Intel's on Chip GPU, what about memory BW?

[Hugo Drax]

They are working towards more powerful integrated GPUs but how will they address the Bandwidth to memory issue?

At some point it will be a moot point to keep throwing more EU's into the mix when your limited to 20GB/s shared with the main CPU system ram.

How will they address this?

 

[Ferzerp]

They are working towards more powerful integrated GPUs but how will they address the Bandwidth to memory issue?

At some point it will be a moot point to keep throwing more EU's into the mix when your limited to 20GB/s shared with the main CPU system ram.

How will they address this?

Wider striping (more channels)/DDR4

However, the latency has to be killer.

 

[BenchPress]

They will add an L4 cache consisting of DRAM, to offer lots of bandwidth to the iGPU and reduce power consumption.

 

[nonameo]

I doubt we'll see a wider mem path. The whole purpose of integrating the gpu is to save money, and more mem channels/higher bandwidth channels will just make it more expensive. DDR4 seems like the most likely.

 

[utahraptor]

Currently the only way to improve IGPU besides Overclocking is by using higher frequency DDR3 ram. The irony is that anyone spending that much on ram is likely buying a discrete GPU.

 

[Idontcare]

How will they address this?