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Haswell Overclocking Guide [With Statistics] - Page 1145

post #11441 of 19539
Quote:
I need detailed information about the uncore ratio. I understand its separate from the multiplier. What I would like to know is the "IMPORTANCE" of it as far as performance and overclocking.

This is talked about in the OP

It only makes a real difference being at 45x as opposed to say 33x in niche workloads, most benches show +100mhz on core giving significantly higher returns than +500mhz on uncore

If you're not pushing the chip really hard (like 1.4vcore) then it's probably best to just clock to what you can with like 1.2v set on uncore, after you found your max core OC
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post #11442 of 19539
So you still didn't answer my question. What if you cant go past 35x uncore even if your able to get 47x. Or lets say you can do 44x, and a 40 uncore. Which is better the uncore ratio or the higher overclock ?
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post #11443 of 19539
Quote:
Originally Posted by Jedson3614 View Post

So you still didn't answer my question. What if you cant go past 35x uncore even if your able to get 47x. Or lets say you can do 44x, and a 40 uncore. Which is better the uncore ratio or the higher overclock ?
Quote:
most benches show +100mhz on core giving significantly higher returns than +500mhz on uncore

That's pretty much as direct as i could lol

47/33 would DESTROY 44/40 in any bench i've seen
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post #11444 of 19539
The higher cpu clock will win, overclocking the uncore as high as possible after getting the core figured out may give more performance in some things, but won't be noticeable in others.
    
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post #11445 of 19539
Quote:
Originally Posted by Cyro999 View Post


That's pretty much as direct as i could lol

47/33 would DESTROY 44/40 in any bench i've seen

This makes more sense the way you said it vs +100, I had no idea where you came up with that number.
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post #11446 of 19539
Quote:
Originally Posted by Jedson3614 View Post

This makes more sense the way you said it vs +100, I had no idea where you came up with that number.
for my 24/7 settings I can bring my cache speed up somewhat but I normally dnt bother. I just do 1.25v @ 42 and forget it. It shows more performance overclocking ram than cache on my rigs. Cinebech scores that is.
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post #11447 of 19539
Thread Starter 
Quote:
Originally Posted by Jedson3614 View Post

I need detailed information about the uncore ratio. I understand its separate from the multiplier. What I would like to know is the "IMPORTANCE" of it as far as performance and overclocking. I have read many threads and articles about haswell overclocking suggesting it be within certain ranges of your multiplier. Mostly 300-500 MHz. This seems crazy to give a number or a suggestion. What if I find my multiplier stable at 45x but only with a default 35x uncore. Would I take the higher multiplier ? Should you search for your overclock multiplier first, and then raise uncore separately for stability testing. What I am trying to find is answers to what I should do for my own machine or apply principals to follow. I have a 43x multiplier set with 35x uncore. Should I try and check for a higher uncore to get within that 500 MHz range ? Is there even a noticeable difference in raising the uncore to match those ranges. SINS guide says its not really noticed until above 4.5 ghz. I'm just trying to figure out at 43x how important it is to raise the uncore. I know in this particular thread he states in a perfecnt world everyone would be 1:1 ratio. I understand he suggests not everyone should be able to do this, but he still says it would be nice. So does that suggest you do need to change the uncore from 35x to something ? Should I even worry about the uncore as far as speed is concerned ?

 

 

Quote:
Originally Posted by Jedson3614 View Post

So you still didn't answer my question. What if you cant go past 35x uncore even if your able to get 47x. Or lets say you can do 44x, and a 40 uncore. Which is better the uncore ratio or the higher overclock ?

One of the ways this guide differentiates from the really early guides for Haswell back from July of last year is my testing of uncore instead of taking claims about it on face value.

 

Let me put it very simply as the guide states: You want 45/34 over 44/44. There is no "bonus performance" for keeping 1:1. The performance increase of each extra 100mhz of uncore is pretty linear and stays pretty constant whether you are at x34 uncore or x45 uncore. And the performance benefit is measurable only by benchmarks, and not really measurable while gaming even if you are looking at FRAPs.

