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Haswell Overclocking Guide [With Statistics] - Page 1049

post #10481 of 19539
Quote:
Originally Posted by FractinJex View Post

imo ultra is the better option. As it should never truly harden and allow for removal of the IHS in the future without issues.

also some say the clu may need to be replaced...however I don think it will be. The only reason imo to havto replace or add more CLU over time is if you didn't add enough to start with or...the cpu sat for a long period of time letting the clu harden some and may require it to be heated or put under heavy load.

but ietehr way id say the clu should last as long the pro 5+ years
http://www.overclock.net/t/1351984/coollaboratory-liquid-ultra-vs-liquid-pro-vs-phobya-liquid-metal/0_10
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post #10482 of 19539
Quote:
Originally Posted by tomlev5 View Post

A software bug can't cause a BSOD, so beta is not problematic in this case.

Sure they can and do.
post #10483 of 19539
Quote:
Originally Posted by GeneO View Post

Sure they can and do.
Yes, I know that system software can make a BSOD, but software that only crunches numbers can't couse a BSOD (Unstable hardware couses BSOD in this case).
post #10484 of 19539
Quote:
Originally Posted by tomlev5 View Post

Yes, I know that system software can make a BSOD, but software that only crunches numbers can't couse a BSOD (Unstable hardware couses BSOD in this case).

Yes, I believe P95 does not have driver level software, but stressing the CPU like it does can unveil latent software bugs in drivers, or hardware (e.g. CPU microcode) bugs.

I should add though, I think I agree, this is probably something in hardware. I think I can push the 101 out further by twiddling with voltages, but just can't eliminate it.

-
Edited by GeneO - 2/27/14 at 6:27am
post #10485 of 19539
Quote:
Originally Posted by Cyro999 View Post

AFAIK, it's "supposed" to be 20mv on vcore, 30mv on cache, the software sensors only track in ~8mv increments and they're not perfectly accurate even at those, so it's hard to display. Since i've not seen any real cases it it being higher, i'l just go ahead and assume that +0.02/+0.03 is correct

All of these measurements are taken from looking at the maximum reached with HWInfo:

At 4.0GHz
Vcore .014v higher than set in BIOS
Vcache .039v higher than set in BIOS
Vrin .038v higher than set in BIOS

At 4.2GHz
Vcore .014v higher than set in BIOS
Vcache .042v higher than set in BIOS
Vrin .038v higher than set in BIOS

At 4.3GHz
Vcore .016v higher than set in BIOS
Vcache .045v higher than set in BIOS
Vrin .054v higher than set in BIOS

At 4.4GHz
Vcore .023v higher than set in BIOS
Vcache .049v higher than set in BIOS
Vrin .054v higher than set in BIOS

At 4.5GHz
Vcore .032v higher than set in BIOS
Vcache .058v higher than set in BIOS
Vrin .060v higher than set in BIOS

You can see that as frequency increases, the amount that measured voltage overshoots what is set in BIOS increases. This is with an Asus Maximus VI Hero (1301 BIOS). You may also think that as one increases the voltage in BIOS that the overshoot also increases. But the overshoot increases as the frequency goes up even when the values set in BIOS are unchanged. For instance, my Vcache was set to 1.090v in BIOS at 40x, 42x, 43x, and 44x, yet the overshoot increases as frequency increases. The data show that as frequency increases, the amount of overshoot also increases.

Here's a summary of the data in graphical format:


Edited by coelacanth - 2/27/14 at 9:52am
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post #10486 of 19539
Ok so i bought my first i7 system. 4770k. I just want to know how i can overclock it. i did the asus tweak thingy that auto overclocks but i think my memry might be the reason for the small overclock. I got it to 4.3GHz but my memory is Adata xpg v2 2400MHz 1.65v. I lowered it to 2133mhz @ 1.5v and it works so far. So anything i can try to get over 4.3GHz.


