Quote from WinstonTJ:
I disagree with this. Dell & HP make excellent workstations and desktops that are equally expandable as a custom machine.
Well, I've griped about this before. I have a three-year-old HP Pavilion Elite d5000t ATX which came with a Burbank-GL8E board. I tried to replace the CPU cooler with a silent one. The stock cooler has a fan that is screwed to the heat sink which in turn is attached to the board with thin screws. The screw holes in the board are too narrow to accommodate any silent coolers that I have found. I even tried using the HP screws with a new cooler to no avail. I have been unable to find a silent cooler that would fit. And apparently there are no silent heat-sink fans (without the heat sink). All I can find are 80 x 80 three-pin case fans, not the needed four-pin CPU fan. (If someone knows of such a fan I would be grateful for the information.)
Anyway, the point is the proprietary size of the holes in the HP board. Something you likely wouldn't think about or ask about when you make a purchase.