Quote Originally Posted by darkskypoet
I mean really? How else did you expect the data from system through PCI Express bus to get to the two chips?
I was hoping for something along the lines of how quad core CPUs do inter-core communication. Although in that case all the cores are on the same die. But I was still hoping for something along those lines. I don't know much about CPU/GPU architecture so it is difficult for me to speculate realistically. Is it really theoretically impossible to have seamless multi-GPU communication? Also why would the GPUs on the 4870x2 need to use the motherboard-based PCIe bus? The two chips are right next to each other on the same PCB.