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**Official** ASRock Fatal1ty Z68 Professional Gen 3 Owners Club - Page 26

post #251 of 522
Quote:
Originally Posted by mybadomen View Post

Is it stable IBT Max Load and 12 hours prime.
I could boot no problem 5.0 with low volts easily like now i can boot 5.4 on 8 threads with 1.5v but definitely not stable.

nah i just got validate smile.gif but i think here is the real deal with my cpu

CPU-Z Validate i got IBT but i have some settings in auto i'm try now to set manual if i can.
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post #252 of 522
Quote:
Originally Posted by complexlogic View Post

Actually, JJFIVEOH is partially correct in terms of what the practical effect is of higher levels (lower numbers) of LLC. The different levels of load line calibration are there to eliminate vdroop as deafboy points out. However, the effect of the different LLC levels in practise results in a lower idle vcore for LLC level 1 than for LLC level 5 at the same full load vcore.
If we assume an overclock of N Ghz, where the full load vcore is Y volts, then the idle vcore X as a function of the load line calibration level will satisfy the condition that LLC1(X) < LLC2(X) < LLC3(X) < LLC4(X) < LLC5(X). That's because as we change the load line calibration level from 5 towards 1, we need to dial in progressively less fixed vcore or offset in order to achieve our desired maximum vcore of Y as less and less voltage is shaved off the full load vcore. Put another way, if we're using a LLC level of 5, then we need to have a higher vcore offset or fixed vcore in order to achieve the same full load vcore of Y volts than we would need with a LLC setting of level 1.
The natural question that follows is thus, "why don't we just set it at level 1, which then enables us to more accurately achieve our target full load vcore and also enables us to minimze the idle vcore". Well, that's because vdroop has a function. It's there to prevent severe voltage supply overshoot during periods of transition from heavy-to-light load, as the VRM modules cannot respond instantaneously to changes in load. Eliminating vdroop could lead to situations under heavy-to-light load transitions where the momentary peak voltage significantly exceeds the vcore maximum. So it's always desirable to work with the lowest level (ie, the higher number) of LLC that will allow you to achieve a stable overclock. This article has a very good explanation of why vdroop exists

Regardless, you want to select the level that best suits your OC and is as close to the settings set in the BIOS, that's the whole point of the levels. LLC on older and cheaper boards don't have levels, and while they do help droop, they often still have noticeable droop. The LLC levels are designed to work and fit whatever fits best.

That last part I don't agree with, you don't want the lowest level (highest number) of LLC to achieve a stable overclock. You want to select whatever level best matches the vcore set in BIOS to match the vcore at load. You could easily have a Level 5 with higher vcore set in bios be the same vcore at load as a Level 2 with a lower vcore set in BIOS.
 
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post #253 of 522
Quote:
Originally Posted by deafboy View Post

Regardless, you want to select the level that best suits your OC and is as close to the settings set in the BIOS, that's the whole point of the levels. LLC on older and cheaper boards don't have levels, and while they do help droop, they often still have noticeable droop.

Yes, that is the point of the LLC levels. So that you can more closely match the bios setting to the actual vcore under load by progressive elimination of the vdroop. That does not mean, however, that it is desirable or correct to eliminate vdroop. Vdroop is there for a reason.
Quote:
Originally Posted by deafboy View Post

That last part I don't agree with, you don't want the lowest level (highest number) of LLC to achieve a stable overclock. You want to select whatever level best matches the vcore set in BIOS to match the vcore at load. You could easily have a Level 5 with higher vcore set in bios be the same vcore at load as a Level 2 with a lower vcore set in BIOS.

You do want the lowest level of LLC you can use. However, at no time did I state that you want the lowest level you can use so that you can achieve a more stable overclock. You want the lowest level you can use in order to minimize the risk of voltage overshoot that can damage your CPU.

You are correctly articulating what the different levels of LLC do and to be clear, I haven't stated anything to the contrary. However your assertion that you want to "select whatever level best matches the vcore set in BIOS to match the vcore at load" shows that you believe vdroop to be a bug or an aberration that should always be eliminated. Vdroop is a designed in feature of the Intel CPU that is meant to protect from voltage surges during heavy-to-light load transition. Eliminating vdroop, even partially, could easily lead to the vcore well exceeding the level specified in the BIOS when the CPU is making a heavy-to-light load transition

In the latter case you cited, where you have a level 5 setting where the vcore at load matches the vcore at load of a level 2 setting, you would be well advised to use the level 5 setting. The level 2 setting would be running the CPU outside of its design specifications whereas the level 5 setting would not do so. Since they both would have the same effect, there is no need to violate design specifications by using the level 2.

