ATI Technologies has been consistently downplaying Shader Model 3.0 supported by NVIDIA Corp.’s GeForce 6-series GPUs since the release of the GeForce 6800 product in April, 2004. An internal document allegedly made by ATI stated: “Steer people away from flow control in ps3.0 because we expect it to hurt badly. [Also it’s the main extra feature on NV40 vs. R420 so let’s discourage people from using it until R5xx shows up with decent performance...”.

這段很清楚的顯示了ATi 內部其實早已心知肚明不是這麼一回事了.
SM3.0無用論只是拖時間用的.