I have afterburner running and have and h100i cpu cooler with pull config as i don't have dust filters on top on quiet mode my cpu reached 80C on the asus test @ 4.4GHz then my pc restarted. so my safest settings is 4.3 so far and I see it's on auto volts. I did a test on battlefield 4 and cpu never goes over 65C on the hottest core but i also switched my corsair to balanced mode.

forgot to mention my motherboarrds is the Asus z87-a
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post #10487 of 19539
Quote:
Originally Posted by DiceAir View Post

Ok so i bought my first i7 system. 4770k. I just want to know how i can overclock it. i did the asus tweak thingy that auto overclocks but i think my memry might be the reason for the small overclock. I got it to 4.3GHz but my memory is Adata xpg v2 2400MHz 1.65v. I lowered it to 2133mhz @ 1.5v and it works so far. So anything i can try to get over 4.3GHz.


I have afterburner running and have and h100i cpu cooler with pull config as i don't have dust filters on top on quiet mode my cpu reached 80C on the asus test @ 4.4GHz then my pc restarted. so my safest settings is 4.3 so far and I see it's on auto volts. I did a test on battlefield 4 and cpu never goes over 65C on the hottest core but i also switched my corsair to balanced mode.

forgot to mention my motherboarrds is the Asus z87-a

Read the OP (original post) for detailed instructions for how to OC your 4770K.

You're going to be messing with only about 5 variables
1) CPU multiplier
2) Cache Ratio multiplier
3) VID (core voltage)
4) Cache voltage (aka VRing, Vcache, CPU Cache Voltage, VCCRING)
5) Eventual voltage (aka VRIN, VCCIN)

You may end up playing with LLC, XMP, and a few others as well but those are the big 5.

And you might want to tweak other things in BIOS as well like turning off unused onboard devices etc.
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post #10488 of 19539
Quote:
Originally Posted by coelacanth View Post

Read the OP (original post) for detailed instructions for how to OC your 4770K.

You're going to be messing with only about 5 variables
1) CPU multiplier
2) Cache Ratio multiplier
3) VID (core voltage)
4) Cache voltage (aka VRing, Vcache, CPU Cache Voltage, VCCRING)
5) Eventual voltage (aka VRIN, VCCIN)

You may end up playing with LLC, XMP, and a few others as well but those are the big 5.

And you might want to tweak other things in BIOS as well like turning off unused onboard devices etc.

ok will check out. thanks for the info
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post #10489 of 19539
Quote:
Originally Posted by DiceAir View Post

ok will check out. thanks for the info

You're going to want to maximize your core speed first, so you're going to isolate it.

Before you get started, boot into windows at bone stock and use HWInfo to look at your VID, your max eventual voltage (under load), max cache voltage (under load).

Reboot and go to BIOS and start with the following:
Drop your Max CPU Cache Ratio to 34 and manually set CPU Cache Voltage to 1.1v or. 1.15v. (I also like to set Min CPU Cache Ratio to 8x so it downclocks -- mine doesn't downclock unless I manually set the multiplier to do so.)
Set your RAM to run at 1333 or 1600 MHz. Don't use the XMP profile for now.
Set your CPU Core Voltage to what you observed as your VID.
Set your CPU Core multiplier to 40.
Set your Eventual voltage to ~1.75v or 1.8v (or whatever you observed as the max under load).

Start stress testing.

Once you're satisfied with your core speed, repeat the process for OCing your Cache frequency.

Once you're all done with that then you can enable XMP.

After you're all satisfied with your OC, you can enable more C-States. I keep EIST on all the time, even when I'm testing my OC, but lots of people like to keep that disabled when testing their OC.
Edited by coelacanth - 2/27/14 at 12:20pm
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post #10490 of 19539
ok so for stress test i'm running aida64 and max cpu temps = 75 -80C. i'm to scared to delid my chip as that might break it. My volts is on auto and going up to 1.3V ouch a bit high. How can i make my volts dynamic but only go up to 1.22V max or should i First try 1.2V?
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