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Antec EarthWatts 650


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#1 Original_Shifty

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Posted 13 January 2009 - 11:36 AM

I'm thinkiing of upgrading the PSU (Antec 350SL) that came with my Antec case, to the EA 650.

I do have an abosuletely eye-roller question to ask. I'm not understanding the engineering design of the 650 as opposed to every other PSU I've seen in a computer. That being, the fan being placed on the PSU where the AC power outlet and power switch is located facing outward from the case. The 650 is not like this, it's on a different side. How does this design work? When I install the unit does the fan face up away from the system board, or down towards it?

http://www.antec.com/usa/ProductFamily.php?lan=us&PC=11

Edited by Original_Shifty, 13 January 2009 - 11:37 AM.


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#2 Sterling14

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Posted 13 January 2009 - 08:54 PM

The fan would blow throughout your system. If not, it would just be blowing right into the side of your case and not have good airflow. I think this design may be favorable for cases where the power supply sits in the bottom of the case. I don't see the harm in using it though.
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#3 dpunisher

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Posted 14 January 2009 - 09:59 AM

On an ATX case, the fan will be on the bottom of the PSU facing the CPU cooler. Most PSUs use this arrangement because it cools the PSU better, moves more air and is quieter.

Edited by dpunisher, 14 January 2009 - 10:00 AM.

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#4 Original_Shifty

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Posted 14 January 2009 - 02:13 PM

Oh, okay. Now I got it. In my case the PSU is at the top of it so the fan will face down to blow air on the system board and CPU.

See, I always thought the fan on old PSU's pointed out of the case because it was drawing air out of the case but PSU fans are drawing air into the case for better airflow within the case.

Thanks guys, that's really cleared it up for me.

#5 hamluis

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Posted 14 January 2009 - 02:18 PM

Actually...my PSU on this system (and, I believe, every PSU I have ever had) draws the warmer air (which rises out).

The fan on the PSU is an exhaust fan...if you doubt these things, put your finger to either the fan or outside-case side.

I don't know why they always show these PSUs upside down these days.

Louis




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