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A Snapdragon 8 Elite gaming smartphone without the ASUS name stamped on it would be next to impossible, which is why it is no surprise to learn that the new ROG Phone 9 and ROG Phone 9 Pro have officially been announced. In addition to the chipset upgrade, the new flagships also sport newer displays with a higher refresh rate and other specification improvements, which we will discuss in detail here. So, let us jump right into it.

However, tucked away in Qualcomm’s presentation was mention of up to 45% better energy efficiency for its new custom CPU setup, thanks in part to TSMC’s cutting edge 3nm manufacturing process. That’s the potential to add significant hours of screen-on time to certain scenarios. To see if these claims have any merit, I grabbed the new ASUS ROG Phone 9 Pro, which is very similar to last year’s Snapdragon 8 Gen 3-packing ROG Phone 8, and ran the phones through a series of battery tests. The results certainly lend weight to Qualcomm’s lofty claims, albeit with a few caveats.

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Qualcomm’s Snapdragon 8 Elite looks like a killer chipset, but one of its biggest benefits for future Android phones might end up being in battery life, with some major improvements showing up in early tests.

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At a time when phone-makers are using generative AI and wild folding screen designs to tempt people to upgrade, Asus is like a kid off in the corner of a sandbox making a sandcastle on its own terms. The ROG Phone 9 Pro is undoubtedly aimed at gamers, but it's also a glimpse into the future. It's powered by Qualcomm's Snapdragon 8 Elite chip, which you can expect to see in premium phones from Samsung, OnePlus, Xiaomi and others in 2025.
The base model is equipped with 85 LEDs, while the ROG Phone 9 Pro goes all out with a whopping 648 LEDs. The regular ROG Phone 9 can be configured with up to 12GB LPDDR5X RAM and 512GB of UFS 4.0 storage, while the ROG Phone 9 Pro can be kitted out with 16GB RAM and 1TB of storage. Of course, as you would expect, there is an even better version called the ASUS ROG Phone 9 Pro Edition, and it comes with a mammoth 24GB RAM and 1TB of onboard storage. Like the previous iterations, the company continues adding improved cooling solutions to its smartphones.
The Asus ROG Phone 9 Pro’s battery is just 5.4% larger than the 5,500 mAh pack found in the previous generation. However, when comparing the battery life in a PCMark battery test, the endurance jumped from just over 11 hours to nearly 14.5 hours, an increase of nearly 30%. Meanwhile, the OnePlus 13’s 11% larger battery lasted nearly 17.5 hours in same test, up from 12.2 hours in the OnePlus 12, an increase of over 42%.
With the latest models, ASUS claims that it has added a new graphite sheet that is 57 percent larger, along with a vapor chamber cooler to keep the Snapdragon 8 Elite temperatures at bay. The battery of both models has been increased to 5,800mAh, which ASUS says is more than sufficient to last for more than four hours of heavy gaming sessions, with the cell retaining at least 80 percent of its charge after 1,000 complete cycles. Charging is possible with the use of a 65W wired connection, with the battery getting topped wirelessly up to 15W.
Benchmarks are never fully reflective of reality, but with improvements this big, it’s hard to imagine that Android phones powered by Snapdragon 8 Elite won’t find drastic improvements to their battery life. The OnePlus 13 and Asus ROG Phone 9 will likely be the first Snapdragon 8 Elite devices to hit the US market, but Samsung’s Galaxy S25 series will also be using this chip when it debuts next year.