First Style of the Snapdragon 780G


It’s solely been a few weeks since Qualcomm first introduced its new “premium” vary SoC for 2021: the brand new Snapdragon 780G. The chip is a successor to the Snapdragon 765 which ended up being a fairly profitable and common chip amongst 2020 mid-range and “premium” phase units, powering many units resembling for instance the Pixel 5 and 4a 5G.

Additionally a few weeks in the past, Xiaomi had made a flurry of system bulletins among the many Mi 11 Extremely as the brand new mega-flagship system for 2021. One system we didn’t have time to cowl was the brand new Mi 11 Lite 5G. Past the tremendous fascinating form-factor of a 6.8mm thick system and weighing in solely 159g regardless of its bigger 160.5 x 75.5mm footprint, in addition to larger high quality OLED show, the cellphone differentiated itself by being the very first Snapdragon 780G cellphone available in the market.

We’ve obtained our palms on a evaluate pattern, and wished to dedicate a chunk focusing a bit extra on the SoC, as the brand new chip will probably be powering not solely the Mi 11 Lite 5G, however undoubtedly a complete lot of different mid-range and premium units within the coming months.

Qualcomm Snapdragon Premium SoCs
SoC Snapdragon 765

Snapdragon 765G
Snapdragon 768G

Snapdragon 780G

CPU 1x Cortex-A76
@ 2.3GHz (non-G)
@ 2.4GHz (765G)

1x Cortex-A76
@ 2.2GHz

6x Cortex-A55
@ 1.8GHz

1x Cortex-A76
@ 2.8GHz

1x Cortex-A76
@ 2.4GHz

6x Cortex-A55
@ 1.8GHz

1x Cortex-A78
@ 2.4GHz

3x Cortex-A78
@ 2.2GHz

4x Cortex-A55
@ 1.9GHz

GPU Adreno 620 

 

Adreno 620

+15% perf over 765G

Adreno 642

+50% perf over 768G

DSP / NPU Hexagon 696
HVX + Tensor

5.4TOPS AI
(Whole CPU+GPU+HVX+Tensor)

Hexagon 770
Scalar+Tensor+Vector

12TOPs AI
(Whole CPU+GPU+DSP)

Reminiscence
Controller
2x 16-bit CH

@ 2133MHz LPDDR4X / 17.0GB/s

ISP/Digicam Twin 14-bit Spectra 355 ISP

1x 192MP 
or
1x 36MP ZSL
or
2x 22MP with ZSL

Triple 14-bit Spectra 570 ISP

1x 192MP
or
1x 84MP ZSL
or
2x 64+20MP ZSL
or
3x 25MP ZSL

Encode/
Decode
2160p30, 1080p120
H.264 & H.265

10-bit HDR pipelines

Built-in Modem Snapdragon X52
Built-in

(LTE Class 24/22)
DL = 1200 Mbps
4x20MHz CA, 256-QAM
UL = 210 Mbps
2x20MHz CA, 256-QAM

(5G NR Sub-6 4×4 100MHz
+ mmWave 2×2 400MHz)
DL = 3700 Mbps
UL = 1600 Mbps

Snapdragon X53 Built-in

(LTE Class 24/22)
DL = 1200 Mbps
4x20MHz CA, 256-QAM
UL = 210 Mbps
2x20MHz CA, 256-QAM

(5G NR Sub-6 4×4 100MHz)
DL = 3300 Mbps
UL = ? Mbps

Mfc. Course of Samsung
7nm (7LPP)
Samsung
5nm (5LPE)

On paper, the brand new Snapdragon 780G is a significant improve from the Snapdragon 765G. The brand new SoC options not solely upgraded CPU microarchitectures, really leaping from a Cortex-A76 era to a more moderen Cortex-A78 era, but additionally shifts from a 1+1+4 core setup to a 1+3+4 setup, that means the brand new SoC has double the quantity of efficiency CPU cores. The clock frequency stays at a peak 2.4GHz for the quickest core within the configuration.

