Originally Posted by corky dorkelson
While an 8800GT may offer more in terms of floating point operations, the modern CPU still has more raw power. I would really like to know what you heard that you are basing that off of.
Post processing happens in parallel, and its basically entirely simple floating point.
If you want to perform floating point calculations simultaneously on 2 million pixels, would your rather let 112 cores do it or 12 hyperthreaded cores?
The peak floating point performance of the 8800GT is 5 times that of the 980X. It would finish the calculation before the 980X could even finish transferring the frame buffer to memory.
The CPU doesn't have more raw power, it supports more complex operations, all of which are unneeded for post processing effects.
Also, its not even doing anything. Here's a diff comparing their result with CSAA in Half Life 2, the bright patches basically show where the edges have been smoothed. At most, LSAA is a messy finger smudge, there is a ton of error, where non-edges have been processed.