU and overclock it. I don't see the B150 chipset suitable for such purposes. I guess MSI wanted to make perceivably higher quality versions of these motherboards utilising lower end chipsets, since typically these chipsets are combined with lower end components. I still see 'Gaming' as a bit of a misnomer though from a branding sense. It's good to see though some better quality (at least, as it appears) lower end motherboards coming in though!