is a hardware clock mechanism in NVIDIA GPUs (starting with Turing architecture) designed for real-time, low-latency workloads .
Under , the GPU is a shared resource managed by the Windows OS. The GPU Scheduling engine decides which process gets access to the GPU and when. While this is excellent for multitasking (running a game while browsing the web), it introduces latency. Every time a compute kernel is launched, the OS must context-switch, save the state of the GPU, and manage memory. This creates "jitter"—unpredictable delays that kill performance in time-sensitive applications. tcc wddm better
If your computer only has one GPU and you plug your monitor into it, you must use WDDM. Switching a single GPU to TCC will black-screen your display. is a hardware clock mechanism in NVIDIA GPUs
: In scenarios where AI models don't fit entirely in VRAM (requiring constant block swapping with system RAM), TCC has been shown to deliver speeds up to 2x to 3x faster than WDDM. While this is excellent for multitasking (running a
Here's a rough estimate of the performance difference between TCC and WDDM:
If you use your PC for gaming, video editing (Premiere, Resolve), or 3D modeling (Blender, Maya), you . Switching to TCC will turn off your screen. 3. The Hybrid Setup
TV and CCTV