I've seen things where people tried to run 32GB and had problems - generally with DRAM faster than the CPU (the MC (memory controller)) could handle, or with an early BIOS and didn't want to update BIOS or make adjustments, but nothing like a physical problem - i.e. it can't run 32GB, as it can, have run 2400 sticks on the Gryphon (and it's rated to 1866)