On the Snapdragon Summit, Chris Patrick, SVP and GM, Cellular Handset, Qualcomm, unveiled the Snapdragon 8 Gen 2, Qualcomm’s flagship SoC for premium smartphones, and the successor of the Snapdragon 8 Gen 1 and the Snapdragon 8+ Gen 1.
System Efficiency: Kryo CPU Cluster
Let’s begin with system efficiency, the usual sizzling subject for any new era of processors. Qualcomm has improved all efficiency facets over final yr’s Snapdragon 8 Gen 1.
The brand new Kryo CPU cluster is now based mostly on one ARM Cortex X3 (Prime, 3.19 GHz), four efficiency cores (2.8 GHz), and three effectivity cores (2.0 GHz).
Final yr’s era featured one ARM Cortex X2 (Prime, 3 GHz), three Cortex A710 (2.5 GHz), and 4 Cortex A510 (1.8 GHz), appropriate with the ARMv9 Gen 1 CPU structure.
The additional efficiency core and the brand new ARMv9 Gen 2 structure drive a lot of the efficiency increase, whereas the minimal enhance in CPU frequency additionally offers an additional nudge.
Qualcomm estimates this new CPU cluster to be 35% quicker and as much as 40% extra power-efficient than the Snapdragon 8 Gen 1, the earlier market chief for flagship Android smartphones.
The 40% power-efficiency quantity is surprisingly excessive, and Qualcomm claims it’s because of the Kryo CPU’s new microarchitecture. With no clearer clarification, I’ll assume it’s based mostly on the very best case examine, and upcoming benchmarks would possibly shed extra mild too.
The brand new Kryo CPU options an 8MB L3 cache, a 33% enhance over the 6MB L3 cache within the earlier era. Augmenting the cache measurement helps to keep away from costly DDR reminiscence entry each time doable.
The brand new chip provides help for LP-DDR5x reminiscence as much as 4200 MHz and with as much as 16 GB of reminiscence density.
Synthetic Intelligence (AI) Engine – Snapdragon Sensible
One of many prime areas “that might be vital to Snapdragon 8 Gen 2 is synthetic intelligence. This platform is purpose-built for AI. […] On the coronary heart of our AI expertise is the Qualcomm AI Engine [which] is product of a number of applied sciences together with Adreno GPU, Kryo, Sensing Hub, Reminiscence, and Hexagon” stated Francisco Cheng, Senior Managing Director, Product Advertising and marketing, Qualcomm, throughout our briefing.
Throughout all applied sciences concerned in processing AI fashions, the Qualcomm AI Engine eighth era improved the efficiency by as much as 4.35X and the performance-per-watt by 60% over the seventh era.
Hexagon, AI co-processor
Qualcomm defines Hexagon as a “fused AI accelerator structure,” which means that the Hexagon logic block is product of a number of forms of computing models. Qualcomm made a number of enhancements all through Hexagon, and probably the most notables are the 2X measurement enhance of the Tensor accelerator and the addition of a devoted energy supply system.
The foremost modifications in Hexagon had been made to handle the power to run extra complicated neural networks, notably round transformer networks, to ship, amongst different issues, multi-language translation in real-time.
Qualcomm’s Micro Tile Inferencing is a brand new method that works by splicing neural networks into ‘tiles’ that might be dispatched to accessible compute models in Hexagon. Qualcomm didn’t go into a lot element, however in our expertise, tiling knowledge is usually utilized to extend parallelism (course of the tiles in parallel to maximise {hardware} utilization) and probably enhance cache coherency and reminiscence bandwidth. Each could make a big influence on total efficiency.
Final yr, Qualcomm added the help of combined precision INT8+INT16, (automated change between INT8 and INT16 precisions) to its non-automatic combined precision expertise, named “all precisions help” (INT8, INT16, FP16).
Within the new AI Engine, Qualcomm added the help of 4-bit Integer precision (INT4) within the “all precisions” mode, so choose AI algorithms and neural community fashions can course of quicker throughout the Hexagon compute models. On prime of that, INT4 permits Hexagon to run extra fashions concurrently (parallel computing).
