NEC 2500A & CloneDVD

Does CloneDVD backup at the highest possible burn of 8X automatically? I know it is using 4x because it takes ~16+ minutes to backup, etc. Wondering why I cant check to see what speed it burns at automatically or change it. I want to find out if my new burners will backup at 8X on the two 4X media I own (TDK & TEON both 4x DVD+R). Do I have to use Nero now instead in order to make this happen???