Hello everyone, my laptop is an asus gl502vmk so it has a built-in 8gb ram. I checked the built in ram and it's running at 2400mhz. However after buying another ddr4 ram, both of them are running in dual channel but the problem is that it's only running at 2133mhz. Cpuz shows 1064 mhz which is 2133mhz. Any ideas? The installed ram is 2400mhz.