I think you're overestimating what kind of hardware PC gamers are buying. Most people are rocking RTX 2060 - RTX 2070S performance cards with an R5 3600 CPU, if that. The ones that have a graphics card faster than a 2070S are a very small portion of users. Unless the hardware equivalent of the XSX all drop under the $300 range for GPU and CPU individually, I don't see the majority of PC gamers having that kind of performance for now.It's always difficult to estimate with any accuracy how fast an individual console conponent precisely is. Not least because it is not individual. It's an integrated system attempting to be compared to a dedicated PC GPU. All of the variable factors you cover in the mixer are valid.
It extends beyond raw performance well into the realm of feature sets, APIs and other updated custom hardware.
I would say raw shading performance is blatantly better than a 5700XT and at least on par with an RTX2080, but not overall as fast as a 2080Ti. Not ray tracing performance, despite them demoing it the performance doesn't look amazing. The die is too small and confirmed there is no dedicated acceleration for DLSS techniques for example.
A big deficit consoles with unified memory must deal with is shared bandwidth, where the GPU had to fight over memory and bandwidth with the rest of the system. Xbox Series X looks to address that with separate buses.
It's a fast machine taken as a whole package. But then again RTX2080 and even the Ti will be old news by the time the console makes it onto shelves, let alone when it has a significant installed user base.
It's always that thing where console gamers claim that'll be faster than the 'average' PC. Yes it will, but that doesn't mean there aren't already millions of PC gamers with 2080 and 2080Ti cards. We're talking about graphics cards that are nearly 18 months old already and due for replacement in another six!
Total current install base of Xbox Series X: Zero. If Microsoft shift an ambitious 15 million in the first year, you're still looking at way more PC gamers with equal or better hardware at that point.
I had this discussion with Xbox One X reveal in 2017. The machine has barely sold as I predicted then. Only few million in well over two years. 5-10m at most. Even by the time it launched there were a zillion people with a GTX1070 or better, which is definitely faster.
As for RT, I'm not sure what was going on in the video. But according to a user on Resetera, the XSX RT capability is better than a 2080Ti, although I have no idea of his calculation/estimates are correct at all;
"We know the RDNA2 design has one RT core in each of its TMUs, we know that amd designs have 4 TMUs per compute unit. So for an xbox series X with 52 CUs, at 1825mhz you've got 52 * 4 * 1825mhz = intersections/second, with a 10 deep bvh you divide that 379.6 billion figure by 10 to get 37.96 gigrays/second.
Do that same math for a 2060, or a 2080Ti, or any other turing gpu, turing has one RT core per SM, so for a 2060 you have 30 SMs, and its official turbo clock is 1680mhz, for 50.4 billion intersections, or 5.04 gigrays/sec, nvidia quotes 5 gigrays.
For a 2080Ti you have 68 RT units, at 1545mhz, for 10.56 gigrays, which nvidia also quotes. "
So the XSX is on an advanced 7nm node it appears. Any idea of how much smaller this is than straight 7nm? TSMC 7nm Enhanced So is this the 7nm+ that we saw in previous AMD slides? Curious to know myself how it compares to regular 7nm. I will say this, I was shocked to see this much power...