So I bought a cheapy Skylake motherboard and CPU. Re-used my current RAM and GPU.
I had 4x4GB RAM, which was the max that my old Shuttle could take. I've run a memtest on it and found one stick was fucked. So currently on 12GB.
Is it more important that I get a matched pair (so get 2x 8GB sticks and bag off a working 4GB one) or since I'm not going for bleeding-edge every-fps-is-precious, can I just put a single 8GB in the empty slot and end up with 20GB?