[citation][nom]ChaohsiangChen[/nom]A lot of motherboard manufacturers provide fan speed control. What's the point here? Out-of-box Dell and HP don't sound like 747 and it's up to them to decide whether to put such a feature in. A lot of builders don't care about noise, so they buy cheapest fans with maximum air flow capacity to cool their systems. I built my system based on need for quite HTPC and it runs very quite with all the quite parts I bought. It does take some effort to bring noise control to your system, but not at Apple price. With that price, I can build two water-cooled Windows/linux machines of the same spec.[/citation]
What you fail to mention is the time and effort you put into building/customizing your computer. I would go sa far as to even say the time you take to engineer your system as well, since you have to select the parts, determine the amount of power supply and cooling your design will require, and design any additional cooling systems that are a part of your build. I know exactly how long this takes, since I spend an inordinate amount of my time building and overclocking custom water-cooled computers. I know good and well how much money I spend on PC parts, and I can tell you, that in billable hours (I usually bill at $120/hr for my time, btw), my home-built rigs would run upwards of $6,000 to $8,000 for parts and labor, and that is if I don't run into any issues. Time and time again, though, (and I know this is anecdotal) the Macs I have purchased for work have been like butter right out of the box, and the build quality is at or above the level of my custom-built gaming PCs.
And I can tell you that, since I work on both PCs and Macs, I spend a LOT less time refining my environment on my Mac than I ever do on my PC, and the only thing I really do on my PC is play games. That's why I don't spend work time fiddling with my systems, and I relegate my work to my Mac and play on my PC. It's only fair to my customers, and I spend lot fewer crunch hours futzing with my computer so I can actually get some work done.