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After analysis, we proved that the HTC One M9 is heated but not burned, but miracles do not exist and There are other consequences.
They are already many months of rumors about Snapdragon 810 . After in various media is much about talking, began to say that the most powerful SoC Qualcomm had serious problems with heat , which is why Samsung would not use it in the Galaxy S6, returning in this case to use exclusively Exynos processor, which since the Galaxy S3 did not occur in the international model . With the Samsung movement not only earned profit margin, but also created a bad image to the Snapdragon 810, while, as we have seen in the MWC, which is far beyond in performance.
The truth is that in the MWC could experience for an hour with benchmarks in the HTC One M9 , with the intention of reproducing the sustained poor performance could LG G Flex 2 (also with S810) in the first analysis of other media. To my surprise, the yield on the HTC One M9 not only declined only during the time I was forcing its CPU and GPU, with GFXBench and Geekbench, but was well above the G Flex 2. But I noticed that warming pretty , not to the point of burn, but to the point of being really annoying . In fact, after several passes with Antutu, came a warning that the device was very hot and it was advisable to stop message.
I really forced myself therefore I did not find relevant tell to review, as not use that often make a phone . Funny thing was that despite so hot even remotely approached the performance of Galaxy S6 with the same tests over a similar time period. Everything changed the day that the average German Tweakers announced that testing with GFXBench the HTC One M9 reached heated to 55º C , a figure not only harmful to internal components such as the battery, it may cause skin burns.
In this video, people from Tomsguide shows that Tweakers not lying:
After this analysis, since HTC said that an update would fix the problem. And yes, the problem of overheating is arranged , but keep in mind several things.
Units of MWC not intensive warming on common tasks , such as web browsing, and that’s something I found Javier Merchan during the first days of the review, when he had not yet received the famous update. Really, what did HTC at MWC was “fool” the press with the benchmarks, as to Note 4 was Samsung. How did? They eliminated or made very soft what is known as Thermal Throttling . It is a power limiter is activated in the CPU or GPU smartphone when overheating is detected. What made HTC at MWC was remove the Thermal Throttling while benchmarks were executed, bringing the HTC One M9 could become hot very much, but still not reduce performance in practice.
The solution and sacrifice
What have you done in the last update? have introduced a much more severe thermal throttling, so that the device does not reach 55 C, and stays at much lower values, and even below other terminals Snapdragon processor. The worst (and normal) is that the road has lost some performance, and the figures have been away much of what gets the Galaxy S6, already similar to G Flex 2. Beyond benchmarks, limiting performance can noticeable when playing for long periods at very demanding games like Asphalt 8. Good SoC and good heat will make the game run just as fluid as long as it takes. One that is limited, cause noticeable performance drops frames per second .
For exemplify, in the MWC got in Geekbench score of 4025 on multicore and 1160 in single core, which is the fact that most affects most applications, not make good use of multiple threads. In proof of my teammates Javier Merchan with the updated software, performance has fallen to 3420 points in multi core and 866 in single core. We talked about a decrease of yield of 15% using multiple cores and 25% using a single core , differences that can become quite noticeable in tasks such as web browsing and do the terminal much faster than one with Snapdragon 805 and even 801 .
If we go to the case of the GPU, we see that after several passes with GFX Bench, you can lose up to 41% Performance . It means, therefore, that we can easily notice a relatively long gaming session.
The conclusion to all this is simple. Our HTC One M9 does not overheat, but to do so, HTC has had to introduce thermal limiters that make the device does not reach yield as much as it could, since the heat produced is so huge that it can be not only uncomfortable but counterproductive to the skin and the phone itself. The Thermal Throttling is normal in smartphones, but not as severe as we find in the HTC One M9 way, LG G3 and Flex 2, or historically, the Nexus 4.
March 23, 2015
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