Woha, a lot of replies in a short period of time.
Since MineCraft is still single threaded going for a CPU with the highest single thread performance possible. A "k" series processor will be of no benefit with the h67 board since h67 offers no overclocking what so ever. The ram right now is pretty overkill, unless you plan to host over 30 people on a single server at a time I see no reason to have 16gb of ram for a small server build.
Other than that this build looks good. Just make sure you seal up the case really well and get good fans and dust filters, that will be the biggest ailment of a minecraft server like this.
Truly I'd just host in the cloud, I have a quad core Xenon with 8gb ram and perfect internet for free right now (beta user), and even when they start charging for the service it will be less expensive than purchasing all of the hardware, paying for power consumption and removing the minimal amount of heat that the server will produce. Also with a cloud server you can simply audit from anywhere and the hardware is monitored 24/7.
I'd go for cloud hosting if you're this serious.
You should look at the most recent build, and let me know if you think that one would work better... I have always felt that a server in front of you is many times more powerful than one that isn't, simply because of the ease of access (I have had nothing but trouble with remote servers)... Also, looking at hosting services for dedicated Minecraft servers, they were not at all cost efficient compared to building one (I am doing this not for myself but for a cross-college club, I should note)... We have over 200 players that want slots, and in just 1 year that ends up costing more than the budget of this server! (We don't pay for internet or power since this will live at a school, so that could be making the difference)!
if your going to go with a 2500k and a z68 board, it might be worth getting a good/high-end cooler for overclocking but IMO with a i5 2500 and a z68/h67 a stock cooler should work fine all the way up to a high end cooler. Ive ran in the past a 2500k with a stock cooler at stock speeds for awhile and everything worked out fine
I would like to OC as much as possible, but the H60 is about the best I can do with the budget im given... I know an H80 would fit but its too much money, unless someone knows how I could lower current costs for parts?
i would say stick with 16gb of ram.. if your rlying thinking you might get 30 ppl on at once or have 2 or 3 servers set up you will need the ram and the cores... if your gonna get a z board grab the k cpu so you can oc it, but if not its not ahuge deal. You wont notice to much diffrence in game play as its a simple server to run. The ssd size of 64gb is good. You may want to pick up a second one at one point for backups, as having a server running for a year with 30 players can and will eat up file size, but that is your call.
I am getting concerned over how conflicted people on this thread alone are over the RAM amount. Not really knowing what the peak load on the server doesnt help, but is 16GB over 8GB needed if that number is about 50? About 75? 100?
I do intend to add storage over time, but that's in the future; for now, 60GB is IMO plenty.
Been hosting MC servers for almost 2 years now
The build you posted should work fine, just dont go above 100 players.
What is the limiting factor? Can you please give me an idea as to how many resources each player needs? Each server? That would make it immeasurably easier to shop for parts...