you should be able to find passive 500 watt psus. There are passive cpu heatsinks around. ssds are passive, motherboards are passive, ram is passive. The hard thing is the gpu, but there are huge 4 slot gpus if you want them.
Sorry guys, for the lack of information when I posted my question. What I would like to do is build an affordable PC system for 3d gaming and watching 3d movies. I found out that passive 3d is more relaxed for your eyes and brain and has cheap lightweight glasses so that would be the thing for me, but the videocards that I found on the internet only support active 3d, the most popular one is from nVidia. I am surprised that in computerstores here in the Netherlands very little people can provide me with information about this subject. So I really hope someone here can help me out. Thanks in advance.