High-end versions of AMD's next APUs like the AMD Ryzen 9 6900H will combine the Zen3+ cores with a maximum of 12 RDNA2 based integrated graphics CUs. This results in a total of up to 768 stream processors. At the moment, AMD's APUs still use integrated graphics based on the aging Vega architecture.
The same leaker previously confirmed that Rembrandt is the only codenamed listed with mysterious and yet unconfirmed Zen3+ architecture. To this day, there has been no such confirmation on Warhol, which is also rumored to feature Zen3+.Rembrandt is expected to support DDR5 memory too. Presumably, Rembrandt-based APUs will launch in 2022.
Rembrandt is RDNA 2 based with a maximum of 12 CUs ????— ExecutableFix (@ExecuFix) May 8, 2021