[QUOTE="beachbob1"]When the heat sink stop working properly it OVERHEATS and warps the PCB? So you got the 3 RROD becuase it OVERHEATED?
Unless your logic is you got the RROD becuase your x-clamp is defective...but it didn't stop working till it OVERHEATED!! Therefore I WIN! Plus if the only thing wrong was the x-clamp people wouldn't be going thru 8 refurbished 360's seems like a simple fix. I think it was running to hot without the x-clamp being defective that just quickend its death..
thinicer
So does the heatsink stop working because it overheated, or does the Xbox 360 overheat after the heatsink stops working?
What is causing the RROD? Is it because the Xbox 360 gets hot, or is it because the heatsink is pure junk and doesn't do what it's supposed to? Think cause and effect.
The RROD has been all over the map. There have been many personal accounts of people who have put their Xbox 360s in really cool environments, outside of cabinets, away from carpets, and totally out in the open and they STILL got the RROD, while others who have violated all those precautions have not had their 360s fail on them. And then there were people who got their newly repaired 360s in the mail and then had them fail on them in very short order. The one common denominator is the heatsink. Usually it takes some time for things to warp, it's stress that happens over time, but people have had their Xbox 360s have fail on them after a week of use.
By the way, my Xbox 360 went red ring on me. I keep my house at 70 degrees fahrenheit, my 360 is well ventilated, and it never, ever got hot at the touch. It was fine for the longest time and I kept very good care of it. I would never in a million years say it failed because it overheated. It failed because of the junky heatsink inside.
I have seen and read enough accounts of people who have worked up the courage to open up their 360s to replace the x-clamp heatsink with another one that utilizes four screws, and their RROD problems were solved for the long-term.
The CPUs/GPUs are overheating because the Heatsinks + Fans (HSF) are not staying attached properly to the CPU and GPU die. The reason they are not staying attached properly is because the HSF themselves are CHEAP and they are not absorbing enough of the heat from the CPU and the GPU.
So the motherboard areas near the CPU and GPU are warping from the heat - this is very dangerous because warping motherboards can cause all sorts of prblems - like shifting the HSF themselves and preventing from touching the entire face of the CPU/GPU die - thus causing them to overheat and shutdown.
Not too mention if you have soldered resistors/leads/capacitors/chips or whatever near those "hotspots" on the warped motherboard, there's a good chance the solder joints will heat up and cool down over and over again during gameplay and they'll eventually crack and break - then your motherboard will be useless even if the CPU and GPU are working properly because data and electricity will be cut off to parts of your system.
So basically it's a major design error - caused mainly by CHEAP Heatsink + fans.
Switching from 90nm transistor CPU/GPus to 65nm will help, but not solve the problem alone - Microsoft MUST invest in higher-quality Heatsinks + Fans.
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