Enermax EG365P-VE - Shouldn't this PSU help reduce CPU temps.?

[brigden]

I just replaced my old Power Man 300W with an Enermax EG365P-VE. Using the Power Man, my CPU temp. was always around 40-45, usually 43. (The Power Man didn't have a secondary fan on the bottom.) I popped the Enermax in, which has a secondary fan, and expected the CPU temp. to be lower, but it has stayed the same - 43 degrees. The PSU fan is being reported at 1150RPM.

I would have thought the addition of a bottom fan would help cool the CPU?

 

[mechBgon]

Put your hand next to the frontward side of the PSU, the side that faces the front of the case, and you'll see one possible answer... some of the air moved by the bottom fan ends up being recirculated in the case after picking up heat from the PSU's internals, because of the vents there.

 

[brigden]

I opened the case while everything was running. I could feel the heat at the very top of the case, near the front intake of the PSU. My bedroom is small and my PC sits under my desk on the carpeted floor, albeit on a piece of cardboard. My room can get quiet warm if I close the door (as I'm prone to do) and especially if I leave the window closed. I have noticed if I open the window and allow fresh air to circulate that the temperature of the CPU (XP 1800+) will drop as much as seven degrees.

I'm not worried about the temperature of the CPU - an average of 45. I realize that many out there obsess with these temperatures and strive to achieve the lowest possible, but I do want to ensure I have adequate airflow. My case has a single 80mm Panaflo on the rear, and of course the PSU has a fan on the bottom intake, and obviously at the rear. I know AMD don't recommend putting a fan on the front, so I haven't.

The cables are as neat as possible and I'm certain they aren't impeding airflow.

Anyway, I just thought it was curious that the temperature of my CPU would rise with a better PSU.

 

[mechBgon]

By the way, those PowerMan units are not bad at all, they're OEM Sparkle Power as far as I know. So you have a good backup unit if you need it

 

[brigden]

Yeah, I was aware of that, but one of the cables is frayed (my fault) so I was a bit nervous using it.