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First time overclocking, new build! Questions about FX 8320E - Page 2

post #11 of 25
Thread Starter 
Yes, I noticed voltage value is much lower in windows than what is displayed in the bios.

I was looking to change LLC value from the default Auto, but is a bit confusing on the bios... I have these settings:
  • Auto
  • Low
  • Medium
  • Normal
  • Extreme
  • Default

They are not even listed in the correct order... I have read that High / Very High setting is commonly used on Asus boards, Extreme is to avoid.

Google reported this:
Quote:
As you can see, there is massive Vdroop under load and the MEDIUM LLC has the tightest range and is recommended when droops are preventing your stability.

As I understand it, vdroop is what causes voltage to be lower on Windows under load than on the BIOS, correct?

Can anybody confirm Medium is the best?
Edited by Ferd - 8/20/16 at 2:25pm
post #12 of 25
Quote:
Originally Posted by Ferd View Post


I'd like stability and lower those temps a wee bit if possible... found this table from 8320E review:

On my motherboard it should be possible to try lower the voltage to at least 1.25V and that would help a bit, correct?
As I understand, it is important to find lowest voltage possible for current overclock...

What settings do you suggest I should begin to fine tune from 'auto', could you give me a safe value example?

Ferd out thumb.gif

The table you posted is simply a guide, only you can test YOUR system to see if maybe it can do better. (as gapottberg mentioned). Yours could take more, and maybe less.
This is why I always start with CPU VID and NB VID values. In your case manually enter CPU Vcore = 1.113v and CPU/NB voltage = 1.163v.
Raise CPU multiplier .5, test.
If it passes raise multi another .5 and re-test.
If/when it fails (only when it fails) add just one or two bumps of Vcore and re-test, repeat till you can pass.

This method helps ensure lowest voltage possible.

I would make following changes,

BCLK Clock Control to 200MHz
CPU NB Freq to 2200MHz
HT Link to 2600MHz
CPU Clock ratio to 16 to start and work up to 20 (not auto)
System Memory Multiplier to 8.0
CPU Performance Boost to Disabled
C1E Support to Disabled (while testing)
SVM to Disabled (while testing)

Manually enter CPU VID and NB VID values along with Dram voltage, timings and Freq located on the sticker of Dram itself.
C&Q, C1E, SVM, Core C6 State, HPC Mode and APM should all be disabled while testing.
CPU core Control and CPB Ratio are Gigabyte specific and I can't help with those. Asus fan here.

There may be others but this is all I see from what you posted so far.

For LLC, again you should test your system to see which setting gives proper level at given OC.
As you raise the OC your LLC needs might change.
Edited by The Sandman - 8/20/16 at 2:29pm
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post #13 of 25
Thread Starter 
Alright, will try to do just that and will post results thumb.gif

Just to make sure I understand LLC, is it actually a voltage regulation system of the motherboard?


Looking at the screenshots I took earlier, I noticed that with Auto settings I was getting:
  • Vcore set to 1.275V on BIOS
  • Vcore 1.236 on HWInfo under load

So I ran an experiment, tried different settings with LLC Normal
  • Vcore 1.5V on BIOS
  • Vcore 1.4-5V on HWInfo under load

So as I understand, Normal multiplies the BIOS value by 0.9x - 1.0x and Auto multiplies to a stable value?
post #14 of 25
Quote:
Originally Posted by Ferd View Post

Alright, will try to do just that and will post results thumb.gif

Just to make sure I understand LLC, is it actually a voltage regulation system of the motherboard?


Looking at the screenshots I took earlier, I noticed that with Auto settings I was getting:
  • Vcore set to 1.275V on BIOS
  • Vcore 1.236 on HWInfo under load

So I ran an experiment, tried different settings with LLC Normal
  • Vcore 1.5V on BIOS
  • Vcore 1.4-5V on HWInfo under load

So as I understand, Normal multiplies the BIOS value by 0.9x - 1.0x and Auto multiplies to a stable value?

Maybe this will help a bit https://linustechtips.com/main/topic/24019-load-line-calibration-why-overclockers-should-care/
Make sure to read Part two at the bottom of the page as well.
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post #15 of 25
Thread Starter 
Thanks for the link!

