[kansir]

The old iMacs have cooling fans inside, but the new iMacs don't.
Does iMac DV need a cooling fan?
My iMac DV is hot !!! Can I install a cooling fan for it?

[MacNZ]

As you said the original iMac had a fan but the current iMac doesn't. It's safe to assume that unless you are overlocking your iMac or something you don't need one otherwise Apple would include them obviously. Is your iMac DV hot compared with other iMac DV's in standard operations or have you overclocked or hacked it somehow?? If it is normally hot you'd be better to get some Apple specialist to deal with it as I'm sure they wouldn't be too keen you adding a fan or anything. Otherwise, there are ways of adding in fans in a DV though I'm sorry I only know about 1st generation iMac solutions. Probably a fan from an Athlon based system or something would be a likely bet. Sorry I can't be more specific

[kansir]

This is my first iMac, I have not compared with others. So I don't know is it more hot than others.
I have use "Gauge Pro" for testing, it said my iMac is 50'C. Is it too hot?

Actually 50 degrees C is too hot

check out
http://www.apple.com/imac/techspecs.html

it says that norm. operating temp should be
10 to 35 degrees C

[imacman11]

I, too, was worried about temp problems on my iMac. This was mostly due to the fact that when I would put my hand on the top vents, I would pull my hands off with 3rd degree burns. So I started to wrack my brain to look for small fans that would fit inside. Since I have been in and out of my Rev. A iMac 20+ times, (To install the iMaxpwr upgrade, Gamewizard, video ram, and 256mb Ram) I kinda knew how big the fan had to be. Everywhere I looked, nothing would really fit, so I bought one that is almost exactly like the one on the inside of the iMac. I then took this fan and cut the wires and rigged it to a 12v DC adaptor, since I could not plug the new fan into anything on the iMac. I affixed the new fan to the vents on the top via paperclips (slide them straightened through screw holes in 4 corners of fan into the vents). Most of the time I keep the fan on, I took the side panel off (with blue hologram), and the bottom sheild, all this for maximum air flow. Using Guage pro, or whatever it is called, it tells me that my processor temp is 31 degrees C/87 degrees F. So, that helps a lot in the long term for the computer and it helps keep the processor *really* cool. Great for games...
Hope this helps a little and good luck.

------------------
Thou shalt go forth and spread the iWord.
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www.themacgod.com

[Kozmik]

50 C not being "safe"? You have got to be kidding... my iMac DV SE has run at that since the day I got it, nearly 7 months ago. Since nothing inside is melted and I never smell burning plastic, I assume it is perfectly safe to run at that temperature. By the way, Apple means that 10 to 35 degrees C is the temperature a room must be to operate it. Anything lower or higher is not good.

[This message has been edited by Kozmik (edited 07-12-2000).]

hahaha you have got to be kidding me - Mine is at 63C - 145F

I think I just beat c4$|-| in the my iMac runs hotter than yours contest.

[kansir]

Do you think Gauge Pro can be trust?
I don't know how this software "CHECK" my CPU's temperature?
How about I place a fan near my iMac, add more ventilation, will it help?

[exa]

There are temperature instructions on the processor or whatever so that guage pro can check them, though it does have a fairly large uncertainty.... now, I thought G3s were safe up to 60C, so 50C isn't too bad (my g3 runs at 31C ).

[Zwilnik]

The thing to remember with the convection cooled iMacs is that they need to draw their cool air in at the bottom, and dump warm air out at the top. If your iMac is sat on top of a heater, or all the possible air intakes at the bottom are covered with books, coke cans or cats it's going to heat up.
Make sure your iMac sits on a nice clear desk and it should be fine.

surely there will be fans in the rumored new imacs, the one's with the red-hot g4 processors.

See - heres what i think the problem is - my iMac is on a desk w/ nothing to block the venaliation at all - BUT I do have a ceiling fan and the air coming out of the top of the iMac comes out slowly - IE convection cooling - BUT its harder for the air to rise because there is a ceiling fan pushing the air to go back down but the thing is the ceiling fan isnt pushing the air out of the bottom - its just coming out the top slower than before thus keeping more heat INSIDE the iMac - I pretty much confirmed this when I tested it myself - With the fan on - hot - fan off - not as hot. I dont know for sure but I think it dropped considerably - like 5-10 degrees....

[DBursey]

In summer months your ceiling fan's direction of rotation should be set so as to draw cooler air upwards, not to force warmer air down (winter setting).

Gauge Pro will also indicate your processor type and version number. Aluminum runs hotter than copper. Yours is probably aluminum. In any case, I don't believe 50C to be excessively hot.

Keep the base of your imac free from obstruction, so that cooling air is drawn in efficiently. If you are still concerned, you may want to consider the product described here.

This topic has been discussed extensively in the following forum: http://forums.macnn.com/cgi-bin/Forum5/HTML/002463.html

[Ca$h68]

BTW: Scottparr, my iMac's OLD temperature hit an all time high of 154 degrees. BLECH!

Now its copper baby! Hrm, just played Q3 for a half an hour and its only 109!

Ca$h

[kansir]

My CPU version is 3.2 in Copper.
I placed it on a clear desktop without anything covered the bottom. I think because I have a fan at the top and the fan push the warm air back into the computer. So the ventalation is not good.

[Ca$h68]

Am I the only one getting annoyed with the improper english in the title of this thread?

Just checking.

Ca$h

[seanyepez]

It's great that people are venturing onto the message boards, and I commend you, Kansir, for having the confidence and courage to speak English as a second language.

Don't mind Ca$h. Obviously, he has no consideration for others, and is insecure. If someone is better than him, he puts them down. Also, he is obviously extremely racist. He has no tolerance for those different from his race. For taking his incoherent and stupid verbal abuse, I congratulate you.

[kansir]

Thanks for Seanyepez!
English is not my mother tongue, my mother tongue is Cantonese.
I am learning English. Reading MacNN and MacNN forums is one kind of method for learning English. I always put a dictionary besides my iMac for checking unknow words.
I will write more careful and double checking my replies before sending.
I hope that I won't make a lot of inconvenience for all of you.

[joe]

Originally posted by seanyepez:
Don't mind Ca$h. Obviously, he has no consideration for others, and is insecure. If someone is better than him, he puts them down. Also, he is obviously extremely racist.

Racist??? Ca$h may be outspoken but I've never seen a racist comment by Ca$h or anyone else here......joe

[Xyphoid Process]

I believe the 10-35oC you're talking about is for operational room temperature. The actual processor will be hotter than that.

The iMacs cool themselves by induction - free vents at the bottom and an unobstructed top are vital. If the top vents are hot that's good - it means the air is moving properly and heat is getting carried away from the circuitry (in fact the hotter the top vents the better - all else being equal). As for the gentleman who put his fan on the top vents, it would make more sense to put it at the bottom to aid the natural convection.

The iMac should only need a fan if you are overclocking it or using it in a very hot environment - but that holds true for all computers.

[Ca$h68]

Dear Sean Yepez:

F*CK YOU. I'm not racist. My best friend happens to be from Nepal, so kiss my ass. Oh wait, maybe instead you'll just make something else up about me.

Ca$h

PS: Everyone say bye bye to Sean's credibility. Oh wait. He didnt have any.

[Ca$h68]

PPS: Sorry, I didnt know you were foreign. Your English was on par the rest of the time, so I just thought you were a stupid american. hehe.

Ca$h