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[Official] Gigabyte GA-990XA/970A-Series Owners' Club & Help Thread - FX-8350 support added - Page 61

post #601 of 3278
Quote:
Originally Posted by xd_1771 View Post
^ No, that should be fairly accurate. Because the NB/chipset handles only HyperTransport clock and PCI-E lanes nowadays, there's no reason for it to get very hot.
I got restless and did a touch test.

NB burned my finger. VRM was barely warm. And they weren't back before I replaced them (And the thermal tape was DEFINITELY making contact.

I have to say I think you're wrong about which is the VRM temps.

We REALLY need someone from Gigabyte to settle this. Or maybe someone with a digital thermometer?
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post #602 of 3278
Thread Starter 
^ This is interesting; it should be noted that the temp sensors are not on the heatsinks themselves. Some other users observed differences in temperature when touching different points of the heatsinks. I will e-mail GIGABYTE about this and find out once and for all, but don't expect a response for a number of days (they usually take awhile).
post #603 of 3278
Borrowed a digital thermometer from a friend.

Sticking the sensor in between the ridges of the heatsink.

Mosfets were at 105 F

NB was 120 f

I ASSUME the sensors, being closer to the actual heat source, would be HOTTER then the heatsink

Tmp0 is 96 F
Tmp1 is 114 F
Tmp3 is 140 F

So it SEEMS like Tmp2 would be NB, and 1 would be VRM, but who knows unless they tell us.

Cores are at around 120 F each too BTW.
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post #604 of 3278
Quote:
Originally Posted by xd_1771 View Post
^ This is interesting; it should be noted that the temp sensors are not on the heatsinks themselves. Some other users observed differences in temperature when touching different points of the heatsinks. I will e-mail GIGABYTE about this and find out once and for all, but don't expect a response for a number of days (they usually take awhile).
Eh. At this point I doubt my computer is going to explode in the meantime. If I'm right and it is the NB heating up it's actually a bit of a relief because I'm PRETTY sure it would at least only take out the Motherboard and not the whole system the way I was worried a VRM might do.

Also, I had an old system that had a NB temperature much higher then this with a broken fan on top of it and it never died. They seem built to last.
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post #605 of 3278
Quote:
Originally Posted by Nephrahim View Post
Borrowed a digital thermometer from a friend.

Sticking the sensor in between the ridges of the heatsink.

Mosfets were at 105 F

NB was 120 f

I ASSUME the sensors, being closer to the actual heat source, would be HOTTER then the heatsink

Tmp0 is 96 F
Tmp1 is 114 F
Tmp3 is 140 F

So it SEEMS like Tmp2 would be NB, and 1 would be VRM, but who knows unless they tell us.

Cores are at around 120 F each too BTW.
TMPIN0 = North bridge/Motherboard
TMPIN1 = CPU socket
TMPIN2 = VRM/mosfet

VRM temp goes up with load, as there is more power drain. Its normal for VRM to be up to 70Deg C.

So this is after you remounted your NB heatsink though?? How is your ambients during this test? Case airflow?
Edited by kevinf - 10/16/11 at 6:26pm
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post #606 of 3278
Case airflow is good, but this was with the cover off, but after I closed it up the temperatures only went up a single degree if that.

I just don't think the VRMs are what's so hot on the system. The heatsink NEVER heats up. And the NB Heatsink gets far hotter then tmpin0 is.
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post #607 of 3278
because the VRM heatsink doesn't make great contact/pressure, the metal doesn't get nearly as hot as the chips underneath. Try touching your VRM chokes (the square things), I found those hotter then the heatsink as well.

normally people find the opposite, with the cover open, temperatures are worse, because the "flow" is all wrong.

I just got a digital meat thermometer as well, going to re-wire the probe to make it not electrically conductive everywhere (currently it is a 15cm shaft!). Will let you know if the readings are similar to yours or not. I haven't touched the paste / pads on either VRM or NB.
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post #608 of 3278
Thread Starter 
^ What kevinf said is actually possible. Chokes can get particularly hot; not dangerously, but they can be hot.

Good luck!
post #609 of 3278
Might be. I can only speculate, but it seems like we don't have a lot of firm evidence one way or the other.

The VRM heatsink was pretty firm, so I'm pretty sure the Thermal paste took hold. And again, this is about the same temperature (Of the Heatsink) as it was when I touched it before I re-mounted it.

I'll be very curious to see how this works.
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post #610 of 3278
Quote:
Originally Posted by Kevindeuxieme View Post
Hello all

My first post ever around here ever was going to be about how I kept having trouble with my temp readings on this MB. I was going to tell you that in HWinfo, latest version, what is labelled as "Temperature 3" and also usually "CPU 0" (not "CPU" mind you, the one that's on my Phenom not the one from the ITE chip) kept misbehaving:

-Temperature 3 either didn't even show, or when it did the reading never changed whatever I did (browsing, gaming, movie...) and could be all over the place, sometimes 12C (!), sometimes 59(!!), sometimes 129(!!!!!!!). The number would be set from the moment I started HWinfo to the next reboot, restarting the software wouldn't do anything.

-CPU 0, well, would be absent half the time, even though the cpu (10h+ thingie) would appear.

I would try to change settings in the BIOS, to no avail. I got the same results with every version of the BIOS.

Then, right before posting this, I decided to update the BIOS again, because I realized the unadvised version was 9A, and what is now on the Gigabyte site is the 9B. Lo and behold, both my readings are fine now.

Yay! \\o/

So this went from "W.T.F help" to "I have this mobo and everything is fine".

Except (plot twist ) I have a question regarding the MOSFET heatsink. I looked at the post about removing/reapplying thermal paste on the heatsinks and came upon a little kink in the process (beyond ruining my fingers to get the damn things off). If I remove the MOSFET heatsink, remove the thermal pad , apply some not so recent thermal paste, put it back, well the heatsink is just not stable. I can move it slightly back and forth, and when I removed it again (hello fingertips) it was obvious on both the MOSFETs themselves and the heatsink that they were barely touching (paste hadn't spread).

Therefore, are the MOSFETs not aligned on a plane, making any heatsink modification impossible without thermal pads ( ), or is the heatsink itself just poorly flattened/polished? I'm asking because the temp I get from my now-normal reading is around 50C idle, and I don't like it, and I'm not sure what this temp actually measures, and when I do change the stock cooler on my cpu I figure I might as well invest in proper radiators for all involved. Any advices on that by the way?

Aaaand that's it for now.
Kevindeuxieme,

Put a washer between the top of the heatsink and the push pin socket to create a shim, it should press it down hard enough to mate. Another reason I recommend Arctic Cooling Ceramique, is because it's thick like the Silicone stuff you use to seal around a sink or a bathtub, and is 100% non conductive. The natural heat from the VRMs should do the rest!. Mine runs at 38-39C. Even at 3.2GHz it only got to 43C running IBT.

Here's a liquid cooling system for the CPU that has a pretty good following.
http://www.newegg.com/Product/Produc...82E16835181010

Best Regards,
Russ
Edited by theonejrs - 10/17/11 at 2:14am
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