Ok I know you guys could not get any sleep, so I did a couple more City sample vids on my 970+2500k and 8600k+1070. (it goes without saying,non monetized vids)
The GTX 970 gets a very strict video ram message right off the bat, kindly telling you to gtfo and that you are missing ~1.2GBs of video ram and that's at low settings with 50% res! And I see in MSI Afterburner a full 3950MB video ram usage, so that number does not account for the slow 512MB I guess! Still, even for a pixel count a little above 720p, for a next gen demo, for a card that is nearing 8yo, ain't too bad I guess. It might still be able to run some lighter UE5 games.
I honestly expected the 2500k to blow up in this demo, but it didn't. I mean OK it did hover around 80% cpu usage for less than 20fps and that @5Ghz, but considering it is currently running through its 12th year since launch, a cpu from the PS3 era, it is doing great really! It will be interesting to see some actual UE5 games on it, maybe with more limited world than this demo.
The 8600k+1070 run, was the smoothest of my systems so far, in terms of framerate, even if it was at 1080p low. I had to limit it at 30fps, because the frametimes were spiking like crazy and was getting on my nerves. xD
The 8600k at least for the low settings, did OK and I think it could do 60fps at 5GHz. It was not even overclocked for this test. In real games I believe it will do much better but this remains to be seen.
The GTX 1070 is losing 1/3 of its perfromance for max settings but overall it's doing ok. It ain't the newest card around either. It is also a 6yo part now. Time flies!