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[Official] Gigabyte GA-990XA/970A-Series Owners' Club & Help Thread - FX-8350 support added - Page 265

post #2641 of 3278
Quote:
Originally Posted by M3TAl View Post

It has an actual VRM sensor? Can we see a screenshot?

Here it is:

vptq.jpg
post #2642 of 3278
Nice! They finally put actual sensors in there. Well in that case you temps are fine. Mosfets should be good to like 100-115C. Somewhere around there.

From searching found a post in the 990FXA club with someone using a rev 4.0 board and also has PMBus VR sesnor. He would get throttling at 112C on VR temp.
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post #2643 of 3278
Quote:
Originally Posted by M3TAl View Post

Nice! They finally put actual sensors in there. Well in that case you temps are fine. Mosfets should be good to like 100-115C. Somewhere around there.

From searching found a post in the 990FXA club with someone using a rev 4.0 board and also has PMBus VR sesnor. He would get throttling at 112C on VR temp.

Without any cooling, it was reaching 110º.

After those 1850rpm Coolink beasts, the thing will not go over 76º IBT Max.

Neither the Cpu will go above 58º with 1.55, Dark Rock Pro 2 does the job.
post #2644 of 3278
If it's possible then tighten the screw/bolt whatever is on the heatsink down more. Make sure it's making good contact. Also I can only assume Gigabyte still uses the same thermal pad from the rev 1.1. That pad is pretty crappy. Fujipoly extreme thermal pad all the way!
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post #2645 of 3278
Quote:
Originally Posted by M3TAl View Post

It has an actual VRM sensor? Can we see a screenshot?

I don't know what the max amperage the msofets can take/deliver, not sure. I've ran 1.7V to the CPU for a Cinebench run though with about 55F ambient and blower fan right on VRM heatsink. Back of the board where mosfets are hit 96C for about 10 seconds at the end of the bench run.
Have you tried resetting the cmos to get defaults back? The jumper on the board...

I have tried reseated the battery, but have not done the jumper's, don't a I need a jumper lead thingy?
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post #2646 of 3278
Quote:
Originally Posted by Ningi07 View Post

Hey guys got a problem with my Motherboard/Cpu. My motherboard is a Gigabyte GA-990xa UD3 and the rest of my specs are in my Sig Rig I went into the bios to raise the Cpu vcore to 1.36v to make it was stable @4.4ghz and when I saved the changes and my pc reboot it did not come back on... it boots for about 4-6 seconds and my pc just cuts out, not even enough time to get a display up on the monitor. I have my old am3 phenom 955 that I could stick in if that helps. Thanks

Fixed it... took out Mobo battery for 10-15 mins, put it back in and all booted fine biggrin.gif
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post #2647 of 3278
Actually you don't need a jumper. All you need is anything metal to connect the two pins together, a screwdriver for example. Or a car key.

Good that you got it fixed thumb.gif

Really odd though. Just raising vcore shouldn't cause a boot loop like that. Are you sure the voltage you used was stable for the clock speed you had?
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post #2648 of 3278
Maybe i can get some help here. I have a thread on my full watercooling build for the UD3 and 8350 and I'm starting to overclock my system. I am running prime95 stress test to see how high and stable i can go with the CPU. I am kinda confused at what Speedfan is showing me when i have Prime95 running. Hardware monitor says something different on temperatures but i want to ask what is the TEMP3 on Speedfan showing to be around 50C on the 15minute stress test i do? Can't be the cpu right? on HWM its showing to be 39C? Weird. Also when stressing with prime i find on CPU-z the voltage goes up to 1.424 and after it dips down to 1.376 is that normal with the motherboard i am using or is there a bios setting i forgot to disable to fix the voltage at 1.4volts?
post #2649 of 3278
I have same board as you, same CPU, same Mosfet + NB block (got them on clearance, thanks PPCS!), and use Speed Fan for controlling rad fans.

TMPIN0 is ambient motherboard sensor. In my strong belief, TPMIN1 & TMPIN2 don't matter. No one truly knows what they are. All I can say is they change directly with CPU core temps. They're not the NB and not Mosfet. Maybe one is the socket temp (TPMIN2 maybe).

The only temp you need to worry about is the core of the CPU. AMD's recommended limit is 62C. SpeedFan only shows TMPIN0,1,2 temps. Not the core temp. I use TPMIN2 (Temp3 in SpeedFan) to control rad fans. This is almost always 10-12C higher than the CPU core.

So in SpeedFan you want the fans to ramp to 100% if core hits say 60C? Set Temp3 to go 100% at 70-72C. You can do this two different ways. First way: set a warning temp at 70C (fans will go to 100%) in the Temperatures tab. Second way: make a custom curve in the Fan Control tab using Temp3.

The only other important temp to worry about is Mosfets. No matter what anyone tells you there is NO sensor for mosfet/VRM temps. Only on Rev 4.0 and the 970A-UD3P boards. The only way to have an idea of what the temp is for these is to put a thermal probe (from a fan controller or something else) on the back of the board where the mosfets are.

My current OC right now is 4.837 GHz at 1.475 V set in BIOS on Medium LLC. This is a 225 FSB OC. Memory at 1800 MHz 8-8-8-24 1T 2475 MHz CPU-NB. A 220-230 FSB really seems to be a sweet spot for my chip. I have no problem giving you all my settings if you want to try them.

Notice all the info I gave is for a Rev 1.1 UD3. Many things are different for Rev 3.0/4.0.

Here is CPU-Z validation : http://valid.canardpc.com/kr6njd

Yes my tubing is turning green frown.gif. Something to do with all the copper in the loop and Durelene absorbing it.

Edit: yes the voltage rising at load is normal. That is LLC (Load Line Calibration). I set 1.475 V in BIOS but at idle it's 1.472. At full 100% load it get's to 1.502-1.52 V. This is perfectly normal. If you want to see a comparison of different LLC's on a Rev 1.1 UD3's look at this post I made few days ago: http://www.overclock.net/t/1023100/official-gigabyte-ga-990fxa-series-owners-thread-club/8430#post_21558519


Edited by M3TAl - 1/13/14 at 8:01pm
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post #2650 of 3278
Under HWINFO64 my VRM's show 59C with PRIME95 Blend on for 10-15 minutes. That seems to be the temp at which it stops climbing. That's with Antec Spot Cool directly above it. But again, no overclocking just yet. Even though 59C seems acceptable, I'm going with my finger test. Underneath the board I place my fingers where the VRMs are located. If my finger can't sit there indefinitely, then it's too hot and needs to be cooled down. I consider VRM cooling to be very important part of overclocking, unless you enjoying watching your system burn.

I've already ordered the FujiPoly 6.0 W/mK as suggested by M3TAl, which is probably their weakest thermal pad, but I'm willing to bet it's much better then what's on my Gigabyte board. Keep in mind the VRM temp effects the CPU temp as well. My old ASRock 770iCafe VRMs would get so hot you couldn't keep your finger on there for more then 2 seconds, both heatsink and underneath the board. But with the same cooling setup, my 8350 in the ASRock was at 60C, while on the Gigabyte is 50C at best. That's a huge drop in temp.

I also have an HTPC with no VRM cooling, and yea another ASRock but AM3+. The VRMs on that are 100C easy. I'm waiting on thermal tape for that board.


Edited by Dukenukemx - 1/14/14 at 12:39am
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Overclock.net › Forums › AMD › AMD Motherboards › [Official] Gigabyte GA-990XA/970A-Series Owners' Club & Help Thread - FX-8350 support added