The problem with such a section is, it becomes nothing more than a place where people post links to some hardware, asking if it would make a good computer or not....asking others to do their research for them. Other forums I participate in have such sections, and the end up being a deserted wasteland. People create a thread, and either don't get answers, or get several people arguing over which video card would be the best buy.
If you have a question about something to buy, research it, and then ask specific questions. I wouldn't ask someone else if I should get chocolate or vanilla ice cream, would I? I'd buy what I want or what I prefer. In many cases, that's the same answer. The person asking their question knows their needs and budget better than anyone else.