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Haswell Overclocking Guide [With Statistics] - Page 999

post #9981 of 19540
Gpus need the be at default on BF4. I get alot of ingame crashes due to oc gpu settings. Same as bf3, bc2, eventually itll be updated
post #9982 of 19540
what do you recommend for c states on manual or offset?

I see in the guide to leave only C7 enabled, but for some reason, when using offset voltage , the only thing that dials down is the voltage, while the core speed stays 47. How can i get both voltage and core to downclock?
Edited by thrgk - 2/13/14 at 6:15am
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post #9983 of 19540
You need to have EIST enabled to have mutiplier drop at idle.
For both vcore and multiplier drop, I have everything enabled on my Gigabyte board (Turbo, EIST, C1E, C3, and C6/C7).

It might be called something slightly different, but you need these enabled in BIOS *and* be on Balanced in Windows.
(You should be able configure the power settings manually, but "Balanced" is a quick-setting that works)
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post #9984 of 19540
Quote:
Originally Posted by mav451 View Post

You need to have EIST enabled to have mutiplier drop at idle.
For both vcore and multiplier drop, I have everything enabled on my Gigabyte board (Turbo, EIST, C1E, C3, and C6/C7).

It might be called something slightly different, but you need these enabled in BIOS *and* be on Balanced in Windows.
(You should be able configure the power settings manually, but "Balanced" is a quick-setting that works)

ok cool, for some reason though I was stable for a week playing bf4, but then I changed a few things(forgot what) and updated bios and now cant get stable
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post #9985 of 19540
Quote:
Originally Posted by thrgk View Post

what do you recommend for c states on manual or offset?

I see in the guide to leave only C7 enabled, but for some reason, when using offset voltage , the only thing that dials down is the voltage, while the core speed stays 47. How can i get both voltage and core to downclock?

Enable EIST (aka SpeedStep)?

I see you've got an Asus board. I'm using manual voltage. I have all C-States enabled and EIST enabled and my volts and core both downclock. I have my min Cache Ratio set to 8 so my uncore downclocks too. With these setting my core idles at 800MHz, my uncore at 800MHz, and my Vcore goes to .016v. I'm using a "balanced" power plan in Windows.
Edited by coelacanth - 2/13/14 at 9:39am
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post #9986 of 19540
oh i have options to set min and max cpu cache ratio, but I thought you had to keep them the same, and within 300mhz of your multiplier.

"Min CPU Cache Ratio and Max CPU Cache Ratio: Defines the maximum and minimum cache ratios (ring bus frequency). The minimum ratio only comes into effect when processor power saving features are enabled.

Keeping these settings in sync with processor core frequency is recommened from a performance standpoint. Unfortunately, most CPUs cannot keep cache ratio in sync with processor core frequency when they reach their frequency limits. Therefore, we advise leaving these two settings on auto while overclocking to eliminate the ring bus as a possible cause of instability. Once the limits of processor frequency have been reached, you may experiment by setting the cache ratio within 300MHz of CPU core frequency and monitoring for impact on system stability.

CPU Cache voltage may need to be increased to facilitate stability at higher CPU Cache frequencies, although our auto rules do scale voltage in accordance with the Cache Ratio applied – you may not need to tune the voltage manually at all.
Running CPU Cache Ratio faster than processor core frequency does not show any performance gains so we recommend staying in sync with the CPU ratio or within 300MHz (lower than CPU frequency).
"
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post #9987 of 19540
Quote:
Originally Posted by thrgk View Post

oh i have options to set min and max cpu cache ratio, but I thought you had to keep them the same, and within 300mhz of your multiplier.

Nope not at all. Set them to whatever you feel like. I'm still dialing in my OC so right now I've got my CPU Core Ratio at 40, my Min Cache Ratio at 8, and Max Cache Ratio at 34.

Originally I had Min and Max Cache Ratio on Auto, and my Uncore never downclocked. So I just set Min and Max manually and everything is fine now with the uncore downclocking. I've never had a single BSOD so far.
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post #9988 of 19540
Quote:
Originally Posted by thrgk View Post

ok cool, for some reason though I was stable for a week playing bf4, but then I changed a few things(forgot what) and updated bios and now cant get stable

That sucks! I always either write my settings down or you can take a screen shot. I have the same board, I think it's the F12 button, from right in the bios and it will save it to a thumb drive.

You can also save the profile in the bios for an easy restore.
post #9989 of 19540
Quote:
Originally Posted by thrgk View Post

oh i have options to set min and max cpu cache ratio, but I thought you had to keep them the same, and within 300mhz of your multiplier.

"Min CPU Cache Ratio and Max CPU Cache Ratio: Defines the maximum and minimum cache ratios (ring bus frequency). The minimum ratio only comes into effect when processor power saving features are enabled.

Keeping these settings in sync with processor core frequency is recommened from a performance standpoint. Unfortunately, most CPUs cannot keep cache ratio in sync with processor core frequency when they reach their frequency limits. Therefore, we advise leaving these two settings on auto while overclocking to eliminate the ring bus as a possible cause of instability. Once the limits of processor frequency have been reached, you may experiment by setting the cache ratio within 300MHz of CPU core frequency and monitoring for impact on system stability.

CPU Cache voltage may need to be increased to facilitate stability at higher CPU Cache frequencies, although our auto rules do scale voltage in accordance with the Cache Ratio applied – you may not need to tune the voltage manually at all.
Running CPU Cache Ratio faster than processor core frequency does not show any performance gains so we recommend staying in sync with the CPU ratio or within 300MHz (lower than CPU frequency).
"

That information is misleading. It's been shown many times now that 1:1 CPU / Cache ratio can actually be bad in terms of OC ability and Uncore frequency doesn't make a big difference in overall performance.
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post #9990 of 19540
Quote:
Originally Posted by Barefooter View Post

That sucks! I always either write my settings down or you can take a screen shot. I have the same board, I think it's the F12 button, from right in the bios and it will save it to a thumb drive.

You can also save the profile in the bios for an easy restore.

and u leave c states enabled? whats a good cache voltage, initial and eventual voltages?
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