I have 2 pairs of RAM which I bought in order to setup a new machine but they are incompatible. In order not to waste them, I decided to install one pair to my existing machine but I don't know which combination with existing is the best.
My existing machine has the following motherboard: Gigabyte GA-P67A-UD4-B3
with the following RAM already installed: Corsair Vengeance 8GB - CMZ8GX3M2A1600C8
The two pairs of RAM that I have available are the following:
1) Corsair XMS3 8GB
2) Corsair XMS3 4GB
So which pair would it be better to install?