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Overclocking my 1045T and my MB automatically ups the voltage? Confused.

post #1 of 15
Thread Starter 
So today I picked up a CPU/MB combo from Micro Center. I got the AMD Phenom II X6 1045T and the Gigabyte 990FXA-UD3 for $160, which was a pretty good deal if you ask me. Anyway, I have been messing around with my overclock tonight, and EVERYTHING in my M.I.T. is set to "manual."

Here are my settings:
CPU Ratio: x13.5
CPU NB Freq: x9
Core Boost: Disabled
CPU Freq: 296 (3996 MHz)
HT Link: x7 (2072 MHz)
Memory Clock: x5.33 (1577MHz)

I have found it to be pretty much stable at those settings, but here's what is confusing me, my voltages:

CPU PLL: Normal (2.5v)
DRAM: 1.65v
NB Voltage: 1.165v
HT Link: Normal (1.2v)
NB/PCIe/PLL: Normal (1.8v)
CPU NB: +0.225v (1.300v)
CPU: +0.100v (1.325v)

AMD Cool & Quiet is DISABLED.

When I am stress testing, I noticed that my core temp is getting much higher than it should be at those voltages, so I opened up CPU-Z while it is stress-testing with LinX and found that my CPU voltage is not staying at 1.325. It is jumping up as high as 1.440v during my testing. That is a huge difference for it to be jumping up, especially when I have everything set to manual and turbo is disabled. Why is my CPU voltage jumping up so high? I would rather it NOT do that and just bluescreen if the VID is too low and I will adjust it manually. Any suggestions, or should I just plan for that to happen when I am overclocking?
    
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post #2 of 15
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post #3 of 15
If your have rev. 1.1 of UD3, then there must be LLC feature in BIOS to stablize voltage drop/up. I really don't know how this works, but I've read somewhere in this forum that it can solve voltage relatet problem....well It's not bad you are getting 1.44v at 3.996GHz, because my 1055T at 4.004GHz fails at 1.425v, but perfectly stable at 1.456v in Prime95 blend.
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post #4 of 15
Thread Starter 
Quote:
Originally Posted by sumitlian View Post

If your have rev. 1.1 of UD3, then there must be LLC feature in BIOS to stablize voltage drop/up. I really don't know how this works, but I've read somewhere in this forum that it can solve voltage relatet problem....well It's not bad you are getting 1.44v at 3.996GHz, because my 1055T at 4.004GHz fails at 1.425v, but perfectly stable at 1.456v in Prime95 blend.

Thanks for the info. I'll look around in the BIOS to see if I can find anything like that and report back.
    
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post #5 of 15
Thread Starter 
Adjusting the LLC actually solved the problem. Now my voltage isn't jumping up so high. Thanks smile.gif! Also, since I was able to stop it from jumping so high, I am actually 100% stable @ 4.01GHz (13.5x297) at 1.42v, and it actually stays stable at that voltage all the way up to 4.1GHz! Seems like I got a nice little chip here smile.gif
    
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post #6 of 15
Quote:
Originally Posted by karmuhhhh View Post

Adjusting the LLC actually solved the problem. Now my voltage isn't jumping up so high. Thanks smile.gif! Also, since I was able to stop it from jumping so high, I am actually 100% stable @ 4.01GHz (13.5x297) at 1.42v, and it actually stays stable at that voltage all the way up to 4.1GHz! Seems like I got a nice little chip here smile.gif

damn that is a good deal for $160 have fun, also out of curiosity what kind of temps do you get doing Intel Burn? Also what was your final Frequencies, CPU and NB

-doober
post #7 of 15
Quote:
Originally Posted by karmuhhhh View Post

Adjusting the LLC actually solved the problem. Now my voltage isn't jumping up so high. Thanks smile.gif! Also, since I was able to stop it from jumping so high, I am actually 100% stable @ 4.01GHz (13.5x297) at 1.42v, and it actually stays stable at that voltage all the way up to 4.1GHz! Seems like I got a nice little chip here smile.gif

smile.gif
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post #8 of 15
Thread Starter 
Quote:
Originally Posted by Doober View Post

damn that is a good deal for $160 have fun, also out of curiosity what kind of temps do you get doing Intel Burn? Also what was your final Frequencies, CPU and NB
-doober

Hey, sorry for taking so long to get you my results. Anyway, here are my settings:

Frequencies:
CPU Clock: x13.5 - 4009MHz
CPU NB Freq: x8 - 2376MHz
CPU Freq: 297
HT Link: x7 - 2079MHz
Mem Clock: x5.33 - 1583MHz

Voltages:
DRAM: 1.65v
NB: 1.165v
HT: 1.200v
CPU-NB: 1.35v
CPU: 1.35v (with the LLC set in the middle at "high")

As far as my temperatures go: Idling I am at 25C with an ambient of about 21C. I don't use IBT, but I do use LinX which is the same linpack test. At 2048MB test size running 10 passes, I get a maximum of 55C. Running P95 for 15 hours resulted in a maximum temp of 54C.

Not too shabby I would say.
    
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post #9 of 15
So does your voltage stay at 1.35 under load or the 1.45v like you mentioned in your other thread? What kind of ambient temps do you have? because keeping your CPU at 55c or less with a 92mm cooler and 1.45v seems really good (maybe to good like a temp sensor is off)

-doober
post #10 of 15
Thread Starter 
No, I have my LLC set to "high" (which is the middle setting) so the voltage will fluctuate from 1.36v idle to 1.42v when under stress according to HW Monitor and CPU-Z. After running P95 for 15 hours, the voltage never exceeded 1.42v @ 4.01GHz, so I am no longer hitting 1.45v like earlier.

Also my ambient temps have been around 20ish Celsius with my windows open. I am getting my core temp readings using Core Temp 1.0 RC3 as well as HW Monitor.
    
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