Topic: 360 Dynamic Fan Control Myth (Read 319 times)

MDA · « **Reply #30 on:** November 21, 2006, 09:55:00 PM »

QUOTE(xboxexpert @ Nov 21 2006, 09:34 PM)

Could just be a busted Dynamic Fan control..

I think that he nay have been being too cautious to allow the CPU to heat up. Understandably so, I wouldn't want to kill my 360 either. Thank fully I have hundreds that I can experiment on.

I saw your video. Nice looking setup. How about doing a phase change system?

bigjimmy · « **Reply #31 on:** November 21, 2006, 10:44:00 PM »

Now thats why I origionally thought it did have thermal speed control! Cause if you took off the duct the fans would slowly get faster and faster....

BCfosheezy · « **Reply #32 on:** November 22, 2006, 07:08:00 AM »

Ok now let me state my hypothesis. When I measure the HEATSINK temp of my gpu, I got a reading of around 150 degrees fahrenheit. I say around because I don't know how accurate my temp probe is. With that being said, you heated the cpu. My tests basically only heated the gpu. Could you isolate the gpu and see what the fans do? I think that might prove why we got different results.

BCfosheezy · « **Reply #33 on:** November 22, 2006, 08:10:00 AM »

QUOTE(MDA @ Nov 22 2006, 08:53 AM)

Just did it. Same result. Used some paper to block the flow from the duct.

Hmm... now I'm really confused.

Edit: Oh yeah.... Myth Confirmed! Nice work MDA.

BCfosheezy · « **Reply #34 on:** November 22, 2006, 01:50:00 PM »

QUOTE(MDA @ Nov 22 2006, 09:45 AM)

Thanks! But I was not the only one. Xboxexpert and G0t M4XX had a hand in things as well.

So what are you confused about?

Well I noticed yours immediately started changing voltage. Mine doesn't. It actually has me kind of pissed off tbh. Since I watched your video this morning, I went home and cracked the ole console open and removed the shroud and listened (didn't wanna get the meter out). Since yours was clearly audible I wanted to hear mine..... again I'm a pussy when it comes to ruining my console, so I didn't let it go after I couldn't touch the cpu heatsink anymore because I assume the gpu heatsink is about 20-30 degrees fahrenheit warmer. It didn't get louder. Maybe my unit is defective. Oh well.... I can always go back to vaccum cleaner-style!!!!! (12v fan mod)

DanDini · « **Reply #35 on:** July 13, 2007, 01:53:00 AM »

QUOTE(MDA @ Nov 23 2006, 02:23 AM)

It is very possiable that yours is broke.

..Just jumping on the end of this old but semi-relevant thread:

I've been trying to repair a 360 given to me. I've resoldered the regulators and reapplied thermal paste to the heatsinks, but most recently had (apparently full) success with (very) localised heating of the GPU with a heat gun. All my testing showed that the problem was specific to the GPU temp, so I didn't heat anything else. Now - it all appears to work well, but the fans are running at full blast after around 15 seconds from switch on. This leads me to believe I've damaged the temperature sensor in some way.

Can anyone comment on this or has anyone had similar experience of this?

Thanks,

Dan

Sephy69 · « **Reply #36 on:** July 14, 2007, 01:56:00 PM »

I did this without temp probes and voltmeters. The fans DO speed up if the temperature rises. I used a towel to block the fans and voila, within 5 or less mins, the fans sounded like a jet!!!

Just to say my 360 does dynamically change the fan voltages :-)

ReaperX_BR · « **Reply #37 on:** July 14, 2007, 05:44:00 PM »

jimbobjim · « **Reply #38 on:** July 14, 2007, 06:22:00 PM »

QUOTE(ReaperX_BR @ Jul 15 2007, 01:20 AM)

Never seen that before, good call

Now all we need to know is... are the fans controlled by the CPU or the GPU temp?

brandogg · « **Reply #39 on:** July 14, 2007, 07:20:00 PM »

CPU. That's (likely) why the GPU has more errors.

xzenor · « **Reply #40 on:** July 15, 2007, 10:40:00 AM »

This myth is not busted. I have my 360 in an entertainment center (EC), inside a cupboard with speaker mesh on the door. Inside I cut a hole on the back of the EC and installed a PC case fan controlled with a switch.

I've accidentally run my 360 without the EC fan on....oops. When I hear the 360 case fans whinning.....obviously running at a much higher RPM....I run over to the EC and open the door. Extreme heat pours out.

I've done it during a demo, Forza2 I think it was.... I know for a fact the fans are dynamically controlled, my 360 sounds much different hot than normal operating temperature. The EC fan pulls allot of CFM through, so dont freak out saying my 360 is going to die. I know what Im doing.

My 2 cents, XzeneR

DanDini · « **Reply #41 on:** July 16, 2007, 01:31:00 AM »

QUOTE(succaworm @ Jul 15 2007, 12:04 PM)

I seen somebody with an iceberq heatsink but are there any other heatsinks that anyone has got 2 fit on the 360? because Ive been thinking about getting a replacment heatsink and just leaving the dvd drive external

I appear to have had success in keeping mine cool enough to run for at least a couple of hours (it managed a couple of minutes before).

I blocked off about 2/3 of the air vent that goes to the CPU with some card. I then added a fan to the CPU heatsink (blowing through it, towards the exhaust) to counterbalance the loss of air flow.

The additional airflow now afforded by the GPU appears to be enough to stop it crashing.

The problems I had with the fans going 100% after 10 seconds or so seemed to disappear when I put it all back together again.

Author Topic: 360 Dynamic Fan Control Myth (Read 319 times)