A big box with plenty of room where you don't have to design each piece to fit like tetris pieces is probably cheaper than a smaller box where things are tailored to fit perfectly together. If the dev kit leak is any indication, that's all it could be. Head over to b3d where people are showing concern over the rear intake and possible air flow issues. "tower design"=/=automatically better.
Keep in mind those guys aren't idiots like most of us here. They actually know what they're talking about.
On such a small scale, 12" height, stack effect isn't a thing.
It's not a
perfect design, correct. But it's not an
impractical design, either. And whatever design PS5 goes with, won't be a perfect design, either. All designs have at least a few flaws, the pressing issue is that they're only of minor nitpicks and not performance dealbreakers.
Speaking of PS5's devkit design, there's another reason you'd need such ventilation: to cool a GPU clocking 2GHz or higher. Which a 36CU chip would need in order to hit 9.2TF or higher (keep in mind there have been some other rumor spec leaks (nothing hard data though) showing 10.2TF on those same chips, which is also possible via turning on all 40 CUs and clocking them above 2GHz).
And seeing that, again, the Oberon and Ariel GPU testing are the only consistent hard data benchmarking figures that've been leaked for some months now, and have ties to PS-related products (clock speed settings matching PS4 and the Pro), then the leading idea is that the PS5 kit has that level of cooling specifically because of an overclocked Oberon GPU.
ultra fast (costum?) ssd; more powerful gpu than xbox which is already rumored to be around 12tf; more ram (so 18 gigs or more assuming xbox has 16) with higher bandwith; dedicated raytracing hardware
for around 399 - 499 ?
no way
18GB is not logical or sensible on any console's memory bandwidth budget.
Why? Because for starters, there are no 24Gbit (3GB) GDDR6 modules in production. Second reason? Because while you can technically do 18GB on a 256-bit, 320-bit or 384-bit bus, you would (literally) be splitting only one pair of memory ICs into clamshell mode and then going 2 GB/ 2GB.
A single pairing of chips in clamshell mode, while the rest are in full non-clamshell? Who would be that senselessly esoteric with their memory setup in a games console, where you might as well go all or nothing since you're getting components in economies of scale? So that's either 16GB (non-clamshell), or 32GB (clamshell), with a 256-bit bus (which seems to be what PS5 is using).
18GB is a laughable figure. when you understand this.