Every AI mannequin may use a unique degree of precision, as some AI-driven duties will ship adequate outcomes utilizing an INT4 low degree of precision for quicker processing, whereas others might require increased ranges of precision similar to INT8, INT16, FP16, and FP32 (Floating Level saved on 16 or 32 bits).
Qualcomm stated that the brand new AI Engine makes use of INT4 in “cinematic mode” for real-time blurring of the background (video bokeh), with no seen distinction in picture high quality. Beforehand related AI fashions used INT8.
4th era Sensing Hub with a dual-AI processor
The Sensing Hub is the impartial low-power multi-core logic unit that features when the remainder of the SoC is asleep. It processes in real-time the contextual knowledge streams similar to voice, audio, sensors, and connectivity.
Final yr, Qualcomm launched a brand new function for the third era Sensing Hub, the All the time-on Digicam, which has now turn out to be the All the time Sensing Digicam. The All the time-on Digicam allowed the telephone to routinely lock when the person doesn’t take a look at it or get up every time the person look on the sleeping telephone.
With the brand new function, the digital camera can acknowledge and course of a QR code positioned on the optical module when the smartphone is asleep (+show off), with the earlier processor, the telephone needed to be turned on to handle a QR code.
Addition of a second AI processor with 50% extra reminiscence
Qualcomm has doubled the Sensing Hub’s AI computing capability by including a second AI processor. On prime of that, 50% extra inner reminiscence is now accessible. The additional reminiscence permits the system to run new AI fashions which had been beforehand unavailable but additionally higher variations of those that existed earlier than.
Qualcomm talked about 17 AI-based actions tracked by the brand new Sensing Hub, and those which caught our consideration are [human] Exercise Recognition, Voice Activation, and Eye-Monitoring.
Hexagon Direct Hyperlink and Cognitive ISP
Qualcomm launched Hexagon Direct Hyperlink for the primary time, a function that gives devoted bodily communication channels (bi-directional buses, in {hardware} lingo) to different logic blocks such because the GPU, the reminiscence, and the Spectra ISP.
Alongside Hexagon Direct Hyperlink, the chip producer introduced its first Cognitive ISP, a compute unit positioned inside Hexagon that works in reference to the Spectra ISP for quicker processing of the AI-driven imaging options.
Snapdragon Sight: upgraded digital camera efficiency with Cognitive-ISP
Cognitive ISP for higher digital camera efficiency
The Cognitive ISP, positioned within the Hexagon AI co-processor, communicates in real-time with the Spectra ISP that processes the pixels captured by the digital camera. The Cognitive ISP executes the A number of Semantic Segmentation AI mannequin on the photographs despatched by the Spectra ISP and tells the Spectra to use completely different image-enhancing filters on the completely different recognized zones of the picture (as much as eight segments).
The Cognitive ISP can find boundaries and acknowledge objects in a picture similar to faces, our bodies, pores and skin, garments, sky, crops, flowers, cats, seashores, buildings, and extra.
This new function, named Realtime Segmentation Filter, permits the system to exactly regulate colours, contrasts, and any facets of pictures to every phase of the picture, in real-time. Builders can choose completely different configurations and filters.
In different phrases, the Cognitive ISP is the mind, and the Spectra ISP is the muscle.
The brand new structure permits the digital camera system to obtain the segmentation filter rather a lot quicker than earlier than, and processes AI filters in real-time, even earlier than the person presses the seize button, in accordance with Qualcomm.
Graphics and Gaming – Snapdragon Elite Gaming
On the Snapdragon Summit, Chris Patrick, SVP and GM, Cellular Handset, Qualcomm, stated that the brand new Adreno graphics processing unit (GPU) brings a 25% enhance in graphics rendering efficiency than the earlier era whereas delivering 45% higher energy effectivity.
This implies the baseline efficiency will enhance for almost all apps that depend upon the GPU, like video games.
