Well I made some changes and got my load temps down to 47C vs. the 51-53C I was getting before...

I first tried using another fan casing between the fan and the XP90C and didn't improve anything...

Second removed the clips that come with the XP-90C and made some small brackets that would bolt in the place of them and used the mounting hardware used for the Swiftech 6400V, and increased the contact pressure.. (By the way a much better mounting system)

So, if you can increase your contact pressure on the XP-90C, 90, or 120 it will improve your load temps anyway.....( note, I have also removed my IHS before this, and had to mod the original clip mounting system to maintain the orginal pressure)