Nvidia Tegra K1: new details on energy efficiency consumption

When last March Nvidia started to talk and show the first details of its new Tegra K1 , professionals and above all the users in the process of changing tablet, laptop or smartphone, they began to desire this solution given the excellent performance that this chip should offer (especially in 3D).

What is interesting, however, is even more consumption and energy efficiency, an aspect on which Nvidia worked great.

Tegra K1 will use not only on mobile devices, but also on laptops, convertible, arriving at the server world, where, albeit with lower performance for example a Nvidia Tesla K40 itself, will be able to undoubtedly be more efficient.

Although the comparison may seem risky, the site wccftech.com publishes a slide that sees in front of the absolute performance of Tegra Tesla K40 with K1; the result in terms of raw power is not a surprise and of course in favor of Tesla K40, while when it comes to efficiency, we note that Tegra K1 is much better: 

WCCFTech.com	Tesla K40 + CPU	Nvidia Tegra K21
Single Precision Peak	4.2 TeraFlops	326 GFlops
Single Precision SGEMM	3.8 TeraFlops	290 GFlops
Memory	@ 288GB 12GB / s	2GB@14.9GB / s
Power (CPU + GPU)	~ 385Watt	<11Watts
Performance Per Watt	10SP GFlops Per Watt	26SP GFlops Per Watt

With these numbers Tegra K1 opens the road to become one of the most viable platforms for the coming years, especially given the versatility that should ensure consideration of the agreements with the automakers that take advantage of the Tegra solution for future infotainment systems.

Galaxy S5: up to 25% energy savings in most thanks to the technologies of Lucid

Samsung with a new Galaxy S5 tried to optimize energy consumption and in addition to the integrated power saving modes that modify radically the user interface making it black and white and facilitated with Ui (Ultra Power Saving Mode) has also introduced other measures in order to make the Galaxy S5 one of the most optimized from the point of view of consumption.

Thanks to the partnership with LucidLogix, three interesting features dedicated to energy savings have been introduced in the new top of the range NavExtend, WebExtend and GamExtend . NavExtend works to improve power during navigation when using GPS, acting on the frequencies of the GPU so that they correspond exactly to the bare minimum required by the navigation software, ensuring that the graphics travel at full load, which causes a fast overheating of the device and a faster consumption of the battery.

Similarly, WebExtend handles combine CPU and GPU in order to allow its use at lower frequencies, always in view to saving energy. Both solutions are able to provide a reduction in fuel consumption of approximately 25% and are currently compatible with most browsers and browsers available on Android. The last solution, GamExtend, it is not just a novelty as it is already being adopted by Galaxy Note 3 and is concerned with optimally manage the device when it is subjected to heavy workloads such as gaming. The combination of technologies provided by Lucid and optimizations Samsung could make record performance 2800 mAh battery of the device beyond what you might expect. Just can not obviously fail to fully test this aspect.

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