This setup is sort of fascinating because it’s fairly much like the center CPU cores of the Snapdragon 888 flagship SoC, which employs the identical microarchitecture at roughly the identical clocks, and each chips are manufactured on Samsung’s 5nm 5LPE course of node. There are variations within the reminiscence setup because the Snapdragon 780G stays on a LPDDR4X interface that’s solely 2x16b large, which is smaller than the LPDDR5 4x16b bus that the flagship SoC will get. There’s additionally variations in caches such because the L3 cache being a lot smaller.

CPU Efficiency & Effectivity

Evaluating the efficiency and energy effectivity of the brand new chip in comparison with not solely its predecessor, but additionally its present era flagship sibling, we must always be capable of paint a greater image of how the brand new chip sits within the aggressive panorama.

In SPEC2006, the brand new chip – albeit working on the identical frequency because the Snapdragon 765G, is showcasing vital efficiency leaps in comparison with its predecessor. We’re seeing roughly +34% efficiency enhancements in each integer and floating level check suites, not fairly 40% as Qualcomm had proclaimed, however that’s additionally an “as much as” determine relying on the workload.

Within the efficiency positioning, we certainly see that the efficiency core of the Snapdragon 780 roughly matches as much as the center cores of the Snapdragon 888, which is anticipated given their related specs. The S888 wins out forward attributable to a stronger reminiscence subsystem.

When it comes to energy and vitality effectivity, it’s an fascinating scenario. When it comes to energy utilization, we see that the efficiency will increase did include a value, as the brand new chip is roughly +20% extra energy hungry as its predecessor in single-threaded duties. As a result of efficiency enhance being larger than the facility enhance nonetheless, the vitality effectivity of the brand new chip is definitely larger than its predecessor, showcasing 8 to 13% much less vitality utilization to finish a job, which ought to have direct results on the battery lifetime of units.

On the whole, the bigger efficiency enhance mixed with a discount in vitality utilization of the brand new SoC implies that it’s a fairly vital generational leap towards the Snapdragon 765.

A bit unrelated to the Snapdragon 780, final month Google had lastly pushed AArch64 variations of Chrome and the system WebView packages, signifying an necessary shift away from AArch32 32-bit period. This really has a bigger impression on benchmarks as newer Arm Cortex microarchitectures have extra vital variations (relative to previous ones) between the 2 execution modes, with the AArch64 mode being extra performant and extra environment friendly. For that reason, we’re beginning with a brand new clear slate of check outcomes with explicitly acknowledged (64b) within the graphs.

Speedometer 2.0 - OS WebView (64b) JetStream 2 - OS Webview (64b)

We’re evaluating the Mi 11 Lite 5G to the Pixel 5 right here because the Mi 10 Lite 5G with the Snapdragon 765G sadly remains to be being deployed 32-bit packages attributable to its decrease 6GB RAM, and we nonetheless need an apples-to-apples comparability.

Within the JetStream 2 and Speedometer 2.0 browser benchmarks we’re seeing +36-43% efficiency will increase in comparison with the Snapdragon 765G, that are vital boosts. The Snapdragon 780G nonetheless clearly lags behind the efficiency of the flagship SoCs, signifying that there’s nonetheless loads of efficiency differentiation available between the segments.

Glorious Consumer Expertise

On the whole, the efficiency leap of the Snapdragon 780G is sort of vital. The brand new CPU microarchitecture delivers giant generational IPC boosts and the truth that the brand new chip has double the large efficiency cores additionally helps out multi-threaded workloads so much.

Fact be advised, it’s an unlimited shift in person expertise because the system undoubtedly feels a lot quicker and snappier than Snapdragon 765G units. It roughly lands in between the Snapdragon 855 and Snapdragon 865 flagship generations when it comes to general system expertise, which isn’t stunning as that’s additionally precisely the place the brand new chip benchmarks itself at.



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