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How am I doing so far? 4670K result and adaptive voltage question?

post #1 of 15
Thread Starter 
Passed Aida64 for 6 hours (overnight) at manual 1.25V at 44x100. Cant do 45x100 even at manual 1.275V. Manual 1.275v actually draws around 1.292v according to AI Suite III when running Aida.


So overall, my chip is "average" or "below average". That said my temps are pretty good... during Aida they max around 82C and hover in the 70s even with the 1.292 spikes under manual 1.275v.



So I had a question regarding adaptive voltage to "daily drive" my stable 44x100 @ 1.25v OC... I cant seem to figure out how to set the ceiling in the BIOS (the math behind it). I have 2 controls....

Offset Voltage (ranges 0.001 to 0.999)
Additional Voltage for turbo (0.001 to 0.999)

The problem is I cant find the base voltage... I assumed it was the factory 1.008v but when I use Offset 0.001 and Additional at .25 (which the bios ads up to 0.251) which im guessing makes the overall voltage 1.259 under load( adding up 1.008v + 0.001 + 0.25) but I'm not stable there.

How do I get adaptive to act like my stable manual 1.25v OC but not suck power at that level during idle or low load?
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post #2 of 15
Thread Starter 
Any ideas guys? I've RTFM'd about 5 times and cant tell how to make the voltage ceiling under adaptive to equal 1.25v...
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Haswell Gaming
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post #3 of 15
Under the core voltage settings in bios there is manual, offset and adaptive and auto mode.
set adaptive mode
change the setting that corresponds to your core voltage one,
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post #4 of 15
Dont feel bad man I have a similar chip
post #5 of 15
haswell can barley overclock at all, it all has to do with memory, its a huge factor with haswell, try lowering memory multiplier and you might get more of an overclock. High performance ram is not a good option anymore with haswell.
post #6 of 15
Turns out bad chip, may return this , BELOW AVERAGE CPU. I can hit 1.25 at 44 that is my limit.See I have more thermal headroom, I max out at 72 on h100i, does that then mean I should increase voltage? They recommend not to go to 1.3 for haswell. If i can shoot more voltage maybe a higher overclock? My opinion is haswell is garbage. Asus took over 500 cpu's and 10 percent can do 4.6-4.8 50 percent 4.5 -4.6, and 43-44 below average, this is at about 1.2 to 1.25 volts leaving thermal headroom for AIO or good air coolers.
Edited by Jedson3614 - 6/14/13 at 9:45am
post #7 of 15
Until people get a better handle on how Haswell deals with offset voltages (and maybe new BIOSes are released) I would recommend just leaving it with a fixed manual voltage. Too many unknowns with offsets right now.
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post #8 of 15
^^^^^^ agreed, it has huge limits
post #9 of 15
Have no option for adaptive voltage in my bios . Z87x-ud3h. Isn't adaptive voltage a haswell thing. How can this not be a feature? Only have auto manual and offset
post #10 of 15
I took this information from: overclockers.com


Quote:
Offset Voltages
Offset voltages do just what you think it does – offsets the voltage +/- the amount you set. It takes the standard Intel voltage curve and just raises the whole darn thing, top to bottom. While this is better on your CPU than just a manually applied, constant voltage -and it used to be the best option for not running manual voltage- it’s not the best option any more.

Adaptive Voltage
Adaptive voltage is a lot smarter than your average offset voltage. What it does is raise the part of the voltage curve that you need under load, but leaves the lower end of the curve (when the CPU is operating at 800 MHz) alone. Thus, the higher voltage you need is there when the CPU calls for it, but you have no increase in idle voltage at all. This is going to be the best choice for letting your CPU breathe, as it were, when idle. You set the maximum voltage you want the CPU to get and go on your merry way knowing the CPU can draw the voltage it needs when it needs it.

Caveat – big, massive, honking, pay attention to this – caveat! When using adaptive voltage, the top of the curve isn’t necessarily the whole story. ASUS drove this point home when we met and I’m doing so now; we all need to do this as a public service to our users and readers. Even though you set 1.25 V as your maximum voltage, under certain very heavy loading conditions (i.e. stress testing), the voltage can and will exceed the maximum you have set. Let me say that again – if you stress test using adaptive voltage, even with the maximum set to 1.25 V, the CPU will – guaranteed – request and receive more voltage than you have told the motherboard to deliver it. It’s just the way this works.

In the ASUS demonstrations, setting a maximum 1.25 V in this scenario and then running something like AIDA64, Prime95, etc – any stress testing application designed to stress more than normal loads – the CPU requests and gets ~1.36 V. There is nothing you can do about this and it will happen whether you want it to or not. The only way to prevent stress testing programs from pulling extra voltage is to use a manually set voltage, which takes away your CPU’s ability to reduce voltage when idle.

All is not lost though! You probably noticed every time I told you what would happen it went hand in hand with stress testing. That’s because those are the only scenarios that will lead to this behavior. In all other circumstances so far as ASUS can tell, the CPU will cap at the set 1.25 V and never exceed it. Even if you’re Folding@Home it should maintain the 1.25 V cap (though those folding at home are under 100% load all the time and I’d suggest using a manual voltage for those machines just in case). Likewise, video encoding, audio encoding, compression, rendering – any CPU-intensive process, your CPU will maintain the 1.25 V cap.

So, now that you know the very important caveat, set 1.25 V as your maximum voltage with adaptive voltage, enable C1E and EIST (which throttle your multiplier and voltage when not under load) and go on with your merry life knowing your CPU is as relaxed as it can get when idle.
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INTELligent
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