Cerny himself stated that PS4 is 10x of any current-gen console.
Anyone who knows what GPU is inside PS3 (gimped down 7800GTX with memory bandwidth of 7600GT) and knows basic math will know that PS4's GPU is at least 10x of PS3, even if you take such misleading parameter as FLOPS (PS4's GPU = 1843 GFLOPS, PS3's GPU = 176GFLOPS), let alone if you look at aggregate benchmarks.







