XDMA i šeme bez bridgea za CF (komunikacija preko pci-e što je uvedeno sa R9 290), kaže članak da će i nvidia tako nešto sa pascal uvesti
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The Technology Behind Fury’s Excellent Crossfire Scaling
We’ve seen a similar trend with AMD’s R9 290 series as well and it all comes down to AMD’s CrossfireX DMA engine. It enables faster, lower overhead communication between multiple GPUs, this in turn translates to better CrossfireX scaling. And that’s what we’re seeing take effect here. It also enables GPUs inside multi-GPU setups to inter-communicate through the PCI Express interface which eliminates the need for a CrossfireX bridge. While Nvidia’s NV-Link technology is targeted towards a different market with very different workloads – mainly for enterprise and HPC applications – the concept itself requires that Nvidia’s upcoming Pascal GPUs are built with the necessary hardware to enable this feature. The same hardware will allow Nvidia to deliver a similar solution to AMD’s XDMA in consumer gaming applications. But until then, AMD’s GCN 1.1 and later GPUs will continue to enjoy an advantage in multi-GPU scaling. An advantage that could allow AMD’s R9 Fury X2 to succeed in securing the frequently sought after “world’s fastest” title.
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U biti snaga duple fury će ovisiti o cooleru (clockovima koje stave), spominjala se "dupla nano" to bi moglo biti i sa nekim boljim zračnim coolerom, samo IMO bolje da naprave neku swag vodenjaču