AzDan replied: "1U rack mounted servers can be purchased in parts, just like any PC system, and assembled to your present needs. I have searched for a great 1u box for a good price, and have found that Newegg.com does have good deals, on pretty good hardware. I would recommend to check them out, as you can grab a 1U with a motherboard, case and all associated cables and sometimes mounting brackets, for around the 500 dollar mark. I also cruised CL and Ebay, but with the prices at that level, I figured I would buy new and save me some hassle with bad hardware, unsupported BIOS firmware, etc. Fry's does carry some inexpensive stuff, but if you would like your server to be as close as possible to 'mission critical' uptime, I would not buy everything from them. Recommend to do some research on the box that is in your price range on the net, and make sure what your purchasing will all fit once the parts arrive. Sometimes AMD(939) boards don't like ECC RAM, so just be aware before you start buying. One cool thing if your close to your data center, or the data center can install stuff for you when you co-locate, is that you could purchase a board with dual proc sockets(start with a single processor), and as business needs grow, add another, or maybe 2 gigs of RAM at first, and later on you can add another couple more gigs of RAM to speed things up. Of course, you would then need to use an SMP kernel on Linux, and maybe bigmem, so everything is seen/optimized, hardware wise. One thing I do like about newegg, is all the reviews, so you know what your up against, compared to just guessing, googling or reading a manufactures fact sheet. I hope this helped - Good luck on your server hunt."