lightchris
Member
Can someone explain what exactly the teraflops mean? 4TF, 6 TF its all Chinese to me.
That's actually pretty simple: The maximum number of floating point operations the GPU can do per second.
"Tera" stands for trillion, so we are talking about trillions of operations per second. Those numbers are that high because current GPUs can have up to a few thousand small processing cores (mostly called shader units or similar).
How to get to the exact numbers is simple to calculate too: You just multiply the number of shader units by their clock speed, and multiply that by 2 (because each shader unit can perform one addition and one multiplication at the same time).
For example, assume a GPU with 2560 shader units and a clock speed of 1.2 GHz, that would make 2560 * 1.2 * 2 = 6144 GFLOPS or 6.144 TFLOPS (about the same as the rumoured Scorpio).
Now how much that means for actual real world gaming performance isn't as easy to answer as there can be many more important factors. It definitely is an indication though, and in practice, given similar GPU architectures one can predict the actual performance pretty well based on the FLOPS.