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h110 exhaust or intake ?

post #1 of 8
Thread Starter 
Hello all

Please can people advice me on where I should set my h110 with push pull configure to exsaust or intake ? I'm trying to get the lowest temps possible for my CPU for my 4.8ghz overclock .. The overclock is currently running at ok temps .. Seeing 69 max temp when gaming but I want to get better .

Current Case fan config :

H110 with x4 viper push pull , mount at top as exsaust
200mm side fan intake
2x 120mm front intake
Rear 120mm exsaust
Their are many extra slots for more fans that are empty so are allowing free follow currently

All advice welcome

Thx
Sleepyluke
post #2 of 8
Hello Sleepyluke.

You almost always want to exhaust depending on where you place the radiator.
If you are placing it at the top of your case (as you are describing) you'd probably want to exhaust.
First, have a look around your case.
I'm willing to bet that there are 2 small or 1 big fan taking in air at the front of your case.
If so, you want to exhaust the radiator fans.

To be quite honest you'd always want to avoid intaking radiator fans because the air they are moving is already quite warm depending on the size of your rad, loop, case, etc.
And since we want hot air out of the case it wouldn't be the smartest thing to blow it in ;-)



TL;DR
Exhaust.
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post #3 of 8
Also if you're unhappy with your temps you COULD try grabbing high pressure fans for the radiator.
High pressure fans (measured by M³) cool better but usually it's not worth the cost since these are minor differences.
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post #4 of 8
Thread Starter 
I'm surpirsed ... I was expecting to be told that an intake h110 was going to give me better CPU temps ?
And that I currently had it set the wrong way around .

Is their anything hardware configure wise you can surguess that will improve the cooling .. Other than a new custom loop lol ?
post #5 of 8
The best temperatures will be achieved with intake as it will grab fresh air from outside the case. The downside of doing this is that unless you use some fan filters on the H110, it will bring lots of dust into the case.

So if you want to have it as intake to get best results, buy a pair of filters, and place your case's rear fan as exhaust. Better have more intakes than exhaust to have some positive pressure on the case.
post #6 of 8
Thread Starter 
Quote:
Originally Posted by kcuestag View Post

The best temperatures will be achieved with intake as it will grab fresh air from outside the case. The downside of doing this is that unless you use some fan filters on the H110, it will bring lots of dust into the case.

So if you want to have it as intake to get best results, buy a pair of filters, and place your case's rear fan as exhaust. Better have more intakes than exhaust to have some positive pressure on the case.

O man now I have 2 people telling me 2 different things lol .. But I have read a lot about the intake option giving better temps for the CPU ... Does any one know roughly how much gain is their by changing from exhaust to intake with a h110 in push pull ?


update...
after what seems to take way longer than i thought i have swapped the h110 fans to intake ...im frustrated to say so far i can not measure any difference good or bad .(so max temps are exactly the same )

this is very annoying ! lol

and now im left not knowing whether to change it back to exhausted or leave as intake ... or do i need to add some more exhaust to my config somewhere ells ?( as now i only have the rear 120mm fan as exhaust )

hmm i have 1x 200mm fan ,2x120mm , and the h100 x4 push pull all as intake and only 1x 120mm as exhaust .. i will test with the 200mm side fan as exhaust as well and see if this make a change
Edited by Sleepyluke - 8/13/13 at 2:11pm
post #7 of 8
Well, tbh it's kinda splitting hairs on this one.

Of course it makes sense that 'fresh air' would be colder and would cool better but there are 2 things that become a problem when you intake air on a rad.
First and for most dust ofc.
Don't even have to explain that dust will become a massive issue if you intake air.
Dust will eventually become a problem which is why watercoolers are advised to clean their loops once every so often. (I clean my entire loop once every six months or so)

The second problem is that the airflow in your case has to stay consistent.
You can't intake air from all directions and expect it to cool.

Imagine you opening the window of your room during a hot summer day.
If your door is closed your room won't cool at all.
But once you open the door you can feel a significant breeze enter the room.

The same thing applies to your computer case.
In your case you have to exhaust air on the radiator.
You could flip all the fans in your case and intake on your radiator but that wouldn't be advicable.

The reason why cases are designed to intake air at the bottom and exhaust at the top is so that the air flows in an upward surge that allows air to touch about every part in your computer.
A downward air flow won't affect your certain PCI cards (say, a second graphics card)


As I said, it's splitting hairs with this one but it just boils down to keeping a steady flow of air in your case.
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Gangrene Machine
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Hard DriveOptical DriveCoolingCooling
OCZ Vertex3 + Corsair Force 3 + 10 TB storage LG BD Rewriter EK Supreme HF - Acetal+Nickel EK FC680 GTX - Acetal+EN 
CoolingOSMonitorKeyboard
Watercool 420mm external + EK 240mm internal Windows 7 Ultimate x64 lg w2363d DAS Ultimate 
PowerCaseMouseMouse Pad
Silverstone ST1200-G NZXT Switch 810 With Pedestal Mod Steelseries Sensei Steelseries QcK XL Na'vi 
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post #8 of 8
Thread Starter 
few ok , my machine is back to normal

if i didnt try it i would of be wondering about it for year to come so im glad i tried it , but i think for my set up the only other thing i can do to increase cooling is to fill the extra to front fan spaces with 2 more 120mm intake's to blow more cold air across the top of the case for the h110 .

thanks for the input

sleepyluke
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