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Versão atual de: TommyJames337 ,

Texto:

Okay you guys! After months and months of trying, I have found the true solution to the overheating graphics card. I was right with my initial hypothesis. It was indeed the heat sink.
 
I was mislead for months because the heat sink I purchased initially to test my theory was ''also'' malfunctioning in the exact same way. But after isolating literally EVERY part in the iMac, buying a new logic board, and purchasing 5 new graphics cards (without heat sinks) to no avail, I finally decided it must actually be the heat sink, and it absolutely is.
 
I believe the failure is relatively common or the heat sinks are pretty easy to damage because it is rather surprising that I would purchase one and have it malfunction in the exact same way. So, when you get your heat sink, '''be sure to handle it gently'''! It might just break the same way.
 
It's incredibly uncommon for heat sinks to fail in general, so it really surprises me that this did turn out to be the solution. But I suppose there must be a weakness somewhere in the design of this heat sink. Not sure if it's a very minute leak that eventually releases all the coolant in the copper pipes or if it's simply a disconnect of the different components that make it up.
 
Either way, the solution is simple: if you have the aluminum iMac 24" overheating problem, don't go out of your way to buy an expensive graphics card. It's likely only your heat sink that needs replacing.
 
Now, regarding gbuyer's experience, I can only assume his new graphics card came equipped with a new heat sink. They usually do if you buy them off of eBay. If his DID come with a new heat sink attached, I'm willing to bet that the new heat sink fixed the problem, not the new graphics card. (Please, gbuyer, correct me if I'm wrong).
 
But that's what I've got to say on the subject. I bought a whole other iMac to make sure the heat sink really was the issue, and after swapping GPUs and heat sinks back and forth and fixing both iMacs, it is absolutely certain for me that the heat sink is the cause of this problem.

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Postagem original de: TommyJames337 ,

Texto:

Okay you guys! After months and months of trying, I have found the true solution to the overheating graphics card. I was right with my initial hypothesis. It was indeed the heat sink.

I was mislead for months because the heat sink I purchased initially to test my theory was ''also'' malfunctioning in the exact same way. But after isolating literally EVERY part in the iMac, buying a new logic board, and purchasing 5 new graphics cards (without heat sinks) to no avail, I finally decided it must actually be the heat sink, and it absolutely is.

I believe the failure is relatively common or the heat sinks are pretty easy to damage because it is rather surprising that I would purchase one and have it malfunction in the exact same way. So, when you get your heat sink, '''be sure to handle it gently'''! It might just break the same way.

It's incredibly uncommon for heat sinks to fail in general, so it really surprises me that this did turn out to be the solution. But I suppose there must be a weakness somewhere in the design of this heat sink. Not sure if it's a very minute leak that eventually releases all the coolant in the copper pipes or if it's simply a disconnect of the different components that make it up.

Either way, the solution is simple: if you have the aluminum iMac 24" overheating problem, don't go out of your way to buy an expensive graphics card. It's likely only your heat sink that needs replacing.

Now, regarding gbuyer's experience, I can only assume his new graphics card came equipped with a new heat sink. They usually do if you buy them off of eBay. If his DID come with a new heat sink attached, I'm willing to bet that the new heat sink fixed the problem, not the new graphics card. (Please, gbuyer, correct me if I'm wrong).

Status:

open