When your GPU runs out of VRAM, the system does not crash gracefully. It via the PCIe bus. That pipeline is roughly 10x slower than native VRAM.
If it is maxed out (red line), you are not CPU bottlenecked. You are VRAM bottlenecked. The only fix is a bigger graphics card—not a faster CPU. When your GPU runs out of VRAM, the
| Component | Recommendation for MFR | Why | | :--- | :--- | :--- | | | 16GB (e.g., RTX 4080/4090) | Allows 4-6 frames to cache textures simultaneously. | | System RAM | 64GB (128GB for 4K+) | MFR copies data from system RAM to VRAM constantly. | | CPU | High-clock (4.5Ghz+) 12-16 cores | MFR scales well, but raw speed still matters for single-frame dependencies. | The Bottom Line You can benchmark Multi-Frame Rendering by looking at Task Manager. If your CPU is pegged at 100% but your render time is still slow, check your Dedicated GPU memory usage. If it is maxed out (red line), you are not CPU bottlenecked