Ok all, my computer has been built for around two weeks. I have been really happy with everything so far.
I have a few annoyances, such as my GPU's fan coming on at what I can assume is 100% every 2 minutes. This is not that loud, but it is by far the loudest thing in the system. I'm a little disappointed that I can't use any program to alter the fan speed. I would like to just keep it at 40% all the time I can, but I don't think that Radeon ATI HD 3870's support fan control.
The second issue is a little more worrisome. My PSU is an Antec Earthwatts 500-D that came with my Antec Sonata III. I love the case and the PSU had plenty of hookups for the peripherals I added. However, I have had a weird intermittent buzzing sound coming from the PSU. It is very faint and repeats 4-6 times every 10 seconds. It doesn't happen all the time. Just when my computer has been on for a bit. Should I worry about RMAing this PSU? Or is this normal?