In June 2014, AMD set a so-called “25X20” goal of increasing the energy efficiency (performance-to-power ratio) of APU processors by 25 times by 2020! AMD was not as beautiful as it is now – the bulldozer architecture was embarrassing, the huge acquisition of ATI and made a Fusion Processor, but the market conditions were not as ideal as expected, the discrete graphics market and NVIDIA also struggled.
So after AMD came up with this ambitious goal, the most sceptical voices were in the majority – a small survey by Drive House showed that less than 19 percent thought AMD could do it, compared with 60 percent who thought it was bragging, and 21.5 percent thought it would only be achieved.
What do you guess? AMD’s mobile APU processor not only fulfilled this promise, but also exceeded the task!
Based on the Kaveri APU released in early 2014, this year’s latest Renoir APU has a 31.77 times energy efficiency ratio, well above its original target of 25 times, according to AMD.
Kaveri APU was still using a 28nm process, roller CPU architecture, GCN GPU mechanism, flagship mobile model FX-7600P with four core four threads, main frequency 2.7-3.6GHz, while integrating eight Radeon R7 GPU units (448SP), frequency 686MHz, support dual-channel DDR3L-1600 memory, maximum capacity 8Wcapacity design, thermal 35W.
Based on its energy efficiency 1, the flagship model specifications, performance and energy efficiency ratio of each generation of mobile APU are as follows:
As you can see, Raven Ridge 2017 has achieved a leap in energy efficiency with a new 14nm process, Zen CPU architecture, and Vega GPU architecture, equivalent to up to 8.81 times Kaveri’s.
This year’s latest Renoir brings a historic leap forward in energy efficiency with the 7nm process, Zen 2 CPU architecture and upgraded Vega GPU architecture, from 10.88 times the previous generation to 31.77 times, and it has to be said that it’s a really nice one!
In addition, the second-generation Ryzen APU Picasso’s energy efficiency improvement is very general, after all, 12nm compared to 14nm, Zen plus compared to Zen no essential changes, Vega GPU is completely unchanged and scaled down.
What does 31.7 times energy efficiency improvement mean? AMD also lists an interesting set of data:
– 84% reduction in actual energy consumption
– 80% reduction in the calculation time for specific tasks by an average of 80%
– If you upgrade 50,000 APU notebooks from the 2014 model to 2020, you will save 1.4 million degrees of electricity over three years, or reduce CO2 emissions by 1,000 tons, or grow into 16,000 trees.
– If placed in the automotive industry, it is equivalent to 100 horsepower, 300 km to 500 hp, 1890 km.
So will AMD set similar energy efficiency targets in the next 5-10 years? AMD says it does have new energy efficiency plans, but it’s not easily available for details, and times have changed and energy efficiency is not calculated in the same way.