i know i'm a noob so please forgive the stupidity of this but would a socketed gpu increase data throughput/bandwidth/overall performance? if so by how much or would it just drop prices??
Unlikely not --- a socketed GPU will be slaved to the memory interface specified by the socket standard. Today's discrete graphics boards offer up to 384 bits x as high as 1600 MHz bandwidth. Discrete graphics cards and the onboard memory has much higher bandwidth than today's CPU to DDR2 memory.... for good reasons. Socketing the GPU would slow this down tremendously and is also one of many reasons why IGPs suck so bad.
Hmm, yes, the socketed gpu sharing system memory would be no different that an IGP. Perhaps a chipset solution to reduce latency. Or, perhaps if the 2nd socket had it's own bank of memory, like 2 socket server boards do today. But even so, as of today, you're still only looking at 128bit by what, 800 or 1000MHz? Perhaps if the path were widened to say 512bit x 2000HMz (GDDR4 speeds?), then maybe it'd be worthwhile. Running with that idea, that could possibly open up the door for system and gpu memory upgrades, let alone the swapping out cpu's and gpu's as upgrades/new gen is offered, providing there isn't a socket change. I can't help but think that AMD/ATI will try and offer a socketed gpu for the 4x4. The creative collective at AMD/ATI has to have more in mind for 4x4 other than what they've shown us, at least I hope there is. Anyway, just thinking out loud.
That's not really true. By placing a reasonable amount of E-DRAM on the die, it would be possible to up the bandwidth the way Xenos does with the XBox360.
The biggest problem will be the size of the die. This cannot happen before 45nm which may be why Fusion has been delayed. It could also be so that it won't be late.
AMD will first have to modularize the pixel pipes and integrate the GPU core with the CPU core.
I said before nVidia may get there first because they only need to be able to decode X86. Though AMD does have "Stream" already.
I would suspect that if they push 65nm forward (80nm nVidia is already out for mobile) they are going to try to release an SOC.