needed equivalent xilinx fpgas for Altera Stratix II GX-60

[chetan]

i need the equivalent Xilinx FPGA for the following altera devices.



- Altera Stratix II GX-60

- Altera Stratix II GX-90



in terms of the resources available in these devices (logic, block
ram, dcms, global clock etc) with those available in Xilinx FPGAs.

thanks