VideoCardz reports the Linux patch does not have an entry for L3 cache, only L1 and L2 cache. Whether that means that Rembrandt has no L3 cache is uncertain.
The APU will require a new FP7 socket, which will force laptop makers to adopt existing designs for new motherboards and possibly power and thermal characteristics of the “Yellow Carp” APU series. This is understandable, as Rembrandt brings major changes not only to the CPU and GPU core but also I/O. Rembrandt will be the first AMD APU to support DDR5 and LPDDR5 memory standards. It will also enable PCIe Gen4 support, which is something that Cezanne currently does not.The site also reveals Rembrandt wil have six Compute Units (CUs) per Shader Array, and not eight.