When it gets over 100 Fahrenheit (apart from fall and winter) for the majority of the day and the system spikes a maximum of 69C (roughly 56C average) when it is a nice 55F ambient with a window open, 'deep end' then becomes necessary. And particularly when we're talking about a mobile system, which all have heat dissipation inferiority to begin with, coupled with the inability to open the thing up and apply fresh thermal paste (removing the crap film they put there that doesn't work well enough anyways if we're being frank about it) AND to remove the light buildup of dust between the fan and heat sink (because that would entail the very risky procedure of completely disassembling this particular system, as it is not a fancy back-plate access)... and well, again, "deep-end" becomes not so crazy. Especially considering I honestly and truly cannot afford to replace it with a big, bad desktop right now or indeed likely not for the next couple years or more. So this is the best solution I have. If you have a better one, please do share. Otherwise, this is what I am going to have to resort to.
I will just be happy if it decreases the temperatures from the sensors by even 10 degrees. It's something, better than zilch. Certainly better than sitting back while it fries itself to death little by little every day. This could be the difference between that, or that not happening at all.
Also, I can't use a little personal air conditioner unit (or even manuver some ducting to it either, ceiling vents... won't work well). They cost a fortune to run. I had of course thought about it and got shot down on it. That's why I thought of this instead and it really does seem like it would be quite effective and without much power consumption at all (the pump). There are ways of containing the condensation of the tubing and copper pipes as well (still working that out).
Just saying, I'm sure a lot of people thought (and still do think) that liquid cooling for desktops is on the wacko end of the spectrum. But we know better, don't we? This is really no different. Just external and without direct contact. Certainly won't be having to worry about springing leaks directly in-line with the hardware. Ha.
Anyway. I am refining some tweaks to this concept. I haven't abandoned it. Its just going to take me some time to gather up the required items, have to get the majority of them second-hand. Not going to be for a little bit but I hope to have this completed well before the extreme summer temps arrive. Else I will be going nocturnal to help compensate for it. Still bleeding hot at night out here in summer though.