I'm still trying to work out whether only dual channel RAM means 64GB RAM is the limit, or do different mobo chipsets support actually support quad-channel? Ki

I'm still trying to work out whether only dual channel RAM means 64GB RAM is the limit, or do different mobo chipsets support actually support quad-channel? Kind of a deal breaker (for bioinformatics work) if I can't go over 100GB RAM, which is really annoying given those cheap threads.