PS5 GDC Reveal and PS5 specs/performance Digital Foundry Video analysis : 3.5 Ghz 8 core Zen 2 CPU along with 10.3 TF RDNA 2 RT capable and 16GB GDDR6 RAM and also super crazy fast 5.5 GB/Second S

[SvennoJ]

https://www.eurogamer.net/articles/digitalfoundry-2020-playstation-5-specs-and-tech-that-deliver-sonys-next-gen-vision

DF is already talking about the difference maybe smaller than the 15% based on comparing raw TF numbers, since the clock speed of the GPU is 18% higher. However the CPU runs slightly slower than the Series X (3.5 Ghz vs 3.8 Ghz)
Memory is both slower (than the 10GB) and faster (than the 6GB), all operating at the same speed sitting in the middle.
Biggest difference is the SSD, more than twice as fast (5.5 GB/s instead of 2.4) and also with compression.

But same as Series X, only 16 GB total memory, might be a bit tight.

So different yet practically the same, apart from the vast difference in SSD speed.