added 2 case fans, no noticable difference . .Help

[JCROCCO]

I have added two fans to my P4 1.8g due to what I thought was hot temps.

I am using Motherboard Monitor 5 and it monitors 3 temps sensors on my MB.

I installed the following:

Arctic fan TC-1 80mm in the front blowing in
system exhaust blower with 425 CFM in the rear

My temps seemed to have gotten hotter. MY 3 sensors reached 55, 44, and 81. I assume the 81 is the CPU, and one of the other two is my video card.

Is there anything I can do? Should the front fan be blowing out?
Should I move the front fan to the rear blowing out?
Any suggestions?

 

[Corporate Thug]

nah, you want more intake than exhaust (theoretically you want an equal amount but more intake than exhaust is better than less intake and more exhaust). did the ambient temps change at all during the times you made your comparison?

 

[jose]

You might want a better case . Check this case, it uses 2 - 120cm fans.

Also you might want to us a Zalman cnps7000AlCu heat sink.

I was running at 40C w/ the stock intel fan , the Zalman drop me to 30C w/ a 1.6 oc'd to 2.4

case pics

http://www.newegg.com/app/Showimage.asp?image=11-122-006-08.jpg/11-122-006-04.jpg/11-122-006-03.jpg/11-122-006-09.jpg/11-122-006-05.jpg/11-122-006-07.jpg/11-122-006-02.jpg/11-122-006-01.jpg/11-122-006-10.jpg

Regards,
Jose

 

[1sikbITCH]

If your CPU is running at 81 celcius, case fans won't help. Take your HS/ Fan off and make sure you have thermal paste applied properly, and that the HS/ Fan is properly mounted. That's extremely high.

If everything seems to be in order, than double check the temperature by rebooting. Look at MBM 5, then reboot and either catch the bios reading of the temps as it's booting, or go into the bios itself and look at your temps. Maybe MBM 5 is just screwy.

If indeed your CPU temp is that high, then fixing that will lower the case temps all around.

 

[syberscott]

Originally posted by: shady06
nah, you want more intake than exhaust (theoretically you want an equal amount but more intake than exhaust is better than less intake and more exhaust). did the ambient temps change at all during the times you made your comparison?

I have to disagree here. Positive pressure in the case will hinder air flow through the case. All manufactured cases are setup with more exhaust than intake (or they are equal). This creates good air flow with the only problem being that dust is sucked in through the cracks in the case.

 

[Corporate Thug]

Originally posted by: syberscott

Originally posted by: shady06
nah, you want more intake than exhaust (theoretically you want an equal amount but more intake than exhaust is better than less intake and more exhaust). did the ambient temps change at all during the times you made your comparison?

I have to disagree here. Positive pressure in the case will hinder air flow through the case. All manufactured cases are setup with more exhaust than intake (or they are equal). This creates good air flow with the only problem being that dust is sucked in through the cracks in the case.

live and learn

 

[oogabooga]

I've had the same problem:: I added two case fans, and my temperatures did not drop. I added FIVE case fans.. and my temperatures did not drop (1-120mm 80cfm / 2-80mm Blue 53CFM / 1-80mm 35CFM / 1-80mm TT Smart Fan II 75cfm) and get substantial airflow in and out of the case.

Oddly enough, this only raised my temperatures, I really do not know why. But I realized there were two possibilities
1) The CPU Heatsink was terrible / 2) My mobo moniter's were wrong

It's cheaper to replace my heatsink than my mobo so i bought a new HS/FAN (TT Dragon Orb II) and once again, no change. The TT Dragon Orb isn't a great heatsink (i rather despise it's high pitched whine, even on low) BUT it should have been somewhat of an improvment.

In my case the MOBO was off. I bought an ASUS P4S533 a little while ago and upon using the moniters my computer was running significantly cooler. *shrugs* Hope something here helped

 

[huesmann]

That could have been due to different measurement methods between your two mobos...

 

[Davegod]

Originally posted by: JCROCCO
system exhaust blower with 425 CFM in the rear

425 :Q


anyway, 81C and it would be surprising if your CPU isnt crashing when it gets under load. TBH, "55, 44, and 81" I'd assume 55 to be CPU, 44 to be case and 81 to be nothing of any relevance. Try going into your BIOS and checking the temp readings there. In fact im not sure if 1.8ghz P4's have the throttle thing anyway, i thought most p4's slowed themselves down when they got too hot.

Either way, like someone said 81C CPU temp is more likely to be due to a broken fan on the HSF, using waaaay too much goop or installing the HSF on the wrong way around or something. Stock HSF cooling with a single low rpm case fan (assuming all properly working/installed) wouldnt give temps like that.

 

[JCROCCO]

I hope that 81 is not relevant, but when I boot up the computer, MM5 first reading for that node is like 37, then jumps to 73 or something like that. It hit 80 and my alarms were going off, so it is measuring something, just dont know what.

How can you tell what the nodes that you are measuring refer to? I could unplug the fan from the cpu just to see. Would that work to tell which is which?

 

[Davegod]

er i'd suggest against it, if i tried that i'd be pulling the plug well before cpu temp hit the 81C - and it WILL hit 81c with no fan.

I take it you have booted the PC with the side off to check all fans are spinning? You dont say if your PC has always behaved like this, if its a new build or if it only just started occuring...

If either of the former, I'd reseat your HSF and make sure its not on the wrong way round, also check the fan is working and blowing in the right direction - usually blowing onto the heatsink. While youre there check BIOS/POST to ensure the cpu isnt accidentally being heavily overclocked.

If its only just started happening, main thing to check is if the fan is working properly.

I strongly doubt any of those 3 temps is video card btw, i can only vaguely recall there beign a few cards that do that and iirc the temp was read through dirver sw, never heard of a vid card temp reading in bios (unless its a onboard i suppose).

Read temps in the BIOS, not MBM5!

 

[JCROCCO]

Its a new computer. No Name, bought part, had put together, wasnt involved with assembling the CPU or the heat sink or the bonding. Will check it.

 

[JCROCCO]

The 81 number WAS my cpu, but was an incorrect temperature. I dounloaded and installed cpucooler or something like that, and it showed my first two accurately, but the third showed it MUCH lower. I rebooted and went into my bios, and it had all 3 temps in there also, in the same order. the third was CPU temp, but was like 31, same as cpucooler showed.

I went into MBM5 and changed the 3rd sensor to a different node, something -diode and it registered the right number as the bios and cpucooler.

So, I guess 31 isnt too bad then, but the others still get to 51 etc, which is the power supply I think.

Shouldnt be any problems.