Thursday, May 27th 2021
AMD's 2022 Ryzen "Raphael" Zen 4 Processor Packs 20% IPC Gain
AMD's second processor microarchitecture on the Socket AM5 platform, the Ryzen 7000 "Raphael," could introduce a 20% IPC gain over its predecessor, according to a report by Moore's Law is Dead. The processor debuts the company's "Zen 4" microarchitecture, which clocks IPC gains over the rumored "Zen 3+" microarchitecture that the Ryzen 6000 "Rembrandt" processor debuts with, on Socket AM5. The upper limit of AMD's core-counts appear to remain at 16-core for the flagship part. With "Zen 4" CCDs (8-core chiplets) being built on 5 nm, the source predicts a 50% performance/Watt gain. The chips could also introduce AVX-512 support. The Ryzen "Raphael" processor is due for 2022.
Sources:
Moore's Law is Dead (YouTube), Wccftech
27 Comments on AMD's 2022 Ryzen "Raphael" Zen 4 Processor Packs 20% IPC Gain
MLiD is not stating anything that isn't already known IMO if you can believe AMD and Intel.
As we continue to advance, we will be facing diminishing returns as we scale towards cache misses and branch predictions. But that's not the end of the line for single threaded performance, we can scale much further if we mitigate the causes of the pipeline stalls, especially considering the relative cost of a pipeline stall is increasing as the CPU gets wider execution. I know Intel is researching "threadlets", and AMD is probably experimenting as well. If they manage to engineer a solution which avoids completely stalling and limits the scope of pipeline flushes, they could unleash a sizable performance gain, and probably result in IPC gains in the range of ~2-3x.