I have an optiplex gx620 I’m trying to get going again just for fun and it has a pentium d 940 processor in it and I’m trying to find out what I can upgrade to. The computer shop said I can run a core 2 duo e6700 in it but every forum I see say that you can’t run core processors in that. Would a pentium gold processor be compatible? It’s the foxcon LS-36 motherboard