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First time overclocking, is this correct?

post #1 of 17
Thread Starter 
Hey guys so I did really extensive research on overclocking before commiting to this. A lot of people said it's really simple with the newer batch of processors but it was still a lot for me to take in.

This is on a Asus P8Z77-V Pro motherboard and Intel i5 2500k CPU with a Thermaltake water cooler.

I've been running Prime95 and I am stable now with my max temps at 67, 72, 74, and 70 but I am still not comfortable.

So I actually took pics of the settings I did for the overclock and if you guy can take the time to look it over and tell me what you think I would greatly appreciate it. I also have a few questions I'd like to ask after you look over the settings smile.gif

Thank you!







As for my questions:

1. Open hardware shows my CPU VCore at 1.344 when I'm idle. However when I am doing prime 95 it goes down to 1.328. Is that normal for it to go down under 100% load?

2. Core Temp shows my VID at 1.3961-1.4011. Should I be worried? I don't really understand what that is.

Thanks so much you guys I really appreciate it.
Edited by ImprovYield - 9/27/12 at 8:29pm
post #2 of 17
well, I would assume with more power going through the processor, the resistance of it would have to be lower and thus the voltage would drop a little bit... Kirchhoff voltage laws and whatnot.
post #3 of 17
Quote:
1. Open hardware shows my CPU VCore at 1.344 when I'm idle. However when I am doing prime 95 it goes down to 1.328. Is that normal for it to go down under 100% load?

That's vDroop, completely normal and part of the processor. Specification to prolong their lifespan under load.
Quote:
2. Core Temp shows my VID at 1.3961-1.4011. Should I be worried? I don't really understand what that is.

1.344 is sort of low if the VID is 1.4. VID of 1.4 means that the board should be supplying close to 1.4. Try turning the LLC up another step and it should be more balanced out I'm guessing.
    
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post #4 of 17
Thread Starter 
I turned the LLC up but now it's drawing 1.36 volts when I have it set to 1.35 in the UEFI.

PS: If it says it should be supplying 1.4 isn't that overkill for a 4.5GHz overclock? I heard you want it around the 1.35 range. If I set it to 1.4 the color turns red in the UEFI.
post #5 of 17
Not really sure how the VID will affect the supply, that's probably more motherboard and chip specific (as I am not an Intel person, my VID never changes). Odd though that there is a gap that large in your vCore and VID if your VID changes with it. I wouldn't really worry about the VID portion myself.

That said, if it is stable, I'd leave it on the settings you had previously. There are a few optimizations you can do regarding vCore idle/load with LLC to really "push" your overclocking potential, but for that, you'd probably want a guide. Again, not an intel person right now.
    
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post #6 of 17
Thread Starter 
Thanks and I was wondering I know you're not an intel person but I noticed that with the powersaving stuff like C1E, etc. enabled my speed keeps fluctuating even in games.

It goes 1.6 to 4.5, 1.6 to 4.5, etc.

In Prime95 it stays at 4.5 but during some games it keeps changing =/

Is that normal you think?
post #7 of 17
Are you experiencing bad performance in games when it does this? Or does it just happen unnoticed in the background?

100% sure that it is EIST/C1E causing the throttling and not a VRM or temperature problem? Though, if it doesn't happen in Prime, I'm sure the VRM is fine. This just comes to mind as my graphics cards idle a lot cooler than they load, and when the case heats up, the chip goes with it. rolleyes.gif

If you aren't experiencing performance loss though, I'd say it is normal. That the game isn't really "demanding" enough to get your CPU to throttle up out of EIST/C1E. This used to happen on mine during my WoW days where even my GPUs would stay in their 400Mhz strap as the game just didn't need more power to run it.

EDIT: If you want to test that thought, I'd recommend downloading something like 3DMark. Give it a graphical benching test and see if the CPU speed still drops.
Edited by mezmenir - 9/27/12 at 11:15pm
    
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post #8 of 17
Thread Starter 
Okay I'll also re-download BF3 to test it in that.

I'm sure it's not a temperature problem because my max temps in Prime 95 were 71 running for a few hours.
post #9 of 17
Don't worry about the VID, that's just the voltage programmed into the chip for that frequency. What matters is the Vcore, and as long as your chip is stable at the Vcore you are providing, it's fine. Actually it's a good sign that you can get your chip stable below the VID - that means you probably have room for more overclocking if you want.

As for the clock speed, it is EIST/C1E, and it is normal for the speed to drop if the game isn't demanding enough to require full CPU power, or if you were so GPU limited that the CPU wasn't having to work hard to keep up.

For the Vdroop issue, it's really not a problem as long as your chip is stable. You can counter-act it with higher settings of LLC, as you did, but that can sometimes cause short, but large, overvoltage conditions when the CPU switches from a heavy to a light load. Generally you should try to keep LLC as low as possible without affecting stability. Something in the middle of the range on your board (med, 50%, whatever they call it) is a good start.
post #10 of 17
Thread Starter 
So should I leave all the power saving options enabled?

There is...

Speed Step = On
C1E = Auto
C3= Auto
C6=Auto
Package C-State = Auto

Those are the default settings for it.

Will my overclock be stable with all those?

Another weird issue I noticed is that in idle it shows my CPU cores adding weird as well.

It keeps changing from 1.6 GHz to 4.5 even while idle. So I'm not sure what's going on. Is this how it is for everyone?
Edited by ImprovYield - 9/28/12 at 12:39am
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