Motherboards are, if anything, probably going to do the opposite — motherboard prices aren’t rising because of increased demand. Memory prices rose because of increased demand. Prices for things that use memory also rose. Motherboard sales are falling because of decreased demand; motherboards don’t use a ton of memory, and fewer people need a new motherboard because the components that they’d plug into the motherboard cost enough to cause them to defer upgrading or buying a new PC. You might see price cuts, if anything.