Why Can’t PS5 Do Ray Tracing at 60FPS?
A Technical Exploration of Realism and Rendering
When the PlayStation 5 was announced, it came loaded with promises of unprecedented levels of realism, courtesy of its powerful custom AMD Navi GPU. Ray tracing, a revolutionary rendering technology that simulates real-life light behavior, was explicitly highlighted as a key capability of the PS5’s architecture. So, is it possible for the console to render at 4K resolution at 60 frames per second with real-time ray tracing enabled?
The answer lies in an analysis of the underlying requirements of ray tracing, computing-intensive physics, and rendering workloads. As it stands today, the technology still operates outside the realm of seamless frame rates at ultra-high definition settings.
Limiting Factors: Why 1440p with Ray Tracing is More Likely Than 4K 60 FPS
Several hurdles need to be overcome for ray tracing at 4K, 60 FPS on modern gaming consoles. Let us dissect the constraints that arise when attempting to run compute-bound workloads:
- GPU Horsepower: PS5’s Power-Dense Navi GPU Won’t Cut It (On Its Own) While having an impressive 8 cores and 12 memory units, the Navi GPU is ultimately bottlenecked in terms of computing 1 for 12 (CUDA/OpenCl style) on PS4 levels. No magic solutions are available yet; custom firmware and workarounds (e.g., rasterized rendering as an enabler) cannot effectively boost performance to reach targeted specifications (PS 4K ray tracing & 60 FPS target) without compromise or serious performance degradation for most rendering styles.
27-Mar-20.
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