I applied these settings:






I entered my timings manually, but I noticed that if I enable the XMP profile of my RAM, 'Profile VTT Voltage' makes a dramatic jump from 1.05V to 1.30V.
Can I ignore that?

Temps during IBT:


Will now start bumping up the frequency as you described thumb.gif I am quite curious to see what will happen...
post #16 of 25
Thread Starter 
Update:

Was running IBT at 3.4GHz@1.113V, when I noticed one of the readings in HWInfo made a dramatic jump (around 30 times) for a split second.
I took a screenshot, and aborted.



Should I worry? mellowsmiley.gif
post #17 of 25
Many monitoring programs will occasionally give false readings. When its something like that or say a temp that spikes at like 327'C for juat an instant it is a false reading. If you really had 30 something volts running through your board we would be talking about that time your board melted into a pile of plastic smoke and ash most likely. Make sure thr software is up to date and try maybe lowering the polling time. That sometimes helps with ghost spikes. You may also try different software all together to monitor if its a persistant and bothersome problem.
post #18 of 25
Thread Starter 
Oh thanks, suspected as much but that sure gave me an heart attack biggrin.gif

Reached 3.6GHz still at stock voltage so far, IBT finishes its test without error, but...
I noticed that sometimes 2-3 cores now drop usage to around 70-80% for a few seconds, maximum temp on VRM is 65 degrees and CPU is 35 degrees.

Does that mean I should bump up voltage up regardeless of IBT results?


EDIT: Windows froze at 3.6GHz@1.13V, bumped VCORE all the way to 1.3V but still had errors in IBT...
Turns out voltage in Windows was actually not going any higher than 1.109V with BIOS set at 1.3V!

Changing LLC from Normal to Extreme did the trick, I am having no issues running 3.6GHz@1.25V, HWInfo reports 1.18V.

VRM temps have increased by 7 degrees, which I don't like. Will try LLC Medium later.

I have read around that Gigabyte supports the Dynamic VCore feature (Voltage Offset being the Asus equivalent, if I understood correctly), is that worthy using over LLC in your experience? How would you approach it?
Edited by Ferd - 8/21/16 at 7:00am
post #19 of 25
Thread Starter 
Big update biggrin.gif

Reaching 4.0GHz was proving a bit difficult as I reached 1.22V and things were still unstable... temps were getting a bit too toasty, will go for 4.0GHz once I manage to install a VRM fan and improve airflow.

So I compromised for 3.8GHz@1.16V, passed IBT AVX Very High 20 runs thumb.gif

Here are screenshots from my BIOS settings:
Bios Settings (Click to show)




Screenshots of HWInfo and CPU-Z during final run of IBT AVX:
Temps (Click to show)




I re-enabled Cool 'n Quiet and the Virtual Machine support afterwards, is there more I should do? Anyway, here are my idle temps:




Thanks a ton for your patience and support! Is everything looking alright? biggrin.gif
Edited by Ferd - 8/21/16 at 12:41pm
post #20 of 25
Quote:
Originally Posted by Ferd View Post

I re-enabled Cool 'n Quiet and the Virtual Machine support afterwards,
If you turn power-saving stuff on after you need to test again.

My suggestion is to run Prime95 (ideally version 27.9) with custom FFT:

1) Turn on round-off checking/error checking in the program's main menu.
2) In the stress testing setup window — set so that around 85% of your RAM is used (13000 MB on a 16 GB Windows 10 system).
3) In the stress testing setup window — Set to 1 minute interval.

This will help you to determine if your northbridge core and RAM settings are stable. Just because the CPU Vcore is set properly doesn't mean you won't have RAM problems because NB Core isn't set right.

If you can run this for an hour without a problem then:

1) In the stress testing setup window — set to 700K – 900K FFT size
2) run "in place"
3) Use a 5 minute interval.

Run this for one hour as well. This should increase heat production. Instability will point to an issue with the VCore setting. If you are stable, with safe VRM temps, then lower your VCore a notch and test again or raise your overclock.
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