GeForce GTX 980M Performance Testing
When NVIDIA launched the GeForce GTX 980 and GTX 970 graphics cards last month, part of the discussion at our meetings also centered around the mobile variants of Maxwell. The NDA was a bit later though and Scott wrote up a short story announcing the release of the GTX 980M and the GTX 970M mobility GPUs. Both of these GPUs are based on the same GM204 design as the desktop cards, though as you should have come to expect by now, do so with lower specifications than the similarly-named desktop options. Take a look:
|GTX 980M||GTX 970M||
|Memory||Up to 4GB||Up to 3GB||4GB||4GB||4GB/8GB|
|Memory Rate||2500 MHz||2500 MHz||7.0 (GT/s)||7.0 (GT/s)||2500 MHz|
Just like the desktop models, GTX 980M and GTX 970M are built on the 28nm process technology and are tweaked and built for power efficiency - one of the reasons the mobile release of this product is so interesting.
With a CUDA core count of 1536, the GTX 980M has 33% fewer shader cores than the desktop GTX 980, along with a slightly lower base clock speed. The result is a peak theoretical performance of 3.189 TFLOPs, compared to 4.6 TFLOPs on the GTX 980 desktop. In fact, that is only slightly higher than the GTX 880M based on Kepler, that clocks in with the same CUDA core count (1536) but a TFLOP capability of 2.9. Bear in mind that the GTX 880M is using a different architecture design than the GTX 980M; Maxwell's design advantages go beyond just CUDA core count and clock speed.
The GTX 970M is even smaller, with a CUDA core count of 1280 and peak performance rated at 2.365 TFLOPs. Also notice that the memory bus width has shrunk from 256-bit to 192-bit for this part.
As is typically the case with mobile GPUs, the memory speed of the GTX 980M and GTX 970M is significantly lower than the desktop parts. While the GeForce GTX 980 and 970 that install in your desktop PC will have memory running at 7.0 GHz, the mobile versions will run at 5.0 GHz in order to conserve power.
From a feature set stand point though, the GTX 980M/970M are very much the same as the desktop parts that I looked at in September. You will have support for VXGI, NVIDIA's new custom global illumination technology, Multi-Frame AA and maybe most interestingly, Dynamic Super Resolution (DSR). DSR allows you to render a game at a higher resolution and then use a custom filter to down sample it back to your panel's native resolution. For mobile gamers that are using 1080p screens (as our test sample shipped with) this is a good way to utilize the power of your GPU for less power-hungry games, while getting a surprisingly good image at the same time.
Introduction and Design
It was only last year that we were singing the praises of the GT60, which was one of the fastest notebooks we’d seen to date. Its larger cousin, the GT70, features a 17.3” screen (versus the GT60’s 15.6”), faster CPUs and GPUs, and even better options for storage. Now, the latest iteration of this force to be reckoned with has arrived on our desks, and while its appearance hasn’t changed much, its performance is even better than ever.
While we’ll naturally be spending a good deal of time discussing performance and stability in our article here, we won’t be dedicating much to casing and general design, as—for the most part—it is very similar to that of the GT60. On the other hand, one area on which we’ll be focusing particularly heavily is that of battery life, thanks solely to the presence of NVIDIA’s new Battery Boost technology. As the name suggests, this new feature employs power conservation techniques to extend the notebook’s life while gaming unplugged. This is accomplished primarily via frame rate limiting, which is a feature that has actually been available since the introduction of Kepler, but which until now has been buried within the advanced options available for such products. Battery Boost basically brings this to the forefront and makes it both accessible and default.
Let’s take a look at what this bad boy is packing:
Not much commentary needed here; this table reads like a who’s who of computer specifications. Of particular note are the 32 GB of RAM, the 880M (of course), and the 384 GB SSD RAID array (!!). Elsewhere, it’s mostly business as usual for the ultra-high-end MSI GT notebooks, with a slightly faster CPU than the previous model we reviewed (the i7-4700MQ). One thing is guaranteed: it’s a fast machine.