In fact, Zen 5 would have an improved CPI of 10%?


As time goes by, the rumor mill continues to churn about AMD’s next-generation processor, Zen 5. While some wild rumors mention IPC gains of up to 40%, other, much more measured rumors put the figure at 10%.

Lonovo China’s manager more measured on Zen 5’s IPC gains!


On a Weibo post, Lenovo China’s manager indicated that overall IPC(Instruction per Cycle) gains would be closer to 10% than 40%. He did mention, however, that on Cinebench 23 in 1 thread, gains would be higher than 10%. However, Ryzen CPUs are at ease on this benchmark.

Last but not least, it’s important to know what we’re talking about, as this new generation promises to be innovative in many respects. Indeed, with the advent of artificial intelligence, AMD can’t ignore this sector, and Zen 5 will incorporate optimizations linked to this activity. Secondly, we’re talking about 10%, but the CPUs aren’t even out yet… This 10% may have been measured on Early copies, which do not necessarily represent their final performance.

As Wcctech points out, 10% would represent the smallest gain in generational IPC, since the average is generally between 13% and 15%. The biggest slap in the face was the switch from Zen 2 to Zen 3, as our colleague points out.

Behind the scenes, AMD is making efforts to improve its architecture. As we reported here, the reds will be offering a new 512-bit FPU, notably to improve performance on floating-point calculations. Then there’s a bigger L1 DTLB cache, more execution pipelines, etc.

It remains to be seen how this will translate into actual performance.