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post #11448 of 19539
Currently i have a 4670k with a G1 sniper z87 and 212 evo

Im running at stock speeds,(3.8)

Current bios settings(on auto btw) has the V.core at 1.130v

In hwmonitor it shows the Vid as 1.130v and the vcore as 1.140v.When i ran a stress test after building this rig just to checked it was all working fine i used IBT and it peaked the Vcore at 1.212 according to hwmonitor

Now from reading the OP i understand what the vcore/vid in hwmonitor are actually saying,and why they are different,same goes for why in IBT my vore is higher than its set in the bios(synthetic testing ect.)

Basically im wondering if i manually set vcore to 1.2/1.25 region and set the turbo multipliers to 42/43/44,would this be likely to offer a stable and easy to implement OC(after stressing ofcource)

Coming from AMD the amount of variables that may require changing for a haswell OC is quite daunting and time consuming imo
post #11449 of 19539
Quote:
Originally Posted by MrMD View Post

Currently i have a 4670k with a G1 sniper z87 and 212 evo

Im running at stock speeds,(3.8)

Current bios settings(on auto btw) has the V.core at 1.130v

In hwmonitor it shows the Vid as 1.130v and the vcore as 1.140v.When i ran a stress test after building this rig just to checked it was all working fine i used IBT and it peaked the Vcore at 1.212 according to hwmonitor

Now from reading the OP i understand what the vcore/vid in hwmonitor are actually saying,and why they are different,same goes for why in IBT my vore is higher than its set in the bios(synthetic testing ect.)

Basically im wondering if i manually set vcore to 1.2/1.25 region and set the turbo multipliers to 42/43/44,would this be likely to offer a stable and easy to implement OC(after stressing ofcource)

Coming from AMD the amount of variables that may require changing for a haswell OC is quite daunting and time consuming imo

It seems daunting at first but really you're just adjusting 5 variables -- 3 voltages and 2 multipliers:

1) CPU Voltage (VID)
2) VCCIN / VRIN / Eventual voltage
3) CPU Cache voltage
4) Core multiplier
5) Cache multiplier

That's it.

Start off setting cache (uncore) multiplier to 33 and CPU Cache voltage (uncore) voltage to 1.15.
Observe your max Vcore with HWInfo at bone stock and enter that max voltage in as your VID.
Observe your max VCCIN / VRIN / Eventual with HWInfo at bone stock and enter that max voltage in as your VRIN.

Test by only changing 1 variable at a time. Eventually as you step up your core multi you will BSOD. Increase Vcore by .025v and retest.
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post #11450 of 19539
Quote:
Originally Posted by MrMD View Post

Currently i have a 4670k with a G1 sniper z87 and 212 evo

Im running at stock speeds,(3.8)

Current bios settings(on auto btw) has the V.core at 1.130v

In hwmonitor it shows the Vid as 1.130v and the vcore as 1.140v.When i ran a stress test after building this rig just to checked it was all working fine i used IBT and it peaked the Vcore at 1.212 according to hwmonitor

Now from reading the OP i understand what the vcore/vid in hwmonitor are actually saying,and why they are different,same goes for why in IBT my vore is higher than its set in the bios(synthetic testing ect.)

Basically im wondering if i manually set vcore to 1.2/1.25 region and set the turbo multipliers to 42/43/44,would this be likely to offer a stable and easy to implement OC(after stressing ofcource)

Coming from AMD the amount of variables that may require changing for a haswell OC is quite daunting and time consuming imo
I suggest you set vcore to 1.3v try and boot 4.6. Set everything else to auto except cache/uncore to 3.4.

You need a starting point. If it doesnt boot you can either raise voltage or lower mhz depending on your goal. Same for stability after you get it to boot.

I came from amd too. Now im on my 3rd 4670k (sold one). Different people might sugest starting at 1.25vcore. I just never had a chip that got over 4.4.at that voltage.
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Overclock.net › Forums › Intel › Intel CPUs › Haswell Overclocking Guide [With Statistics]