AnandTech has offered a set of results, shows new iPhones on the top of several charts, the results were due to benchmarks and tests that conducted on iPhone 6, 6 Plus, iPhone 5s and other competing Android handsets.
The test includes, CPU benchmarks, graphics performance (GPU), and battery life, The new iPhones occupied the first ranks, exception iPhone 6 Plus which lags in graphics performance due to the larger screen.
In in GPU benchmarks, we generally see a pretty solid lead over the competition for the iPhone 6/A8. It's seems quite clear that there is a significant impact to GPU performance in the iPhone 6 Plus due to the 2208x1242 resolution that all content is rendered at. It seems that this is necessary though, as the rendering system for iOS cannot easily adapt to arbitrary resolutions and display sizes.
As for the battery life despite the small number of the iPhone 6 battery, which is just 1810 mAh, compared to other competitors, that have a great numbers, but was able to overcome them. That makes the number not always the basis to judge, though its important, especially when a device is designed and prepared by one firm.
As one can see, it seems that Apple has managed to do something quite incredible with battery life. Normally an 1810 mAh battery with 3.82V nominal voltage would be quite a poor performer, but the iPhone 6 is a step above just about every other Android smartphone on the market.
Apple announced the iPhone 6 and iPhone 6 Plus at its September media event, the launch day was on 19 September. Demand for the two iPhones was high with Apple selling 10 million iPhone 6 and 6 Plus units in the first weekend of sales. The two phones feature, Apple's new A8 processor with second generation 64-bit, M8 motion co-processor, 8-megapixel camera, faster 802.11ac Wi‑Fi, VoLTE, and NFC.