AMD sent over some of its lab gear: an interposer card and two PCI Express-based boards with MXM modules...one of which hosted its upcoming Radeon HD 8790M GPU. At long last, the GCN architecture is hitting mainstream notebooks in its 28 nm glory.
Test Setup And Benchmarks
Again, because the new Radeon HD 8000M-series GPUs aren't yet shipping in notebooks, we're using a desktop-oriented setup with a PCI Express interposer to preview the performance of AMD's GCN-enabled mainstream mobile graphics processors. Although we could have used an overclocked Core i7-3770K to crush the potential of a platform-oriented bottleneck, we stepped down to a Core i5-2500K instead. Though still fast, this part running at its stock settings is perhaps a better match to the performance of what you might find in a notebook (even if its 95 W TDP is way out of bounds).
Wow, can't say I expected to see any 8000 series/700 series benchmarks for at least a few months. Looks prettyimpressive for a mobile GPU, can't wait to see what the high end mobile and desktop cards can do.
A Bad DaySometimes I wonder why instead of CFing or SLIing two high end mobile GPUs, a desktop GPU would've achieved the same performance but without the stuttering or driver issues. And if thermal management is an issue, then the desktop GPUs could always be undervolted (but of course more expensive because of the extra step).
If you look, there is only one chip (shown on this page) which means it is not being CrossFired. I agree that 8780M would be a better name than 8790M. Andrew Ku, maybe on the front page you can clarify this?
About using desktop parts, it is my understanding that they sometimes do exactly that. Take the 7970M, which as far as I can tell, is an 78XX part (I forget which one) except the mobile chip has MUCH higher binning than the desktop 78XX.