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Concerning Gigabyte`s GA-990XA-UD3 CPU Voltage

post #1 of 17
Thread Starter 
I`m hoping somebody can show me the error of my ways. I was overclocking my 1055T. For starters, at stock, or `normal` settings as it`s referred to in the bios, my cpu was set at 1.325v. And i understand that turbo core sets the voltage at 1.45... Anyways, I wanted to up my voltage manually to 1.45 with turbo core off of couse, to try to get a 4GHz overclock over the stock 2.8GHz. But when I upped my voltage, from the stock 1.35 by .125, I should have achieved 1.45, correct? But instead when I loaded windows and opened up HWMonitor, my cpu voltage was shown at 1.58v!!! I was in disbelief, and luckily I caught it before my Cpu popped. I rechecked my bios only to find that it updated my `normal`voltage to 1.45v instead of the previous 1.325v, and added another .125 ontop of that to achieve 1.575ish, or 1.58v as it showed in HWMonitor. I`m hoping I`m just retarded and screwed something up, and not that my motherboard sucks and I`m going to be stuck with buggy voltage for the next couple years. Any insight would be greatly appreciated. BTW, I am by no means a pro overclocker. I have overclocked all of my previous systems with ease though, with the help of forums such as this, and my old asus M2N32 would never behave like this. I`m starting to wish I had forked out the cash for the asus equivalent of this board. Note: 'Normal CPU Vcore' is 1.325 in bios, currently showing 1.360 in HWMonitor, Aida64 Extreme, AMD OverDrive and EasyTune6 (Gigabytes overclocking utility) Why the large difference?
post #2 of 17
what your seeing is llc and it's normal....it applies more voltage to balance the cpu's demand under load
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easyfps
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post #3 of 17
Thread Starter 
Thanks for the reply. Do you not find this 'balance' to be a little on the extreme side though? My M2n32 didn't have llc and I got along just fine, without extreme (and unexpected) jumps in voltage. Would you recommend turning llc off? I'd honestly rather have my voltage dip and have my pc lock up than have it overvolt and fry my cpu... what do you think? Anyone else with a 990xa-ud3 have similar experiences?
post #4 of 17
as far as your concerns on cooking your cpu.....keep your eye on max load temps...1.55v is what amd recommends you stay below but of course rules are made to be broken wink.gif
it's not recommended but is done to get stable at clocks over 4ghz....you are of course adding some risk to go above but as long as your temps are good it should be fine....i run 1.6v + through my 1100t 24/7 but my load temps never exceed 42c
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easyfps
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post #5 of 17
Thread Starter 
Another thought I just had, is it also possible that my 4GHz overclock would become unstable if I disabled llc, seeing as the llc is increasing my voltage significantly just to run it idle, let alone with a load?
post #6 of 17
Thread Starter 
Oh wow! 1.6+v! You must liquid cool that puppy...?!
post #7 of 17
Quote:
Originally Posted by otisinchains View Post

Thanks for the reply. Do you not find this 'balance' to be a little on the extreme side though? My M2n32 didn't have llc and I got along just fine, without extreme (and unexpected) jumps in voltage. Would you recommend turning llc off? I'd honestly rather have my voltage dip and have my pc lock up than have it overvolt and fry my cpu... what do you think? Anyone else with a 990xa-ud3 have similar experiences?

yes you can turn llc off....it will probably lose stability though....again...temps are the key....what is your cooling? and what are your load temps?

yeah i'm underwater but good air would work also as long as temps are acceptable
easyfps
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easyfps
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post #8 of 17
Thread Starter 
I just have a Xigmatek 1283, carefully lapped. I haven't lapped my 1055t yet, just breaking it in first. Considering it is generally known to add 10*c to temps, I've reached 62*c full load with prime95, and Idle I'm sitting at 42-44*c.
post #9 of 17
pretty warm.....are you running 2 fans?....can case cooling be improved to bring down overall temps?

you are at your thermal limits...to go any further with your oc you'll need to get temps down...your ok where you are...just no more room without some changes
easyfps
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easyfps
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post #10 of 17
Thread Starter 
This was also just a quick overclock just to get my feet wet with my new hardware. I'm sure I'll be tweaking this setup nonstop for a while. After lapping my cpu and some fine tuning, i'm confident I'll drop my temps 4-8*c more.
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