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Intake or outtake for top radiator - Page 2

post #11 of 15
Dust is a huge problem in my room, so I have intake at the front and bottom where there are factory installed filters on my case, and exhaust at the back, sides, and the top radiator positions. I think cooling is very much a subjective thing, what works for one case isn't going to be the de facto standard for all cases.

Heat hasn't been an issue even when my SLI GTX 680s are cranking at full blast, although it DOES raise my CPU core temps a little but with excess heat inside the case blowing out through the radiator. I think if you're trying to push 5 GHz, and need maximum cooling from your radiator, then intake at the radiator makes better sense. Of course, doing so is going to raise your VRM temps and GPU temps by blowing that CPU heat into the case and circulating it around the other components. I guess it depends on what your priorities are with regard to overall system temp.

Greg
post #12 of 15
I had my top rad set up both ways. I know there are several persons on this forum, one in particular, that will take exception to this, but, the truth is that there was only about a 2 degree difference between exhaust and intake, the exhaust set up being warmer. The truth is that the components, especially the CPU and GPU, can operate in environments that see temps of 60C or higher with no issue. Compared to this, the air being, say 28 instead of 22 isn't really that critical. It just means the water will not be quite as cool, and, therefore, not as efficient. The trade off is worth it to some, not to others.
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post #13 of 15
I'll give you some of my numbers. I have on top EK 360XTX and on bottom EK 240XTX. Both in push/pull. Top is exhaust and bottom is intake. Front fans are intake and rear fan is exhaust.

I'd post a screenshot but currenty at work right now. tongue.gif So these numbers are what I remember from memory. These are my fans at 11-1200 rpm. If I raise my fans higher I couldn't get at least 5C lower.

Starcraft / World of Warcraft
CPU: 50C
GPU: 35C

Tomb Raider
CPU: 60C
GPU: 40C

I wish I could post temps for FPS games but I don't have any FPS games on my PC because sadly, I've lost interest in them when I switched from console gaming to PC.
Edited by redxmaverick - 3/25/13 at 2:52pm
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post #14 of 15
my top fans are intake,

4.4Ghz under full prime95 its 53oC average at 16oC ambient (20/21oC water temp).

Its not sucking warmed air from inside the PC through the rad, its always sucking in 100% fresh air into the case, I have seen a drop in GPU temp as well as the top card would hit 80oC now hits 76oC with the air being smashed onto it from above.

The fans in the pic are now Noctua NF-F12's not the SP120's

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Red Dwarf
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Pioneer Blu-ray XSPC XP240 Alphacool 5.25" Res D5 Pump 
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EK Comp Fittings PrimoChill PrimoFlex Advanced LRT Red Koolance Drain Plug Bitspower temp sensor 
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IC Diamond Liquid Metal Ultra Corsair SP120 Corsair SP120 
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post #15 of 15
Thread Starter 
Thanks everyone. Ill leave them as intake
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