I'm building a computer, are these all compatiable?

Everything looks ok to me, but I might suggest that you drop the Mhz frequency on the RAM since the faster RAM becomes the more unstable the system can be. Drop the Mhz frequency down a bit and I think you will have a more stable system. The other thing is, do you really REALLY need to have that tiny 10,000 RPM hard disk? Wouldn't you rather have more storage space? I would. I just think the extra little boost in speed is a big waste of money. Sure, you are going to shave a few seconds off of booting. Sure, your programs will execute just a bit faster - is that worth spending all that extra money on such a tiny volume of storage? I would rather buy a 1 Teribyte drive at 7200 RPM myself and get plenty of storage. Those are my comments = PS, you will need a cpu cooler/heatsink and some thermal paste.