World's Fastest Mobile GPU - Full GM204 GTX 980 for Notebooks
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For many years, the idea of a truly mobile gaming system has been attainable if you were willing to pay the premium for high performance components. But anyone that has done research in this field would tell you that even though they were named similarly, the mobile GPUs from both AMD and NVIDIA tended to be noticeably slower than the desktop counterparts. A GeForce GTX 970M, for example, only had the CUDA core count slightly higher than the GTX 960 (desktop) and 30% lower than the true desktop GTX 970 product. So even though you were getting fantastic mobile performance, there continued to be a dominant position that desktop users held over mobile gamers in PC gaming.
NVIDIA is changing that this fall with the introduction of the GeForce GTX 980 for gaming notebook. Notice I did not put an 'M' at the end of that name; it's not an accident. NVIDIA has found a way, through binning and component design, to cram the entirety of GM204-based Maxwell GTX 980 GPU inside portable gaming notebooks.
The results are impressive and implications for future PC gamers is dramatic. Systems built with the GTX 980 will include the same 2048 CUDA cores, 4GB of GDDR5 running at 7.0 GHz and will run at the same base and typical GPU Boost clocks as the reference GTX 980 cards you can buy today for $499+. And while you won't find this GPU in anything called a "thin and light", 17-19" gaming laptops do allow for portability of gaming unlike any SFF PC.
So how did they do it? NVIDIA has found a way to get a desktop GPU with a 165 watt TDP into a form factor that has a physical limit of 150 watts (for the MXM module implementations at least) through binning, component selection and improved cooling. Not only that, but there is enough headroom to allow for some desktop-class overclocking of the GTX 980 as well.