Question

What is the difference between Xilinx and vivado?

Answer 1

In short: * ISE/EDK are the old tools that are to be used for all Virtex-6 and older devices and that can be used for some small/middle-size Virtex-7 devices. * Vivado is the new tool that only supports Virtex-7, UltraScale and all more recent families. ... So you still have to use ISE for them (e.g. Virtex-5).