Open Air vs. Blower Style GPU
- Thread starter kampy4
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hdmark
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- Feb 16, 2015
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google this. there are tons of studies/tests.
the one that comes to mind is open air top, blower bottom. but that could be backwards.
I think the logic was the blower pulls In cold hair and gets rid of it, keeping the bottom of the case cool, then the open air above, pulls heat off the top of the bottom blower card, and cools itself at the same time. then a good case will just take the air out
the one that comes to mind is open air top, blower bottom. but that could be backwards.
I think the logic was the blower pulls In cold hair and gets rid of it, keeping the bottom of the case cool, then the open air above, pulls heat off the top of the bottom blower card, and cools itself at the same time. then a good case will just take the air out
king3pj
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- Feb 19, 2013
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I run SLI with two of the EVGA SC 970s with the ACX 2.0 cooling system. This style of card is typically quieter and comes with a bigger factory overclock than the blower systems. I may have considered the blower style if I knew from the beginning that I would SLI eventually but I never planned on that.
I will say that my temperatures are fine with the setup I have now. I played Star Wars Battlefront last night for about 3 hours with HWInfo running and all settings maxed. I was pushing 120-160 FPS depending on which mode and map I was playing.
HWInfo showed that each 970 was averaging about 90% core usage but my temperatures averaged around 72 C. I do have good airflow in my case with several case fans though.
A blower style setup maybe more ideal for SLI, especially if you have a smaller case with less airflow but it's not necessary in my experience.
I will say that my temperatures are fine with the setup I have now. I played Star Wars Battlefront last night for about 3 hours with HWInfo running and all settings maxed. I was pushing 120-160 FPS depending on which mode and map I was playing.
HWInfo showed that each 970 was averaging about 90% core usage but my temperatures averaged around 72 C. I do have good airflow in my case with several case fans though.
A blower style setup maybe more ideal for SLI, especially if you have a smaller case with less airflow but it's not necessary in my experience.
- May 27, 2010
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Depends a lot on the cards width, the motherboard's PCIe slot arrangement, and overall case cooling. Really have to get the heated air out of the case since the axial cards don't do it.
Standard 2x SLI and Crossfire boards have three slot spacing between the required slots. This leaves a gap between the cards. As long as the shrouds on the cards are tight enough against the card to prevent them from throwing air directly out of the side, then air flow can get to them.
When it isn't perfect you get an air cushion effect that actually insulates the cards, causing recirculation of the heated air and rapid overheating. Most of the axial cards today don't seem to have this problem. They are either very long, or have nice solid shrouds like the ACX 2.0 coolers. Vented shrouds, vents on the side, seem to perform the worst.
When you are talking about packing cards right next to each other, then the blower style cards are best. (Micro ATX SLI, or Tri SLI on an ATX board)
Standard 2x SLI and Crossfire boards have three slot spacing between the required slots. This leaves a gap between the cards. As long as the shrouds on the cards are tight enough against the card to prevent them from throwing air directly out of the side, then air flow can get to them.
When it isn't perfect you get an air cushion effect that actually insulates the cards, causing recirculation of the heated air and rapid overheating. Most of the axial cards today don't seem to have this problem. They are either very long, or have nice solid shrouds like the ACX 2.0 coolers. Vented shrouds, vents on the side, seem to perform the worst.
When you are talking about packing cards right next to each other, then the blower style cards are best. (Micro ATX SLI, or Tri SLI on an ATX board)
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