Back then we also sacrificied single core performance for the sake of having more cores. This discussion is just a repeat of the whole single core vs multicore CPUs.
The software that P-cores are designed for don't really use more than 8 cores anyway atm. That's also why all upcoming known Intel architectures keep 8 P-cores and scale up the E-cores.
Unfortunately a lot of software just doesn't scale well so there's a benefit to use big cores but they're just not a cost effective use of your silicon. If software wasn't an issue you'd want a CPU that is entirely made up of E-cores as they're just more efficient in die space so you always get more performance. Hybrid brings us more performance as stuff just doesn't scale linearly. It's not 16 P-cores vs 8P+8E cores but 10 P-cores vs 8P+8E cores. The complaints are just based on ignorance. So it remains to be seen throughout trial and error if more cases like this appear.Ĭlick to expand.AMD is probably going to follow Intel with Big.Little as it's the best way to scale up multicore CPU performance. This suggests that more applications can take advantage of disabling E-cores, especially if the application has support for AVX-512 instructions, where only P-cores can execute them. In God of War: Ascension, the Rocket Lake processor produced 68 FPS, while Alder Lake produced 78 FPS, representing around 15% improvement. The Alder Lake chip had disabled E-cores. The team benchmarked Intel Core i9-12900K, and Core i9-11900K processors clocked at 5.2 GHz for tests. This means that latency in the ring bus is presumably lower. With E-Cores disabled, and only P-cores left, the processor can execute AVX-512 and gets a higher ring ratio. Thanks to the team behind the RPCS3 emulator, we have some information and tests that suggest that turning E-cores off gives a performance boost to the emulation speed and game FPS. Officially, Alder Lake processors don't support AVX-512, as the processor's little E-cores cannot execute AVX-512 instruction. However, the AVX-512 boost is only applicable when E-cores are disabled as software looks at the whole package.
The P-cores are based on Golden Cove architecture and can execute AVX-512 instructions with ease.
First of all, the Alder Lake processors feature a hybrid configuration with high-performance P-cores and low-power E-cores. According to some testing performed by the team behind RPCS3, a free and open-source emulation software for Sony's PlayStation 3, Intel's Alder Lake processors are enjoying a hefty performance boost when E-Cores is disabled.
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