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First Loop and I have some questions. - Page 12

post #111 of 190
The rads do the cooling of the core components (CPU/GPU/etc), and rads will perform best when intaking ambient air. Rads don't heat the air exiting them very much - a few C - which is not enough to worry about the heat inside the case affecting other components like ram and whatnot that are not watercooled and not so easily affected by a tad higher temps anyway, especially just 2-3 C above ambient. What's more important is that there is active airflow moving throughout the case.

Your loop temps (thus the components being cooled by them) will be lowest with all rads with fans intaking air from outside the case. If some rads are intake and others are exhaust, then you will be recycling some of the exhaust from the intake rad through the exhaust rad, and that's where air 2-3 C higher will actually have a negative impact on loop temps compared to if all the rads were receiving ambient air.

Positive pressure is only a benefit for dust accumulation, not for cooling, and only then if all of the intake fan locations are filtered. As long as all intakes are filtered and you have more CFM's as intake than you do as exhaust, then you will have a lot less dust in your case. Keep in mind that filters and rads greatly decrease airflow compared to a fan not impeded by a rad &/or filter. Assuming your case has an open unfiltered grill area on the back and possibly other parts of the case also, you will want to make sure you have an abundance of positive pressure from filtered intakes so every available open place becomes an exhaust to help keep dust out. Having all of your filtered fans set to intake and just the rear case fan as an exhaust is a good way to accomplish that, and it also will provide the best watercooling performance.

- - - - - - -

All that said, I myself have a bottom 360 monsta as intake and a top 480 XT45 as exhaust. I have it that way on purpose even though I know my loop temps aren't as ideal as they could be if the top rad was an intake instead. However, I also have four 140mm fans in the front and right-side panel of the case as filtered intakes that create a good crossflow of ambient air through the case so a lot of the bottom rad's air gets exhausted out the back instead of up through the top rad, and I carefully have set up my temp-controlled fan speeds with my CW611 fan controller so that all my intake fans are always running quite a bit faster than my exhaust fans to ensure positive pressure.

The main reasons I have my top rad set to exhaust instead of intakes is because (1) I didn't like how fast dust would accumulate on top of the case when it was set to intake. The filtered top cover is black and dust really shows up on it. (2) I prefer the look of the intake side of the fans better up top inside my case, and (3) I have an abundance of raddage anyway so I didn't really see much of a noticeable change in temps when I flipped the top rad the way I have it now.

Sooo, in the end you can arm yourself with all the info you want, but however you want to do it is always going to be up to you, and there's always a lot of other factors to consider besides the ultimate performance. How it looks / how I feel about it / however I want it are factors that rate just as high if not higher than performance in my book. If you don't prefer it that way, then it's not going to be the 'best' way for you.
Edited by Unicr0nhunter - 4/9/14 at 7:36pm
post #112 of 190
the whole "warm air" thing doest really effect temps that much. 3c MAX. the more important thing is dust, and looks. fan backs are ugly, so i alway try to have my top rad blowing out and the front rad blowing in. have the extra fan in the bottom to create positive pressure to stop the dustbunnies from sneaking in the little nooks of the case and your good to go!!!

ps....

dont lose any sleep over mixed metals and corrosion in YOUR loop. the products you chose are a good mix thumb.gif...

i ran some Alphacool Cape Coral passive cooling tubes (aluminium) with a raystorm block and a copper rad for a year and a half with 0 corrosion issues. all i used was some antifreeze i got from a VW mechanic friend of mine.

ppssssppspsps

def go with the loop order YOU had in post #81 that will be a clean look and good order.

ppssppspspppspppsppspsppsppp Q

Dont forget to ditch this thread and start a build log!!! everybody loves a good build log
Edited by badtaylorx - 4/9/14 at 7:47pm
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post #113 of 190
Thread Starter 
Thanks for all the great replies guys. I guess the point I was missing was the filtered intakes, which (with positive pressure inside the case) guarantees that the only unfiltered air moving through the case is exiting and not entering. It actually made a lot of sense when I remembered that filters were a thing.rolleyes.gif
Quote:
Originally Posted by badtaylorx View Post

ppssssppspsps

def go with the loop order YOU had in post #81 that will be a clean look and good order.
I was still debating what I would do here. If I went with the other guy's suggestion of pump -> rad-1 -> cpu -> gpu -> rad-2 -> pump, then I could do it and still have the "clean look" by just turning the rad around 180degrees so the inlet and outlet were at the front of the case instead of the back. What I'm more concerned about, I guess, is whether or not it makes sense to have two rads next to each other in a loop, with nothing dumping heat in the loop between them
Quote:
ppssppspspppspppsppspsppsppp Q

Dont forget to ditch this thread and start a build log!!! everybody loves a good build log
I'll try! I might be so excited when it all gets here that I'll forget to slow down and take pictures though. This stuff has been occupying my thoughts almost non-stop since I started this topic.
post #114 of 190
Thread Starter 
Everything was delivered today, and we're off to a bad start. Case came damaged, the front plate won't stay on. I processed the return, stuck it back in the box and printed the return label. Guess I'm off to the store to see what's in stock. Hopefully I can find something decent.

I also realize now that I don't THINK I ordered enough tubing. I'm looking at this and bending it around... I'm pretty sure there's just no way to stretch this. I'll probably have to stop by the hardware store and pick up some tubing... Since I'm not going to use tubing that's marketed for watercooling though.. I'm not really sure what to look for. Can anyone point me in the right direction, or provide some reading for me?
post #115 of 190
Quote:
Originally Posted by e64462 View Post

Can anyone point me in the right direction
Don't use hardware store tubing, You'll regret it. Just order more of what you need.
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post #116 of 190
Thread Starter 
Had a lucky break, local tech store ended up having both the case I want, and the Primiflex tubing.. So I'm still good to go.
post #117 of 190
Thread Starter 
I'm confused...

The rad came with two types of screws, 30mm, and 35mm ... The only instructions in the packaging for the rad tell me these screws are for mounting fans to the rad.

I can surely mount the fans to the rad, but I'd like to have the fans in a push configuration, blowing through the rad IN to the case (as Pepe suggested earlier). This means the fan has to be sandwiched between the case and the rad (and probably everything has to be screwed in from the outside). I don't see how this is possible though, because the 30mm & 35mm screws that came with the rad slide THROUGH the rubber grommets on the case (maybe they need washers, but those aren't in the packaging).

What's proper procedure here? Was I supposed to buy a bracket or... are things just not standardized enough for rad manufacturers to provide the mounting equipment needed in all circumstances? Am I being too demanding by requiring the fans be in a push configuration AND blowing in to the case?

I feel like no matter what I need to head to the hardware store to get some screws or washers for mounting, because even if I mount the fans on the bottom of the rad in a pull configuration (somehow seems less optimal), I still have no screws for attaching the other side of the radiator to the case.

I guess I'm just asking if I'm missing something obvious here, or if additional mounting accessories are usually required for this sort of thing.
post #118 of 190
I'm not sure how your case is set up on the top but if there's room you can try putting the fans on top of the case and the rad inside the case?


Are you sure you're using the correct holes? I wouldn't think the fan holes would be rubber grommets or be wide enough for the screws to slide all of the way through. Then again I'm not sure what case you're working with.
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post #119 of 190
Thread Starter 
I ended up settling on some washers... I'll see how it works out...

Any way to tell which port is the inlet and which is the outlet though on my reservoir? Online tells me they're labeled, but they're evidently not (on the single pump version, anyway).
post #120 of 190
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