WDDM is the standard driver model for Windows (7, 10, and 11+). It is designed to manage graphics and display resources efficiently.
TCC mode is "better" for pure high-performance computing (HPC) because it strips away all Windows graphics overhead. Faster Kernel Launches : TCC reduces the overhead required to launch tcc wddm better
Notably, driver versions significantly impact this performance gap: WDDM is the standard driver model for Windows
Open an elevated Command Prompt or PowerShell (Run as administrator) and run: Faster Kernel Launches : TCC reduces the overhead
This suggests that recent driver developments have widened the gap between these two modes.
Slower; often throttled by "block swapping" and OS restrictions None; the GPU cannot output video to a monitor Required for monitors and Windows desktop tasks GPU Compatibility Professional cards (Tesla, Quadro, Titan) All consumer (GeForce) and professional cards Why TCC is "Better" for Compute
If you are running compute workloads on a compatible NVIDIA GPU in WDDM mode, you are leaving 15–30% of your performance, stability, and memory bandwidth unutilized. The fix is free, takes five minutes, and requires only a command line.