Tcc Wddm Better May 2026

nvidia-smi -q | findstr "Driver Model" (If you see "WDDM" – you are in slow mode)

nvidia-smi -g 0 -dm 1 (0 = WDDM, 1 = TCC) tcc wddm better

By: Technical Deep Dive Team

Reboot the machine.

| Test | WDDM Mode (Standard) | TCC Mode | Improvement | | :--- | :--- | :--- | :--- | | | 3,450 | 4,120 | +19.4% | | CUDA Memcpy (Host to Device) | 12.4 GB/s | 25.1 GB/s | +102% (Bypasses PCIe limits imposed by WDDM) | | Kernel Launch Overhead (100k launches) | 2.4 seconds | 0.9 seconds | -62% | | Multi-GPU Scaling (2x GPUs) | 1.6x speedup | 1.95x speedup | Near-native NVLink speed | nvidia-smi -q | findstr "Driver Model" (If you