I asked my friend last week about memory. I asked him if it's ok if I can mix two different RAM sizes and frequencies in my motherboard. He answered NO because it can cause damage or burn to my memory and every gold contacts in the memory has its own voltage. He said also that the gold contacts will turn to black. Not all contacts but some contacts will turn black color it's because mixing two different sizes and frequencies can cause burn to my memory.
1. Is it true that mixing two different sizes and frequencies can cause damage or burn to my memory? and Why?
2. Two different RAM sizes and frequencies are not advisable?
1.) Mixing RAM sizes cannot damage memory. Mixing RAM rated speeds is unlikely to damage memory, because the entire memory bus will slow down to the speed of the slowest module.
2.) Two RAM sizes is OK, but if you're trying to run dual-channel mode, you'd need a pair of each size. Two RAM speeds can be done, but causes the faster memory to run slower.