does gtx 570 support avc encoding??

recently, I had a sample to encode avc use cuda, but the gpu is gtx 570, cuDeviceComputeCapability this function returns major = 2, minor = 0, and it’s not meet the condition ((((SMmajor << 4) + SMminor) < 0x30)), so if there is any solution, please let me know, thks alot