8x1.6GHz = 12.8GHz and this is 43 times higher than 299MHz PS2 CPU
However, you can't say that PS4 is 43 times faster because of that. PS2 and PS4 CPU are based on different architecture. So you can't compare them with just GHz and number of cores, just like you can't directly compare AMD and Intel CPU with GHz and cores.
8x1.6GHz = 12.8GHz and this is 43 times higher than 299MHz PS2 CPU
However, you can't say that PS4 is 43 times faster because of that. PS2 and PS4 CPU are based on different architecture. So you can't compare them with just GHz and number of cores, just like you can't directly compare AMD and Intel CPU with GHz and cores.