Need Help Choosing Between 2 Builds

I have put together 2 builds (1 AMD & 1 Intel option) with about a $400 budget, but I'm not sure which one would be better for gaming. I open to any changes in parts, but $420 is the maximum budget.



I was told by a friend of mine that the AM3+ socket is backwards compatible with the AM3 socket, though I'm not entirely sure. If anyone has more info on that matter, I'd appreciate the input.

AMD sockets are backwards and fowards compatible.