Originally Posted by fateswarm
It might. But people already pay more than $400 for graphics routinely. The markups for sockets should be a drop in the ocean for those budgets.
PS. CPUs benefit from snap inter-chip communication. VRAM is already soldered on a board away from the GPU.
So if we just look at the simplest possible version of your idea: the freedom to choose your VRAM and your GPU and put it into existing PCB. I don't see how this would benefit anyone. I believe each GPU socket changes with each lineup change so you would need to get a new one to upgrade. You would have more freedom in how much VRAM you want, but to be honest, I don't feel to constricted by the amount of VRAM choices on existing cards.
You're argument of benefits is that giving consumer choice would drive price lower due to margins, and I feel that is inaccurate for several reasons.
One: nVidia and AMD are able to negotiate and get bulk pricing on their VRAM, which the average consumer cannot do
Two: Graphics cards manufacturers are able to put everything together for you, avoiding the costs associated with second level electronics packaging, they are able to just use first level. (This is my machine in China reference).
Three: Instead of paying MSI's marketing budget, you are now paying the marketing budget for the "motherboard" creator, the GPU creator and the VRAM creator, and all their individual re-sellers.
As we get into more complex versions of your idea I think it is better. More freedom to do what you want would be cooler. The problems here are how everything would talk to each other. Nick2253 talked about the incredible amount of standards that go into motherboard makers so that your RAM works well with your motherboard which works with your processor x 1000 different things. If we were to apply this level of freedom to graphics cards the standards making bodies would have to be incredible, and you know you would never get nVidia and AMD to agree on a half decent standard.
TL;DR: Despite my protesting, I like your idea, I just think it is not feasible or cost-effective in the current market.
Edit: typoEdited by postama - 7/26/13 at 2:19pm