Because a GPU has always been interchangeable for as long as I could tell since I've owned a RIVA TNT2. Unlike a motherboard, to my knowledge a GPU has been an add in card, not a motherboard.Well, I think we all are already OK with not having the choice of changing the GPU and RAM that is soldered onto our video cards. We just think of it differently, and that it's OK to simply buy another video card when it's time to upgrade.
I could envision the same mentality toward the motherboard/CPU/RAM combo, just being an integrated unit like the video card. It's a good parallel because the costs can be about the same for both the video card and the mobo/CPU/RAM.
So why do we accept integrated video card, but no integrated mobo/CPU/RAM? Aren't the arguments about choice the same when it comes to video cards? I want to be able to upgrade my GPU and video card ram separately, but that's not how things work for video cards, and we are happy with it. We just blow another $300-$500 on a new video card every 2 years and that's ok? Look at all the choices in combinations of GPU/RAM/cooler for video cards, couldn't the motherboard/RAM/CPU be the same way? Same model, same price, just a mental block against it?
Unlike VRAM, the RAM we use has different capacities for different usage scenarios. A basic PC may not need more than 2GB but a rig specifically for rendering, etc requires more RAM (8/16/32GB). This creates a problem as you would not only create different motherboard models for different CPUs, now you're creating more motherboard models with a particular CPU and differing RAM capacities. The current method implements modularity and reduces the need for creating a large number of models to cater to every user needs.
I disagree with the ideology of integrating every component like Apple does. IIRC there was a person who had a burnt USB on his 1 month old MBA. Oddly enough the warranty does not cover the damage. So instead of replacing the affected parts, he had to fork out a hefty sum to replace the entire MBA motherboard. The irony with that is the amount he had to pay costs more than a brand new MBA.
Now of course all laptop motherboards have USB ports integrated directly. But what if you have a faulty RAM? Faulty GPU? Remember, all of these components are integrated directly to the motherboard and no way of changing them without changing the motherboard itself. Which is why replacing a laptop motherboard is often more expensive than fixing a desktop.
This isn't about the frequency of changing hardware, its about the potential headaches that might occur if something breaks. TL;DR, understand this picture.
