The annual Qualcomm SnapDragon Technology Summit is taking place in Hawaii, and the year’s biggest product is the flagship SoC Snapdragon 865, with the hottest topic being 5G. Qualcomm has published detailed parameters for the Snapdragon 865 and 765, both of which support 5G, but not in the same way that the SnapDragon 765 is the first platform to integrate a 5G base to the SoC, while the 865 is the same as the previous generation 855 as an external baseband chip. Unlike the previous generation, this time Qualcomm default vendors must hang out.
This has led to some questions about why a midrange platform uses an integrated 5G, but the high-end is external. The baseband is generally integrated into the mobile SoC because it not only saves space, cost, and benefits. So why would Qualcomm do an external solution on its flagship platform?
The answer is a Flag from Qualcomm:
“Supporting both Sub-6 and mm Wave is true 5G”
But at the same time, high-speed 5G support for Sub-6 and mmWave (mmWave) is costly, with higher power consumption and heat, so simply put Qualcomm is using the external solution to achieve flagship 5G performance on the flagship platform.
“When we consider the X55’s ability to maximize performance in a variety of functions, (external) seems to be the right approach, especially given the size of the baseband chip and the performance of the application processor,” Qualcomm President Cristiano Amon explained in a roundtable session. ”
In other words, the functionality and performance of the SnapDragon X55 means that the baseband chip needs to be at a certain level of size and power consumption. If you consolidate it into a single SoC, the area and power consumption are shared with other SoC modules. This allows the CPU and GPU to have less space if the baseband chip is larger, and it also creates greater thermal challenges that affect high-performance continuous output.
“How do we think about the flagship for the best performance and the strongest 5G?” SnapDragon X55 is exactly that,” says Amon. For Qualcomm, the external baseband chip means that the SnapSnapdragon 865 is uncompromising in terms of both computing and 5G performance.
“Some companies in a hurry to integrate 5G” lost 5G performance
Amon also said that “some companies in a hurry to integrate 5G” have reduced the performance of their 5G basebands accordingly.
Some of the companies here are obviously Huawei and Samsung, and Huawei’s Kirin 990 5G SoC integrates the baseband chip, but only supports the sub-6GHz band with a maximum download speed of 2.3Gbps, and Samsung’s Exynos 980 is also true, does not support millimeter waves, and dual-mode connectivity has a maximum performance of 3.6Gbps.
Qualcomm’s external SnapDragon X55 has a maximum download speed of 7.5Gbps, Huawei’s external version of the Dragon 5000 baseband chip supports millimeter waves and a maximum download speed of 7.5Gbps, and Samsung’s Exynos 5100 external baseband chip has a maximum download speed of 6Gbps , Exynos 5123 can reach 7.35Gbps. Samsung also plans to use the external Exynos 5123 baseband solution on its Exynos 990.
Obviously, integrating the 5G baseband requires some performance compromise.
Qualcomm’s mid-range SoC SnapDragon 765 platform is integrated with the SnapDragon X52 baseband, which supports up to 3.7Gbps download speeds, half the 865 external solution. But what’s stronger than YouShang is that it supports millimeter waves and Qualcomm’s own DSS technology (dynamic spectrum sharing).
Hanging is not necessarily inefficient
The external power consumption is, of course, power consumption, but it is not necessarily inefficient, and Amon says such an architecture does not sacrifice its endeothel.
In fact, the X55 baseband of the Snapdragon 865 is more energy efficient on 4G LTE than the X24 baseband integrated on the 855. So if you’re using a 4G network, the power consumption is lower than before. Of course, if you use 5G, you need to consume more power, especially when downloading at high speeds.
In addition, the SnapDragon X55 supports both 5G FDD spectrum and 5G independent networking, and it is a 4G and 5G dual-mode baseband that supports dynamic spectrum sharing and facilitates operator migration from 4G to 5G.
As for when we’ll see the high-performance integrated 5G baseband SoC, it’s expected to be next year. PS. Apple is also expected to adopt Qualcomm’s 5G baseband next year.
Attached: SnapSnapdragon 865 Details
Reference: Android Authority