john-con

Thank you very much @JColvin and @zygot for your help and clarification.

Hello together, sorry for the stupid question, but I have hard problems finding the speed grade of two artix-a7. I bought the Arty-A7 and the Basys 3 board. Unfortunately, I cannot find their speed grade (-1, -2, -3L or whatever). The xilinx sources say, it should be written on the chip, but stupid me cannot find it. Can anybody help me further, please? Thank you and best regards, john