Which water cooling config?

[Xman0926]

Would it be better to use a 120mm rad on the back in push/pull, or a 240mm rand on top in pull? They would be used as the only exhaust, with a 120mm in the front and bottom.

 

Sorry if I worded that weird.

[earlcray]

What are they cooling, the CPU? If so, I'd say have the 240mm rad. on the top as exhaust. And instead of 2 intake fans, place the 120mm fan from the bottom as an exhaust fan at the back.

 

You generally want more exhaust than intake(negative pressure) 

 

See: http://www.tomshardware.com/faq/id-1858957/airflow-101-setting-fans-keeping-computer-cool.html

[W-L]

Would it be better to use a 120mm rad on the back in push/pull, or a 240mm rand on top in pull? They would be used as the only exhaust, with a 120mm in the front and bottom.

 

Sorry if I worded that weird.

 

If the rads are of the same thickness the larger 240mm rad will give greater performance gain compared the 120mm, since the surface area is greater.

[Shaqo_Wyn]

Would it be better to use a 120mm rad on the back in push/pull, or a 240mm rand on top in pull? They would be used as the only exhaust, with a 120mm in the front and bottom.

 

Sorry if I worded that weird.

 

With a top 240 or rear 120 in exhaust you'd be cooling those rads with hot air coming from the front and bottom 120's. The temps won't be significantly higher but you can do better.

 

I recommend you do intake 240 in the top along with intake bottom and front 120's. A single good exhaust fan in the rear will push all of this hot air out of your case. 

 

What components are you cooling? What case are you using?

[Xman0926]

With a top 240 or rear 120 in exhaust you'd be cooling those rads with hot air coming from the front and bottom 120's. The temps won't be significantly higher but you can do better.

 

I recommend you do intake 240 in the top along with intake bottom and front 120's. A single good exhaust fan in the rear will push all of this hot air out of your case. 

 

What components are you cooling? What case are you using?

I am cooling the CPU, FX-8370e to be exact, and the case is the Thermaltake A41

[Xman0926]

What are they cooling, the CPU? If so, I'd say have the 240mm rad. on the top as exhaust. And instead of 2 intake fans, place the 120mm fan from the bottom as an exhaust fan at the back.

 

You generally want more exhaust than intake(negative pressure) 

 

See: http://www.tomshardware.com/faq/id-1858957/airflow-101-setting-fans-keeping-computer-cool.html

Why would I want negative pressure?

[Shaqo_Wyn]

I am cooling the CPU, FX-8370e to be exact, and the case is the Thermaltake A41

 

Ah okay. Well according to the product site, the case can only handle a 240 in the top and a 120 in to rear. That is enough for a CPU. 

 

You could do exhaust on both the 120 and 240 rear and front and have some good front and bottom intake fans. 

 

Edit: for less dust you would want positive air pressure, but it doesn't matter too much to have negative air pressure as long as you have fan filters.

[earlcray]

@Xman0926 , I suggest you read that article from tomshardware.

[Xman0926]

@Xman0926 , I suggest you read that article from tomshardware.

No, because negative pressure = more dust. Who would ever want that?

 

Edit: I can see why you would want more exhaust, but I would favor cleanliness over performance that will degrade over time due to dust build up. 

[W-L]

@Xman0926 , I suggest you read that article from tomshardware.

 

No, because negative pressure = more dust. Who would ever want that?

 

For pressure in a case positive pressure is more popular option, I read the article about the stagnant fair but as long as you have your fans positioned correctly and not had dead zones with no airflow at all, there won't be any problems with hotspots since it'll be forcing air out of gaps or mesh of the case. Also the dust is a huge factor which gets mostly limited by positive pressure and some nice fan filters.