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Xbox 360 and heatsink info?

post #1 of 12
Thread Starter 
Hey guys, so my GF is working on getting an internship with Microsoft. The interview is coming up next week so im l trying to find some information about some the little details.

Currently some the information that we are looking for is heat sink information and other little thermal components thats in the 360/orginal xbox.

Also if if anyone wants to put in some general information on what makes a good and bad heatsink or what advantages some designs have over others it would be greatly appreciated (shes trying to learn a bit about them tongue.gif ).

Thanks! +reps

Edit: also from what i could find looks like theres only 2 cooling revisions in the 360 ? was that it? O_o
Edited by DNytAftr - 6/19/11 at 10:39am
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post #2 of 12
What's there to know about it?
It's just a simple heatsink like you'd find on a PC.
It has copper heat pipes and aluminum top.

DSC03164.JPG
post #3 of 12
Thread Starter 
Quote:
Originally Posted by mbudden;13928261 
What's there to know about it?
It's just a simple heatsink like you'd find on a PC.
It has copper heat pipes and aluminum top.

*snip*
Ah okay, well just wondering since she would be working on designing new hardware for them. So just trying to find out what made the xbox 360 have issues with heat/noise and how could it have been lowered. stuff like that tongue.gif but thanks! biggrin.gif +rep
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post #4 of 12
Quote:
Originally Posted by DNytAftr;13928305 
Ah okay, well just wondering since she would be working on designing new hardware for them. So just trying to find out what made the xbox 360 have issues with heat/noise and how could it have been lowered. stuff like that tongue.gif but thanks! biggrin.gif +rep

The problem with heat, is the fact that there really is no intake of air.
They have 2 fans on the back for exhaust, but what's the point if no air is being pushed over the heat sink?

The noise came from the DVD drive. Mine (one of the earlier models) have a noisy drive.
Though these issues have been addressed in the newer revision of the 360.
post #5 of 12
Gotta have a shroud so that more air gets pulled across the heatsink, and you MUST torture test the heatsink solution in an 100*f room for 6 hours at LEAST with no issues in order for it to be successful.
    
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post #6 of 12
Thread Starter 
Quote:
Originally Posted by mbudden;13928355 
The problem with heat, is the fact that there really is no intake of air.
They have 2 fans on the back for exhaust, but what's the point if no air is being pushed over the heat sink?

The noise came from the DVD drive. Mine (one of the earlier models) have a noisy drive.
Though these issues have been addressed in the newer revision of the 360.
reps
Ah okay, so the air was being "pulled" over the heatsink but prob not the most effective way to do so.

hmm so cd drive makes alot of the noise, interesting

We where looking at the slim heatsink (coolermaster) which seems to be quieter and im guessing more effective even with out heat pipes (which to my understanding is an effective way to remove heat from the cpu instead of leaving a heatsink on the cpu). Could that be from the fact the airs blowing on it along with the smaller nm cpu?

Thanks
Quote:
Originally Posted by MR KROGOTH;13928379 
Gotta have a shroud so that more air gets pulled across the heatsink, and you MUST torture test the heatsink solution in an 100*f room for 6 hours at LEAST with no issues in order for it to be successful.
haha tongue.gif reminds me some the environmental tests you might see in a car .. although an av Cabinet could be like a desert >_>
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post #7 of 12
If you need any pictures of any of the heatsinks or internal components at all, let me know. I think I have one of every revision, minus the Slim, all taken apart.

The problem with the 360 "red-ringing" and overheating was also due to warpage and an unbalanced heatsink. The clamps on the back (the infamous X-clamps) would bend over time, causing one side of the heatsink to have more pressure on the CPU or GPU than the other. People tried to fix this themselves by replacing the X-clamp with individual washers/screws so it wasn't linked.

Another problem was the size of the heatsink. The GPU heatsink is a very short, wide heatsink directly below the DVD drive. The airflow is absolutely terrible because of this and the only way they could remedy it was by adding a shroud to suck the air from the back, which was not very efficient. What they've done with the Slim was, instead of having a fan suck air out from the back, they have a big fan sucking all of the hot air out from the top, making it quieter and cooler.

Newer revisions of the Xbox 360, all of the way up to and including the Slim, have reduced the die size of the CPU and/or GPU each time, with the Slim now having both on one die. This made it much easier to cool as you only need one heatsink that can have a larger surface area and disperse more air, but also needs better cooling.

Though it's not exactly a help-out-Microsoft-related site, you should look around on the site Se7ensins.com. They actually have a lot of resident experts on the console, despite the number of trolls and fools, that may be able to help you out more.
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post #8 of 12
Thread Starter 
Quote:
Originally Posted by Detroitsoldier;13928464 
If you need any pictures of any of the heatsinks or internal components at all, let me know. I think I have one of every revision, minus the Slim, all taken apart.

The problem with the 360 "red-ringing" and overheating was also due to warpage and an unbalanced heatsink. The clamps on the back (the infamous X-clamps) would bend over time, causing one side of the heatsink to have more pressure on the CPU or GPU than the other. People tried to fix this themselves by replacing the X-clamp with individual washers/screws so it wasn't linked.

Another problem was the size of the heatsink. The GPU heatsink is a very short, wide heatsink directly below the DVD drive. The airflow is absolutely terrible because of this and the only way they could remedy it was by adding a shroud to suck the air from the back, which was not very efficient. What they've done with the Slim was, instead of having a fan suck air out from the back, they have a big fan sucking all of the hot air out from the top, making it quieter and cooler.

Newer revisions of the Xbox 360, all of the way up to and including the Slim, have reduced the die size of the CPU and/or GPU each time, with the Slim now having both on one die. This made it much easier to cool as you only need one heatsink that can have a larger surface area and disperse more air, but also needs better cooling.

Though it's not exactly a help-out-Microsoft-related site, you should look around on the site Se7ensins.com. They actually have a lot of resident experts on the console, despite the number of trolls and fools, that may be able to help you out more.

hmm some good info here biggrin.gif if you could get me some the pictures that would be awesome. Been looking around google and seeing differences but cant really tell which models what and what revision was first or last @_@

Thanks +rep

Edit: but yeah we prob go browse around the site and take a look biggrin.gif
Edited by DNytAftr - 6/19/11 at 11:09am
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post #9 of 12
The different revisions of the Xbox 360 motherboards were (taken from Wikipedia):

xbox360chart.png

I'll try to get some pictures up to you tonight.
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post #10 of 12
This picture will best describe the lack of intake air.

CIMG1303%20copy.jpg

The cool air wasn't really intaked into the 360. It was more or less sucked in by the fan pushing the air out.
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