If you really do think you need 64GB of RAM, good luck to you. To do that, you'll need a good quality motherboard from a reputable manufacturer with a great warranty, as from what I've seen and heard, defect rates are high.
If you think you need 128GB, then you'll need to build on a server motherboard. Nothing wrong with this, if that's what you really need. But for advice on that, you'll have to go an check a server-specific forum, as from what I understand, memory in servers is a bit different than in the consumer space. They're much more finicky about what they will and won't accept for super-high memory configurations.
I know this probably isn't what you want to hear, but if I were you, I'd get a good consumer 2011 socket motherboard that's rated to use 64GB, and then get RAM from a very reputable company, like Corsair or someone similar. Get 32GB and see if that alleviates your issues. If not, get more.