How to change CPU frequency in CCR2004-16G-2S+PC?

You may not remember that but you specifically told me to NOT buy CCR2004-PC. I just found this thread which I completely forgot about XD

Thread can be found here:
http://forum.mikrotik.com/t/ccr2004-1g-12s-2xs-are-there-any-before-you-buy-caveats/163377/1
EDIT: srr, it was @sirbryan who told to NOT get passively cooled one xD

As a result I have CCR1009-PC, CCR2004-PC and CCR2004-12S+ and instead of those two CCR2004’s I could probably just get CCR2116 for price of those and get better results XD (of course I only need one router)
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I’m not entirely blaming for bad purchase as choice because there’s nothing else really that I could/would buy instead (since I kinda need this form factor anyways). I’m just salty that CCR2004-PC doesn’t have higher performance. (I don’t think I would buy RB5009UG which seems to be the only alternative because I’m using two optical uplinks)

Since it’d be cool if this thread ended with some… more productive conclusion than hurr durr CCR2004-PC sucks I’ll try to perform some benchmarks for my use case before I return CCR2004-PC and post results here. CCR1009-PC vs CCR2004-PC vs CCR2004-12S+ (which should perform more or less the same as CCR2004-RM for my use case).