First, the speeds and feeds. The GTX 980M and 970M appear to both be based on the GM204 Maxwell chip. While the full-fat GM204 (present in the desktop GTX 980 part) has 2048 CUDA cores, the GTX 980M has 1536 and the 970M has 1280. Presumably while the desktop part has a full complement of 16 Maxwell Streaming Multiprocessors (SMMs), the mobile parts only have 12 and 10 respectively. Other aspects of the GM204 appear to be fully present in the mobile parts, however: Dynamic Super Resolution (DSR), MFAA, and Voxel Global Illumination (VXGI) are all there.
Read our full review of Nvidia’s Maxwell graphics cards for more details on the architecture.
Because the GTX 980M and 970M are mobile parts, there’s also an updated version of BatteryBoost — and if your laptop has an integrated Intel GPU as well, seamless switching with Optimus is still available.
Much like the desktop Maxwell-based chips, Nvidia is claiming that the 980M and 970M have 40% better performance-per-core and 100% (2x) better performance-per-watt over Kepler-based parts (the 680M and 670M). Because of these increased efficiencies, the mobile 980M manages 75% the performance of the desktop GTX 980; the 680M, by comparison, only managed 60% the performance of the desktop GTX 680. While the 680M could only manage 1344 CUDA cores, Maxwell’s increased efficiencies allow Nvidia to squeeze 1536 CUDA cores into the 980M.
Nvidia
mobile Maxwell performance, versus mobile Kepler. Please excuse
Nvidia’s disgusting use of ’0.5′ on the left hand side. When the figures
are that strong, you really don’t need to cheat, Nvidia!
Nvidia says that eight OEM laptops are available immediately, with most of them offering a choice of the GTX 980M or 970M graphics card. Most notable are probably the 17-inch Asus Rog G751 and MSI GT72 — but if money is no object, and you want mobile gaming rig that really does have comparable graphics performance as your desktop PC, the 17-inch Gigabyte Aorus X7 now has the option of 2x GTX 970M in SLI mode.
Now read: Nvidia’s mobile Maxwell GPU is a monster, beating all current AMD and Nvidia graphics cards by a huge margin
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