Well, going 12 slower clocked SMs that have more cores per SM can give you the paper specs of 18 CUs with less cores that is clocked higher.
And Steam deck
is less CUs and less cores and clocked way higher than both would ever be. So the power curve goes up a lot.
I think the best example of this is a console that’s currently on the market, the XBox series X and the PS5.
Microsoft opted for two things with this system, a wider design and lower clocks. They achieved as a result a system that’s quieter, can be cooler and can draw less than the slightly less performant system.
Sony opted for a system that is clocked higher, but is narrower than the Series X. As a result they needed to accommodate that with adequate cooling and even used more luxurious cooling that can leave the system more vulnerable if the
Liquid Metal in the PS5
spills.
Sony’s reason was focused on the cache scrubbers from their presentations which is their own thing and not used in RDNA of any kind.
A faster GPU has faster cache and faster scrubbing so continuous data is streamed for the system and improve its performance as best as they could.
Microsoft has a faster (split) memory on the other hand because they went wider, faster than the PS5’s peak
448GB/s vs the XBox Series X
560GB/s.
Microsoft of course went with a tower design for their console (it also feels very dense in hand), while the PS5 has that super big chamber for the cooling. The whole system is a result of what Sony can deliver, and if they felt that they needed a large chamber to cool the whole device that’s what you got. Oh and they have that soldered SSD that
gets incredibly hot. But said SSD is also, that’s right, really fast.
As I’ve mentioned before, PS4 is seen as a pinnacle in performance for a portable device for the very wide market from what I can tell from the casuals and the hardcore, I haven’t seen the video clip but I’m assuming they are looking at the ROG Ally or the Steam Deck for a point of comparison. No one really cares about above that, so you are in the realm of diminishing returns. Partly because developers were able to do magical things with the PS4 and it looked adequate or exceptional to many. To many, the PS4 is their peak, and anything after is seen as a medium level of improvement.
And yes it is true that Nintendo will aim for efficiency within a 15W power envelope, because they have to appeal to the wider market. However, I don’t think it needs to be said because it’s obvious but while DF are generally favored with their technical analysis; they
are not omniscient or are correct on every thing, and sometimes have pushed ideas or comments that don’t make sense contextually, have backtracked, or use their own bias to come to the conclusions rather than awaiting for the final tally of all of the numbers.
If Nintendo can achieve their goal of being very efficient and it so happens that they are able to achieve PS4-like performance in portable mode, all the better and they will take that. Why? Because they don’t lose anything by taking this. Their main goal is efficiency, if it aligns just fine they will take it. They aren’t going to intentionally diminish it to a lower performance target, because 1) it can be less efficient, and 2) they have nothing to gain by doing this.
The Tegra X1 in the switch was criticized by hardcore members of the gaming community because to them “Nintendo intentionally clocked the switch lower”, but the OG switch was only able to deliver 2H at the most extreme in terms of battery life.
No one would like that. The
Steam Deck is criticized right now because of the battery life it has that people focus on, that it can be as low as an hour and some change.
Let’s look at a different console for instance: the
Series S consumes 74W as per Microsoft when active in gaming.
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But the Series S also has the same memory, and it also has an SSD. And it’s also clocked high for say, what a portable would be. And it’s also on 7nm. And also has to power a larger fan, etc. the 74W for what I assume is the whole system is pretty fine I think when you factor that it’s not 74W just for the SOC, it’s 74W for the whole device.
However
this Reddit post seems to show that it can actually be lower than that
of course, Nintendo isn’t going to deliver something like that anyway.
But anyway, that’s enough from me for now.
Edit: added links