The PS5 unreal Engine 5 demo is 1440p@30fps most of the time due to the GPU.
Read more: https://www.tweaktown.com/news/7251...an-at-1440p-30fps-with-dynamic-res/index.html
And according to Sweeney:
It also required dynamic resolution scaling, which adjusts resolution on-the-fly to lock in a consistent frame rate. For reference, most of the PS4 Pro's 4K games have dynamic resolution scaling and few are native 4K.
Epic's VP of Engineering Nick Penwarden says the demo hit 1440p 30FPS on PlayStation 5 with dynamic resolution scaling enabled--the resolution spot between 1080p and 4K but at the lower FPS range for these kinds of action-adventure experiences.
"Interestingly, [Nanite] does work very well with our dynamic resolution technique as well. So, when GPU load gets high we can lower the screen resolution a bit and then we can adapt to that. In the demo we actually did use dynamic resolution, although it ends up rendering at about 1440p most of the time,"
Read more: https://www.tweaktown.com/news/7251...an-at-1440p-30fps-with-dynamic-res/index.html
And according to Sweeney:
"A number of different components are required to render this level of detail, right?" offers Sweeney. "One is the GPU performance and GPU architecture to draw an incredible amount of geometry that you're talking about - a very large number of teraflops being required for this.