I have mixed the ram sticks and they work together on my PC, with the other 1600 MHz ram sticks clocked down to 1066 MHz. My question is simply which would be better for just gaming/occasional video editing on Sony Vegas?
List your full system spec and we might be able to answer.
Intel Core i5-3570 @ 3.4 GHz
MSI GeForce GTX 1050 Ti 4GB
OEM HP motherboard (was an office PC, upgraded it as a budget gaming PC)
Windows 10 64 bit.
I don't think the other stuff matters like HDD and all
I'd rather take the lesser amount of faster RAM than to have more with the faster set clocked lower than it should be. Mixing RAM isn't always a win or even advisable.