Top Intake or Exhaust H100i

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DeJay126

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I have a Corsair Hydro H100i that I recently purchased and installed. I have it installed in a Thermaltake Overseer RX-I case that I also recently purchased as an upgrade. I currently have one 200mm intake at the bottom front of the case, one 120mm intake at the bottom of the case, one 120mm exhaust at the top rear of the case, one 200mm exhaust at the top of case, one 120mm exhaust at top of case, and the two 120mm/radiator as an exhaust at the top of my case. I have a 4670k OC'd to 4.6 Ghz and I idle around 30 celcius. Under load I get to about 65-70. I have a Gigabyte 760 OC edition and the fans face down (blowing down towards the intake fans at the bottom). I know that it's basically all warm/hot air flowing through the radiator at the top of the case. The metal above the fans/radiator is cool/warm to the touch from the warmer air. The metal at the bottom front of the case (by the 200mm intake) is COLD obviously meaning cooler air is coming in. My question is, should I reverse everything and bring the cold air in through the top and out through the bottom? I know that hot air rises, and don't want to make the fans work harder than they should but it just seems like it would make more sense to reverse everything. Especially considering the 760 fans blow down to the bottom, making the air have to go to the bottom of the case and then go back up top to the exhaust fans. I would think reversing everything would cause the temps to go down because the 760 air is going right out of the bottom. Sorry for such a long post, I just wanted to get everyone's input and wanted to be as specific as possible. Thanks in advance!
 
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dustinhunt78
You NEVER want to intake air from the top and out through the bottom, just for the reason that you stated......hot air rises. I am going to send you a diagram that shows proper placement of fans in a case. Give me a sec because I have no clue as to how to post a picture here in a thread. I will have to find an online link to the diagram.
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dustinhunt78

dustinhunt78

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You NEVER want to intake air from the top and out through the bottom, just for the reason that you stated......hot air rises. I am going to send you a diagram that shows proper placement of fans in a case. Give me a sec because I have no clue as to how to post a picture here in a thread. I will have to find an online link to the diagram.
 
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DeJay126

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That's exactly how I have it set up.
 
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DeJay126

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I didn't realize that 760's sucked IN and blew out the back... I assumed they just blew out air into the case. And yes, I can put the rad in front of the air stream. Right now I have 2 120mm fans hooked up to the radiator and a 200mm and 120mm above the radiator all being used as exhaust fans. Basically the rad is sandwiched between four fans.
 
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dustinhunt78

dustinhunt78

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You are using high static pressure fans vs. high airflow fans I assume. Having the wrong fans installed on the radiator will cause it to be less efficient.
 
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DeJay126

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There are two fans on top of the case (not directly on the radiator) for exhaust and two fans connected to the radiator (the ones that came with the H100i). The two on top came with the case. Are you saying I shouldn't be using the fans on top and only use the two 120 rad fans?
 
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dustinhunt78

dustinhunt78

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No. It is actually a very good thing to have four fans on a 240mm radiator, having set them up as a push/pull configuration. You just want the fans to be "high static pressure" fans instead of "high airflow". If the fans came with the case, they are undoubtedly "high airflow" and won't give as good of performance on the radiator. The two fans that came on the radiator are undoubtedly the right fans, "high static pressure". Mount all four fans onto the radiator.
 
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dustinhunt78

dustinhunt78

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DeJay126

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Thanks a ton. That's exactly how I have mine set up right now. Yes, these are definitely high airflow fans and not high static pressure.
 
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dustinhunt78

dustinhunt78

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Glad it helped out! Once you get the right fans on the radiator you will see better results. If you need help picking out the right fans let me know. By the way.....you can buy the fans in a 2 pack and save a buck or two. Anything to keep costs down. :D
 
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