Before revision: Operating System Support Xilinx officially supports Microsoft Windows Version 7 64 bit, Red Hat Enterprise 4, 5, & 6 Workstations (32 & 64 bits) and SUSE Linux Enterprise 11 (32 & 64 bits).
After revision: As of ISE Design Suite 13,Operating System Support Xilinx officially supports Microsoft Windows Version 7 64 bit, Red Hat Enterprise 4, 5, & 6 Workstations (32 & 64 bits) and SUSE Linux Enterprise 11 (32 & 64 bits).