The Crossfire X technology in the current development stage allows the use of four graphic chips in one system. NVIDIA can propose the union of three chips GT200 with the 3-Way SLI technology . Associates report that two overclocked to 778/3920 MHz video cards r700 could collect in 3DMark vantage test x12515 points.
A system on base of three video cards GeForce GTX 280 can also reach similar result , but here four RV770 will cost as two NVIDIA 280 GTX.