No, Qualcomm’s new Snapdragon 820 won’t ”double your battery life”

Qualcomm is proud of its new Snapdragon 820 SoC. So proud, in fact, that it’s making a bold claim: That the system-on-a-chip is up to twice as power efficient as its previous high-end offering. However…

Sourced through Scoop.it from: www.computerworld.com

High-Tech Bloggers taking potshots at Qualcomm’s new Snapdragon 820 SoC.   “Qualcomm is proud of its new Snapdragon 820 SoC. So proud, in fact, that it’s making a bold claim: That the system-on-a-chip is up to twice as power efficient as its previous high-end offering.  Well, given that the previous SoC was the 810, that’s perhaps not saying much. A key reason why Qualcomm is having trouble competing at the high end at the moment is because of the power and heat issues with the 810. So the 820 can’t come soon enough.  Unfortunately, it doesn’t look like we’ll see devices built on the 820 any time soon. Also unfortunate is the ridiculous morphing of Qualcomm’s very clearly-stated efficiency claim into something far more hyperbolic and eye-catching.”   –  OK, so obviously there’s a world of difference between an SoC that’s “up to 2x as efficient” and an entire phone getting “double the battery life.” For starters, the 820 isn’t going to make today’s huge displays suck any less power, amirite? Anyway, Anshel Sag clarifies how the 820 is so much more efficient:

Part of the Snapdragon 820’s stated power savings also comes from the company’s new Symphony System Manager which is a…scheduler for all the different processors on the SoC. Qualcomm says [it] will help the SoC’s different processors, CPU, GPU, DSP, ISP, etc. to work more closely together in ways that improve performance and reduce power.   Some of these benefits can come from deciding which loads belong best on which processor.   More API support for the Snapdragon 820 and improved efficiency may make it more reasonable to put certain tasks on the new Hexagon 680 DSP rather than on the CPU or GPU. Additionally, the new Adreno 530 GPU may be more appropriate for certain tasks like OpenCL compute

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