The irony also being that AMD was the first to implement, in January 2014, ARM A57 cores, which they did for a server chip. Timing was close.
Not even close, PS4/XB1 APUs were taped out in 2012.
IIRC, Jaguar and FX (Piledriver?) CPUs had similar IPC, but Jaguar had much lower clocks.
Cell/Xenon had way worse IPC (1/5), less general-purpose cores, lack of OoO:
They only excelled at SIMD/FP workloads (to make up for the lack of GPGPU compute in RSX/Xenos). Most people who say "Cell was faster than Jaguar" don't even know what the fuck they're talking about.
P
Panajev2001a
is right when he says the majority of the transistor budget is allocated to the GPU and the CPU barely gets 30% of that (PS4 APU cost $100, so the Jaguar CPU only cost $30).
For 30 bucks it wasn't that bad (the best you could buy for $30 on PCs back then was a dual-core Celeron, which wasn't a match in MT workloads, even though it was faster in ST) and it forced devs (see: Doom 2016/Doom Eternal/Gears 5/Uncharted 4) to adopt multi-threading and a GPGPU offload mindset (ND already had experience from the Cell SPU/Uncharted 2 era).
Even on PCs it's very common to pair a $100 CPU (12400F) with a $600 GPU (RTX 4070). It's a waste of money to buy overly expensive CPUs for a marginal improvement in framerates, while it does make sense to buy a faster GPU and invest in AI upscaling (DLSS, XeSS, FSR4, PSSR).
I think PS6 will stick to some sort of 8-core Zen 5 or 6, with cut-down L3 cache and maybe cut-down AVX512 units (I sincerely hope not, since full fat AVX512 is a boon for PS3 emulation and Sony knows they desperately need to replace those decade-old PS3 server motherboards on PS Now cloud).
TBH, the reason we get more 60 fps games in the PS5/XSX era is because game devs cannot afford to max out graphics/eye candy without it taking a toll on them (ballooning AAA budgets + crunch).
Zen 2 may have helped a bit (probably not that much, since many people consider it "Jaguar Vol2"), but I believe AAA dev costs give a better explanation.
It was always possible to make 60 fps games from the get-go regardless of CPU horsepower (hell, it was possible back in the 80s with Motorola 68k, so why not with Jaguar?).