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Details about AMD Ryzen Phoenix APUs leak with talk of Radeon iGPUs containing up to 24 RDNA 2 CUs

AMD's Phoenix APUs are rumoured to feature Zen 4 and RDNA 2 cores. (Image source: AMD)
AMD's Phoenix APUs are rumoured to feature Zen 4 and RDNA 2 cores. (Image source: AMD)
Reportedly, AMD plans to release next-generation APUs with Zen 4 cores and double the CUs that it currently offers in the Radeon 680M. While tipped to remain on the RDNA 2 architecture, the iGPUs are expected to deliver enough performance to serve as alternatives to entry-level discrete GPUs.
AMD Laptop GPU

AMD made the leap to integrate its RDNA 2 architecture within its APUs with the Ryzen 6000 series, finally leaving the older Vega architecture behind. Currently, AMD has released two RDNA 2-based iGPUs, the Radeon 660M and the Radeon 680M, that feature 6 and 12 Compute Units (CUs), respectively. According to Red Gaming Tech, AMD is planning to expand the capabilities of its iGPUs even further soon, starting with next-generation APUs.

Codenamed 'Phoenix', Red Gaming Tech alleges that these APUs will also rely on the RDNA 2 architecture. While the YouTuber mentions that he has 'also been told RDNA3', he thinks that RDNA 2 is the more likely option of the two. Supposedly, AMD is developing its Phoenix APUs as an alternative to entry-level discrete GPUs, albeit not those released for desktops.

Purportedly, Phoenix APUs will launch with 16-24 CUs, theoretically up to double the performance potential of the Radeon 680M. Red Gaming Tech adds that these iGPUs will not include Infinity Cache, a caching system that can be found in AMD's latest desktop and laptop GPUs. Instead, Red Gaming Tech believes that Phoenix APUs will have a unified CPU/GPU L3 cache, along with a unified memory space like the PlayStation 5.

Allegedly, Phoenix APUs will debut until 2023, at the earliest. Hence, AMD is expected to base them on Zen 4 cores built on a 5 nm manufacturing process. In comparison, AMD's new Ryzen 6000 laptop processors utilise Zen 3+ cores, such as the Ryzen 7 6800U and the Ryzen 9 6980HX. While the Zen3+ architecture does not contain many changes from Zen 3, AMD has integrated new features like USB 4 (40 Gbps) and PCIe Gen4 support, among others. 

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2022 04 > Details about AMD Ryzen Phoenix APUs leak with talk of Radeon iGPUs containing up to 24 RDNA 2 CUs
Alex Alderson, 2022-04-21 (Update: 2022-04-21)