Adreno GPU Show
The Adreno subvisual system additionally consists of the show, and Qualcomm introduced the help of HDR Vivid, a brand new HDR customary launched in March 2021 by the China UHD Video Trade Alliance (CUVA). HDR Vivid and Adaptive HDR are the most recent additions to the opposite codecs already supported by Adreno GPU Show, together with HDR10, HDR10+, and Dolby Imaginative and prescient HDR.
Adreno GPU for video games
Adreno GPU would be the first cell platform to help Unreal Engine 5’s Metahuman, a framework that enables sport builders to create ultra-realistic people programmatically. Unreal Engine 5’s Metahuman characters had been beforehand solely usable in desktop video games. That’s a testomony to Qualcomm’s graphics software program’s maturity.
The brand new-gen Adreno helps Vulkan 1.3 and delivers a 30% Vulkan efficiency increase in comparison with the earlier era.
Actual-time hardware-accelerated ray tracing
{Hardware} ray tracing was the star function of the present, because it pushes realism in video games to the following degree. Bringing real-time ray tracing to cell gaming is a giant deal, as it’s compute-intensive, and solely highly effective gaming rigs can render the extra superior ray tracing strategies at excessive framerate, like world illumination for the entire 3D scene.
On Snapdragon 8 Gen 2, sport builders can combine fundamental ray tracing strategies similar to delicate shadows and correct reflections. The standard rendering strategies similar to shadow maps yielded arduous shadows as a result of they weren’t almost as correct in comparison with ray-traced shadows. Earlier reflections rendering strategies similar to screen-space reflections had been restricted and couldn’t mirror an object that was off-screen. Ray tracing can.
Briefly, ray tracing mimics the sunshine’s conduct in the true world by following the trail of sunshine in a 3D world from the digital camera by way of the objects within the scene and to an eventual mild supply.
Dave Durnil, World Head of Gaming & Snapdragon Studios, Qualcomm, confirmed us a cool demo from the favored sport Justice On-line Cellular with the ray tracing on and off. We may clearly see the distinction, with ray tracing, the reflections within the water and on the curved objects had been practical and we may observe the delicate shadows.
He advised us that Struggle Thunder Edge and Blue Reflection video games for Android will function Adreno-accelerated ray tracing.
Snapdragon Sound: dynamic spatial audio with head monitoring
Sarah McMurray, Employees Supervisor, Product Advertising and marketing, Qualcomm, launched Spatial Audio with dynamic head-tracking, a brand new function of the Snapdragon 8 Gen 2 that delivers extra practical 3D sound with low motion-to-sound latency. Spatial Audio is a expertise devoted to immersive gaming and multimedia experiences.
Connectivity: 5G AI and Wi-Fi 7 help
5G Modem-RF System
The 5G connectivity’s enhancements revolve round three new options. The primary is the mixing of a “5G AI Processor” compute unit contained in the 5G system. This primarily helps with “tuning” the 5G modem parameters to acquire optimum efficiency in any state of affairs. It’s the closest you may get to having a (human) modem engineer tweaking issues continuously. AI may additionally assist with sign error correction to keep away from pointless knowledge re-transmission.
Subsequent, the 4X service aggregation additional enlarges the info pipeline accessible for 5G communications, leading to increased peak downloads (a powerful 10 Gbps).
Lastly, it’s doable to make use of two 5G SIM on the similar time, due to the 5G Twin SIM Twin Lively function. It opens the door to much more knowledge parallelism, however you would possibly find yourself paying two subscriptions in fact.
FastConnect Wi-Fi 7 and Bluetooth connectivity system
Snapdragon 8 Gen 2 comes with Wi-Fi 7, the upcoming customary for dwelling connectivity. Qualcomm makes use of extraordinarily superior strategies similar to high-band multi-link to make use of as a lot of the accessible spectrum as doable.
The corporate says its Wi-Fi can attain 5.8 Gbps and, extra importantly, maintain a latency under two milliseconds in a sustained method. Low latency may persuade wired ethernet customers to lastly change to Wi-Fi.
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