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[Dwood]

Mantle isn't supposed to be competing with CUDA, it's competing with OpenGL and Direct3D. OpenCL is AMD's answer to both CUDA and PhysX.

I stand corrected.

The idea of exclusively using the PCI-Express bus for inter-GPU communication on a high-end video card was worrying at first given the inherent latency that comes PCIe, but to the credit of AMD’s engineers they have shown that it can work and that it works well...

Interesting... A card that will be able to utilize PCi-e 3.0... AMD has gotten me interested

The new/current gen will struggle with 4K, so you'll be waiting a while for something that will beast 4K. I'd say at least 3 years for something reasonable in price and performance.

Yeah, I don't expect it any time soon, but 3 years is a bit much, imo. When a reasonably priced 4k-monitor comes out I'll pick one up, it shouldn't be too long (im' thinking a max of a year or so before we see one in the sub-$800 range. which means the 2560x1440 or whatnot will eventually be at the $300-250 range. What I look forward to more than that, is a monitor that's ~22" at 2560x1440, which is about the same ratio as the Retina displays on iPads. No point in buying a beast of a monitor if it's got worse pixel density, no matter how large it is.

...and if games stop being hopeless console ports, you could be waiting longer.

It's also worth keeping in mind that current PC games are ports designed for hardware from 2006 but that's not going to be the case for much longer. It could end up pushing affordable 4K gaming further away than expected.

It depends- 4k monitors have commercial viability outside of gaming as well, especially in the larger enthusiast HD-TV market.