Nice job. I wonder if the 80mm fan blowing in made most of the difference for the video card temps? That's such a good idea I might try it w/some smaller 60mm fans.
Thank's , the fan did -1,5c (out of -5c total on the GPU) the rest is the exhaust part, i did try with just the fan before even doing the exhaust.
Another thing is that the exhaust does give me cooler cpu,vrm and ram temps, just the fan made no difference for that.
It does not show in the video but i have done a ton of testing with different fan setups before doing the exhaust mod.
But as a quick mod you could just add a fan, i used a 80mm pwm fan from noctua.