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Too much voltage? newbie overclocker in need of help AMD 1055T

post #1 of 9
Thread Starter 
So what I am trying for is a 3.8ghz OC on my Phenom 2 x6 processor.
System: 8gb 2000mhz patriot ram(note i underclocked it alot)
mobo = M4A89GTD Pro/USB3
Processor = AMD Phenom 2 x6 1055T
Cooler = Corsair H100( mounted on the 240mm rad mounts in the HAF X, fans pushing air through the rad and the megaflows200mm at the top exhausting it.

settings:
Multiplier = 14.0
FSB = 272
DRAM 1451mhz Voltage = 1.65, Its 2000mhz patriot ram but on my first test Prime95 gave me and error when i tried to burn test @1800mhz on the ram
NB 2750mhz Voltage is set to 1.25v
HTlink = 2183mhz Voltage is set to auto

CPU voltage is set as 1.46250 or something ( I typed in 1.46)
Now my problem or something that kind of bothers me is I set it to 1.46v but when I run prime 95 for the voltage goes to 1.500v than later on in the test it goes to 1.512v Is that safe? Its my first time and I have no idea. Using the H100 cooler in my HAF X I saw temperatures of 51C max after 30 minutes of prime95 and all cores on 100%

Also note my FSB is set @ 272 but in cpuz its 272.9 and under full load it jumps to 275.1 Guessing thats why the voltage goes from 1.500v to 1.512v.

Is this normal?
here is a SS i took.

Voltages too much? 522k .PNG file

Here are my stats? at Idle. Idle OC.PNG 498k .PNG file

NOTE: In HWmonitor the temps for my processor cores are wrong, don't know why but Asus PCprobe is more accurate aswell as there is shows Temperatures CPU in HWmonitor.
Edited by Gaupz - 2/5/12 at 6:43pm
post #2 of 9
I think that voltage is too high. I would try to get them lower.
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post #3 of 9
It's fine. Phenom II's are safe up to 1.55v vcore and 1.45v CPU-NB, so long as you can keep the temperatures low (below 55*C is preferred).

If you have any sort of Load Line Calibration (LLC) options, try screwing with those, that will help with the voltage jumping up so high under load.
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post #4 of 9
Quote:
Originally Posted by pioneerisloud View Post

It's fine. Phenom II's are safe up to 1.55v vcore and 1.45v CPU-NB, so long as you can keep the temperatures low (below 55*C is preferred).
If you have any sort of Load Line Calibration (LLC) options, try screwing with those, that will help with the voltage jumping up so high under load.

Best advise. And some motherboards have LLC built in and it's uncontrollable, like my Gigabyte 790x; it jumps about .025V at full load, annoying, but I suppose necessary.

If you can cool the processor well enough, you can do 1.6V on air fine, any higher than that, and well, dunno, I tried up to 1.65 on my 960T, but didn't seem to do much of anything, lol. I'm adventurous.
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post #5 of 9
Thread Starter 
Ah yah because ive noticed even on idle it will jump to like 1.45-1.46-1.47 and my bus speed will go to like 272(what its set at) to 277 or so.
post #6 of 9
I did find that if I manually configure the Pstates with K10stat it removes this issue completely. Not sure if that's a good thing, but no reason to add voltage un-necessarily.
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post #7 of 9
Thread Starter 
*******UPDATE*******

So i just went and did this with my settings
FSB = 272
DRAM 1451mhz
CPU-NB = 2750mhz
HT Link = 2186mhz
vCore = 1.46v (1.512 underfullload LLC)
Dram voltage = 1.65v
and I just left the CPU-NB and HTlink voltages on Auto and it worked really well.

Ran Prime95 for 5 hrs and got

temps ect 1836k .PNG file

NOTE: I don't know why but Coretemp/hwmonitor do not show the correct temperatures of my CPU cores, asus PCprobe seems to be more accurate but Speccy shows that temp as my motherboard temps.
I took some advice and offset my CPU temperatures in coretemp my 10C so my max temp showed as 45-47C plus or minus 3-5C and that seems pretty believable? I am using the Corsair H100 cooler.
post #8 of 9
:thinking.gif: hmm..according to your screenshot..your 12v rail is lacking..what psu do you have?
you may need a better one
that's a bit high for 3.8 ghz
not out of the realm of possibilities..but in the upper spectrum
btw..i have the same mobo.it's a good one..no RAMS over 1620-ish though frown.gif
 
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post #9 of 9
Thread Starter 
Quote:
Originally Posted by Schmuckley View Post

:thinking.gif: hmm..according to your screenshot..your 12v rail is lacking..what psu do you have?
you may need a better one
frown.gif

I have the CoolerMaster 850W SilentPro

Also I tried 1.45v and it did not even last a minute in prime, so i bumped it to 1.46 but the LLC takes it to 1.5v -1.512v under full load, I hear the chip is safe until about 1.55v so i should be alright judging by my temps.... I think.
Edited by Gaupz - 2/6/12 at 4:41pm
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