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They're not really directly comparable due to the architectural differences, right? For pure rendering workflows I'm sure the 4090 is faster, but for anything t
by lukasb 3y ago
They're not really directly comparable due to the architectural differences, right? For pure rendering workflows I'm sure the 4090 is faster, but for anything that hits the CPU ...
- spookie 3y agoYes, the tiled-based architecture of their "GPU" is undeniably less performant. Even comparing to lesser GPUs.
- zeusk 3y agoNvidia is tile based since Maxwell
- spookie 3y agoYes, I should've been more specific. Mobile GPUs often employed in ARM architectures often use a technique called "Tile-Based Deferred Rendering" (TBDR). This involves not just splitting the frame into tiles but also delaying the actual shading operations. This two-step approach minimizes overdraw but can create bottlenecks in scenes with intricate geometry or advanced lighting, shadows, and reflections. Nvidia's approach doesn't have this.
- wtallis 3y agoHow is the deferred rendering in TBDR different from the deferred shading and deferred lighting that have almost completely supplanted forward rendering in commercial games and engines?
- cztomsik 3y agoWhy exactly is tile-based a bad idea? Most rendering engines are tile-aware already.
- spookie 3y agoSee my response to the sibling post