So i just got my new motherboard which will replace my previous motherboard that doesn't have usb3.0. The motherboard it a is the Asus M5A78L-M USB 3 MATX motherboard. And i've tried to put it into my Fractal design core 1000 which is a MATX case, and the motherboard when im putting it in is scraping against the top of the case where the Disk drivers go and the motherboard over all is a tight fit. I have heard of other people using the same motherboard and the same case as i am, put the motherboard in with no Hassle. I based my build off a build that gamespot did a while back and it seems like the person who built it had no trouble putting the motherboard into the case.