Gigabyte UD3 990FX Motherboard - Overclocking Problems.

sillyboink

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Mar 29, 2014
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I recently upgraded to the motherboard in the title to use my new GTX 780 Ti.

But, my processor (though people claim it'll bottleneck...it doesn't, FYI) is an AMD FX 8350. I have the stock setting on, so it's at 4.0GHz at the moment.

But I want to overclock. I had no problems doing this on my old ASRock, but on this board, when I boot up the computer and hit DEL to go into the BIOS, change settings and multipliers...I press F10, and then the computer shuts off, it'll turn back on for a split second, and then turn back off again, and then boot up fully. I go into CPU-Z and Speedfan, and it says it's still at 4.0GHz.

Can someone help me? I've never used anything from Gigabyte before aside from this motherboard, and this is the first of any 990FX boards I've ever actually went into depth with using.

Full build:
AMD-FX 8350 (Trying to get this to 4.5GHz @ least.)
EVGA Dual Classified GTX 780 Ti
Motherboard name is in the title.
1TB HDD (2 drives) + 1 SSD (128GB)
H90 Water Cooler.
750W Rosewill Capstone PSU (Gold, 80+)
8GB G.Skill Ripjaws X RAM. (Going to add another 8GB later. Don't know if this will effect overclocking or not, since the processor essentially controls the speed of the memory.)
 
Solution


glad you worked it out!
you are properly set up! overclocking is more than hitting a few buttons actually. use these for monitoring temp.hw monitor or core temp . temps under load or stress test should always remain below 60c, so throttling never occurs. ensure h90 is properly sitted onto cpu. this guide applies to all uefi mobos. http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard
 

sillyboink

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Mar 29, 2014
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I already know that. I have the H90 seated properly, it's sitting idle @ 28C @ 4.3GHz. I figured out the problem, and I have it solved. Thanks! (Also, ran a 6-hour p95 stress test @ 4.75GHz. Did just fine.)
 


glad you worked it out!
 
Solution

rulejunior

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Jul 30, 2013
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Ok, so my 990fxa-ud3 isn't the only one that does that. Have no clue what it is but my system works just fine. Mine, I hit power, powers on for a split second, off then on fully. Dunno if thats good for my ssd though
 

FaithNoMore

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Jul 10, 2014
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Mine does it too mate. I thought my problem was a inadequate power supply. Mine doesn't do it when I leave it on stock settings in the bios. I read somewhere that it's syncing something when you change things. But I have my doubts on that.

my setup is:
Thermaltake LitePower 600Watt
Gigabyte 990fx ud3
FX8350
Gigabyte gtx 780 oc windforce GHZ edition
Kingston 16gb ram
Samsung 120gb ssd
WD 2 TB GREEN

 

rulejunior

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Jul 30, 2013
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That is actually what it is. Apparently it is a fail safe built into a lot of boards running the 990fx chipset (since it is the AM3+ overclocker's choice chipset) and it can revert the bios back to a stock setting after a unstable overclock. That's what I read and it seems correct, cause now that I am back at recommended defaults for my chip, it doesn't happen anymore
 

FaithNoMore

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Jul 10, 2014
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Phew! So I guess we didn't buy dodgy boards then!

Have you prime 95 tested your system yet? If you have. Does your downclock 1 core for a second to 3.4ghz then cycles to the next? Someone said prime 95 does that..others say it's VRM throttle? I'm gonna turn on HPC mode and disable cool and quite just to see if it's that.
 

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