Computex 2019 | Qualcomm shows off first benchmarks of the Snapdragon 8cx
On the sidelines of announcing the Lenovo Project Limitless 5G notebook, Qualcomm offered an overview of what to expect from the Snapdragon 8cx in terms of raw performance. Qualcomm says that the Snapdragon 8cx is 2x faster than the Snapdragon 845, 3.5x faster than the Snapdragon 835, and 60% more efficient than the previous Snapdragon for ARM, the Snapdragon 850. The 8cx features eight Kryo 495 cores — four high-performance Gold and four power-efficient Silver cores, all based on the 7nm process. The Adreno 680 GPU in the 8cx can drive two 4K HDR external monitors and supports the latest DirectX 12 APIs and hardware accelerated video encoding and decoding for VP9 and H.265.
The Snapdragon 8cx comes with a built-in X24 LTE modem but can support the Snapdragon X55 multi-mode 5G modem for theoretical download speeds up to 7 Gbps.
Qualcomm is targeting twice the performance equivalent of Intel's 15W ULV chips, specifically the Core i5-8250U, at a fraction of the power consumption and demonstrated some numbers in 3DMark and PCMark to prove it.
Snapdragon 8cx Benchmarks
UL Benchmarks introduced Applications benchmark and Battery Life Profile in PCMark 10 at Computex and Qualcomm showed some scores using these new tests. In the PCMark 10 application benchmark, the Snapdragon 8cx proved to be a worthy alternative to the Core i5-8250U. We ran the benchmark ourselves on Lenovo's Project Limitless laptop and saw that the figures were in the range of Qualcomm's claims and even higher at times. The Core i5-8250U seems to fare better in number crunching, but the Snapdragon 8cx performs better overall. Significant gains were seen in the battery life metrics; expect to see at least a seven-hour gain with the 8cx when compared to the 8250U.
Similar benefits were demonstrated with 3DMark Night Raid. It must be noted that the 8cx is indicated powering an FHD display whereas the 8250U is driving a 2K one. Nevertheless, it is still interesting to see the Adreno 680 achieve comparatively better performance than the Intel UHD Graphics 620.
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Here are some videos demonstrating the Qualcomm 8cx in action in real-world applications. More videos can be found in the Always On, Always Connected YouTube playlist.
Qualcomm Computex 2019 Presentation