I've been trying to setup a list of components for "the best MC server hardware that money can buy" but need someone to discuss with. Since Minecraft is single threaded, we are a bit limited in the kind of hardware (CPU/Mobo) we can build with. There is unfortunately no direct benefit for Minecraft from multiple cores or processors. So let's start with the CPU. According to this list http://www.cpubenchmark.net/singleThread.html this CPU would be the best choic; Intel Xeon E3-1290v2 3,7GHz (or Intel Core i7-3770K @ 3.50GHz which is a lot more bang for the buck). But they are using the older Socket 1155, which does not support more than 32GB of RAM. A quite normal number I've seen, is that you expect a player to use 75-100mb RAM, so 32GB would allow about 350 players (+/- 50 players) online at the same time. The question is, would those CPU's handle it easily or run close to 100%? The best possible Minecraft CPU with the new 2011 Socket is this one, Intel Core i7-3960X @ 3.30GHz (or Intel Xeon E5-1620 @ 3.60GHz for less cash) which does support up to 512GB of RAM (64 GB for the E5-1620). When do you guys experience that RAM vs CPU is the breakpoint?