At risk of labouring the point, here is a link to a quick summary of vdroop, as well as a link to the original article on Anandtech cited in the summary.
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post #254 of 522
All valid points and good info from everybody. LLC is just a means to control vdroop or the range between min and max. I agree, you don't need to have a low LLC (numerically higher) to achieve high OC. Some people might OC to 4.8 GHz with a +.07 offset and some might hit 4.8 GHz with -.01 offset. Say you find the perfect max vcore for OC'ing but your comp has a tendency to lock up at idle, so you need to increase the min vcore. Since LLC increases or decreases the max vcore by .04 for each level, the only way to increase you min vcore is by increasing your offset. So you can increase the offset by .04 to keep your comp stable at idle but this will also increase your max vcore by .04. So to lower your max vcore back to where it was while still keeping the min vcore raised by .04, you lower the LLC (numerically higher) by one level. This will take your max vcore back to where it was and your min vcore will be raised by .04. And this also works vice versa if you need raise your max vcore and you're stable at idle.
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post #255 of 522
Exactly...you want the level that best suits your OC. The lower the LLC level the better, but not if that means you have to shove more volts than you need at it. Power systems these days are much better than they were even a couple years ago. If you have a high OC, and need a high level LLC to get it stable, you are probably well aware of the risks.

The whole point of the entire thing is that you are monitoring the values throughout tests to make sure they are within what YOU expect them to be, regardless what Intel would like, haha.

When I said "select whatever level best matches the vcore set in BIOS to match the vcore at load"...it was in strong reference to "select the level that best suits your OC"

It is my assumption on here, that most people that are even messing with these settings have an idea of what they are doing and the possible downsides.

Anyways, I agree on a lot of what everyone has said and I'll just leave it be.
 
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post #256 of 522
Should I be seeing mid to high 30's CPU temps at idle? My ambient temp is about 25° and I rarely saw anything in the 30's at idle with this same CPU in an Asus MIVE. I'm using an H50 and I've already had it off a couple of times, even tried a different thermal compound......... with no change. What's odd is I consider my temps at load to be pretty decent considering the cooler so the idle temps confuse me.
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post #257 of 522
Quote:
Originally Posted by skyn3t View Post

here is my 24/7 stable if you guys think my settings is a bit high let me know thumb.gif
338


offtopic.gif What is that dock above your task bar? Where did you get it?
post #258 of 522
My ASUS p8z68-v/gen3 just took a crap on me. Thinking about getting this board as I do not want to wait a month for the RMA. I had one before, and the bios was all buggy and messed up. I updated it to the most recent bios and it did not help. This was an open box from new egg. Thinking about giving this one another try....
post #259 of 522
Thread Starter 
Quote:
Originally Posted by mybadomen View Post

Not sure if i am in the Z68 Fatality Club but am still in the p67. Please add me .Venom is running the AsRock Fatal1ty Pro Z68 Gen 3..
All benchmarks done on just my loop and the AsRock Fatal1ty Pro Z68 Gen 3 so you can see it does great in all areas.
5.2 GHz Validated and running prime stable. (Only run 24/7 @ 5GHz though) Benchmark so far @ 5.2 & 5.3 GHz don't want to risk pushing it.
338
Breaking 10 points in Cinebench 17-2700k
338
Quick Ram benchmark
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313
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647
Take care and please add me to the Club
MybadOmen

You've been added to the members list. Welcome! thumb.gif
Quote:
Originally Posted by selluminis View Post

My ASUS p8z68-v/gen3 just took a crap on me. Thinking about getting this board as I do not want to wait a month for the RMA. I had one before, and the bios was all buggy and messed up. I updated it to the most recent bios and it did not help. This was an open box from new egg. Thinking about giving this one another try....
Get one! It's good thumb.gif I've added you to the future owners smile.gif
    
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post #260 of 522
Quote:
Originally Posted by CarlosSpiceyWeiner View Post

You've been added to the members list. Welcome! thumb.gif
Get one! It's good thumb.gif I've added you to the future owners smile.gif

I will be getting it tomorrow. Looking forward to this.
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