HELP: Airflow in 650d with H100i

LodgeJ · 8 Dec 2013 at 00:02

Hello guys,

Sorry to ask such a simple question. I am looking to build my first workstation over Christmas and am slightly confused which is the best airflow setup within a 650d case. I am getting the H100i as I'm looking to overclock a 4770k, my current thoughts are:

Front Fan: 200mm Spectre Pro = INTAKE
Rear Fan: 120mm AF120 Performance Edition = EXHAUST
Top Fans: H100i with SP120 Quiet Editions = INTAKE

Would this be the best option?
Also wondering what the advantages are of having the H100i Pushing or Pulling air into the case?
Also read that it is a good option to have the H100i as an exhaust? REALLY CONFUSED :confused:

Sorry to be a pain, but cheers in advance! Any pictures of previous builds would also be of much help!!

Bart_Hunt · 8 Dec 2013 at 00:31

It should be fine.
Fans on the h100 should push the colder air from above.
If you do it other way, it will push warm air from inside the case and it will still cool the radiator but not as effective. I never had 200mm fan in front so can't say. I have 3 strong 120s as intake in front and another 2 as exhaust on top, but only because my cpu is on air ( and warm air goes up naturally ).

justalex81 · 8 Dec 2013 at 00:32

this is how i have mine set up with a h100 and it works well

LodgeJ · 8 Dec 2013 at 09:49

Bart_Hunt said:
It should be fine.
Fans on the h100 should push the colder air from above.
If you do it other way, it will push warm air from inside the case and it will still cool the radiator but not as effective. I never had 200mm fan in front so can't say. I have 3 strong 120s as intake in front and another 2 as exhaust on top, but only because my cpu is on air ( and warm air goes up naturally ).

Thanks for the reply! I think I'll have them in a push configuration to intake cold air into the case, then I have 2 intakes and 1 exhaust out the back, that should be efficient rite?

Another thing, does anyone know when overclockers are getting them back in stock? They seem out of stock everywhere.....

FuF · 8 Dec 2013 at 10:45

I have my H100 pushing air from inside the case and to be honest I don't think there's much difference. In theory, yes - you should always have cold air from outside going through the radiator, but in practice the difference is really miniscule. You may be looking at a few degrees at most, unless you've got poor case ventilation and your GPUs give loads of heat out (and with your setup and 650D I would not expect that to be the case). Have in mind that heat rises anyway, so somehow it feels counterproductive to have to push it down and make the rear fan exhaust it. But at the end of the day it's just as simple as switching the fans around, so you can try both ways and see what suites you best!