6700k Overclocking Help

Casterina · 11 Jun 2016 at 11:45

Hi all,

I have the Asus Maximus VIII Gene motherboard with the 6700k, I want to overclock the chip to around 4.7GHz but I don't know what is the best overclock settings for my board such as LLC.

Also, I prefer to use offset voltage than manual since I would like the voltage to drop down when it is idle or low CPU usage but what is the difference between offset and adaptive?

Thanks

Silent_Scone · 11 Jun 2016 at 12:28

I'd suggest reading through this firstly.

https://drive.google.com/file/d/0Bz2VRRbLPrZnMXBnOXRWeVlHcHM/view?usp=sharing

Danny75 · 11 Jun 2016 at 13:17

Good read that, Silent Scone.

Just to clear something up - there's no need to input an Offset value along with enabling Adaptive for voltages to drop when idle. Just enable Adaptive and enter the total Vcore in "Additional Turbo Mode CPU Core Voltage". Then you'll have an Adaptive Turbo overclock. The voltages will remain on default for every other speed (800-4000MHz) but boost to 1.4v (for example) when turbo'ing to the max frequency.

Casterina · 11 Jun 2016 at 14:40

Danny75 said:
Good read that, Silent Scone.

Just to clear something up - there's no need to input an Offset value along with enabling Adaptive for voltages to drop when idle. Just enable Adaptive and enter the total Vcore in "Additional Turbo Mode CPU Core Voltage". Then you'll have an Adaptive Turbo overclock. The voltages will remain on default for every other speed (800-4000MHz) but boost to 1.4v (for example) when turbo'ing to the max frequency.

To start things off, I have put in 45x, changed CPU Core/Cache Voltage to Adaptive Mode and entered 1.350 in Additional Turbo Mode CPU Core Voltage however the CPU idles at 3.9GHz?

Danny75 · 11 Jun 2016 at 14:47

Casterina said:
To start things off, I have put in 45x, changed CPU Core/Cache Voltage to Adaptive Mode and entered 1.350 in Additional Turbo Mode CPU Core Voltage however the CPU idles at 3.9GHz?

One reason could be that it takes a minute or two after booting for frequency to scale down. If you looked at CPU-Z within that time-frame that would explain it.

Otherwise find the setting in BIOS for Enhanced Intel Speed Step and make sure it's enabled. C-State should be enabled too (Auto should be fine).

A third reason could be that Power Options is set to Maximum Performance instead of Balanced, in Windows.

Danny75 · 11 Jun 2016 at 14:59

P.S. CPU-Z is showing the max multiplier as 48 not 45.

Casterina · 11 Jun 2016 at 15:10

Danny75 said:
One reason could be that it takes a minute or two after booting for frequency to scale down. If you looked at CPU-Z within that time-frame that would explain it.

Otherwise find the setting in BIOS for Enhanced Intel Speed Step and make sure it's enabled. C-State should be enabled too (Auto should be fine).

A third reason could be that Power Options is set to Maximum Performance instead of Balanced, in Windows.

I have enabled Intel Speed Step in the BIOS as it was on Auto and now the frequency scales down to 800MHz in idle.

Danny75 said:
P.S. CPU-Z is showing the max multiplier as 48 not 45.

Yeah, I tried 4.8GHz at 1.43V and it BSOD so I'm just aiming for 4.7GHz with a stable voltage.

Also, is there any other CPU settings I need to change in the BIOS?

Danny75 · 11 Jun 2016 at 15:20

Casterina said:
I have enabled Intel Speed Step in the BIOS as it was on Auto and now the frequency scales down to 800MHz in idle.

Odd that Auto meant disabled in this case but nice it's sorted.

Casterina said:
Yeah, I tried 4.8GHz at 1.43V and it BSOD so I'm just aiming for 4.7GHz with a stable voltage.

Also, is there any other CPU settings I need to change in the BIOS?

More often than not it's all down to the Vcore. If you feel you are close to stable on 4.7GHz, but not quite, then try increasing LLC. VCCIN aka CPU Input Voltage may be another setting to play with.

Casterina · 20 Jun 2016 at 13:12

Danny75 said:
More often than not it's all down to the Vcore. If you feel you are close to stable on 4.7GHz, but not quite, then try increasing LLC. VCCIN aka CPU Input Voltage may be another setting to play with.

I've gotten a stable overclock of 4.7GHz using 1.360 VCore using adaptive voltage with Level 5 LLC however what advantages is there if I overclock the cache as well?

Danny75 · 20 Jun 2016 at 14:47

Casterina said:
I've gotten a stable overclock of 4.7GHz using 1.360 VCore using adaptive voltage with Level 5 LLC however what advantages is there if I overclock the cache as well?

That's the same Vcore I needed for 4.7 too.

Overclocking cache appears to provide minimal benefit. I've only noticed any real benefit in some benchmarks. But no harm in seeing how well your Cache clocks, just don't let it affect the CPU OC, i.e. keep that at 4.7 and stop clocking Cache when you encounter instability. Cache ratio should also not exceed CPU ratio (unlikely it would be able to anyway).