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Mosfets on my GTX 460 getting -extremely- hot... - Page 2

post #11 of 22
Thread Starter 
Here's a picture of my case, please don't laugh, I know it needs to be cleaned, has no cable management, etc. I also dettached the other third-party fan I was using to blow directly at the mosfets. If you're wondering what all that cable crap is down in the right corner, it's basically my modular molex cord attached to a molex+molex+fan plug, then a gauge you can use to turn your fans up higher.

http://i54.tinypic.com/54hil3.jpg
Edited by plunx - 1/26/11 at 11:17am
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post #12 of 22
First off they are made to get hot. Second off the mosfets can handle a slight oc but any voltage addition to its stock is unwise. Get a 120mm fan for the front of the case have the rear fan as an exhaust. Take the additional fan off your graphic card. Put your card back to stock and get a side panel to cover your case?? ( don't know if I read that correctly but seems to me you don't have a side panel...)

Also witch GTX460 do you have?
Edited by Nick911 - 1/26/11 at 11:23am
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post #13 of 22
Thread Starter 
The side panel got crushed while I was moving and I'm lucky it didn't mess up anything else inside of the computer (I figured it crushed a video or sound card). So, at this point, I can buy a new case for pretty cheap.. But should I just worry more about case airflow rather than the mosfet heat? Because that was the whole that that got me worried in the first place, the rest of the temperatures in my system are fine (besides the fact that it doesn't have a side panel).

The model that I have is the nVidia stock model, this one:

http://topnews.com.sg/images/NVIDIA-GTX-460.jpg
Edited by plunx - 1/26/11 at 11:33am
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post #14 of 22
Ya you need a side panel. There is no correct flow in your case. And yes, put that heat sink cover ON!
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post #15 of 22
Thread Starter 
Even if I'm getting higher temperatures with the heat sink cover on, it should be on? That's the point I'm trying to make, there's almost an 8 C. degrees with it on and with it off.
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post #16 of 22
It is there to keep the flow of air to pass over the rest of your parts CORRECTLY. If you had proper flow and a side panel on, it would work better. You can keep it without a shroud and have a fan directly blowing over the FETS if your that concern about it. But look at it this way, the cover is on there for a reason and that reason is to keep some sort of flow over the rest of your card correctly.
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post #17 of 22
Thread Starter 
Yeah I completely understand that, I just decided to check out would would happen if I took it off and let it get a different type of airflow. I'll put the heatsink cover back on and work on getting another case, I think I saw one at Fry's for ~$29 after rebates that didn't look -too- bad. I'll let you know what happens.
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post #18 of 22
Sounds good, I'm here if ya need me. This sort of thing is what I'm good at . I have done a few graphic card mods that required me to monitor the cooling of the card and making sure things work out.
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post #19 of 22
MOSFETs are supposed to be hot. I primed an asus board for a week testing for stability and the MOSFETs were running at 80-90C on the board. There were no problems at all and no stability problems and the board still works fine.

Of course, it depends on the MOSFET... The ones on MSI AMD boards are notorious for catching on fire and exploding
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post #20 of 22
Thread Starter 
I'm gonna check Fry's to see if they have any mosfet heatsinks up there that aren't priced too high, but should any specific type of thermal compound be applied between the mosfet(s) heatsink and the mosfet(s)? If so, what's the best kind to get?
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