Question about Digi+

[Luumi]

So, I managed to find a nice spot for my CPU at 4.7Ghz with 1.365V, since 4.8Ghz already requires 1.410V to work properly. But, I noticed that since I left most of the options in Digi+ to Auto and noticed it sets things like CPU current capability to 180% and cpu power phase control to Extreme, so I'd like to know are those high settings required or could they be bad for the system?

Here are my voltage settings:

3930k @ 4.7Ghz with 1.365V
LLC high
CPUVTT 1.15V
VCCSA 1.15V
CPU PLL 1.8V
DRAM obviously 1.65V

[HiVizMan]

Hello

You have grasped a very important concept with your voltage selection for 24/7, any large increase that is not proportional is not worth doing for an extra 100MHz. Good work there mate.

Now your question, you have the basics in place. The Auto function is good as a starting point, a jump off point. Now if you want you can start lowering those settings that are dialled in on Auto until you reach that point of instability and adjust accordingly. I personally do think that extreme is a touch to high for 24/7 as is 180% but since you have such good air cooling and as a result your airflow over the key areas on your VRM's is good it will not negatively impact hugely.

But yes ideally you want to use the least amount of voltage across the settings as possible and still remain stable.

[Luumi]

I easily managed to run my cpu on aida64 stress test with 140% cpu current capability, which must be enough for my overclock. I don't know if it makes a big difference though.

[HiVizMan]

cpu power phase control to Extreme

Here is where you will notice difference in temperatures.

[Luumi]

Dunno mate, 140% requires that setting and I don't know how low I can go and should I use the standard or optimized option instead of the extreme one. I've set the vcore manually so I'm not using offset.

[HiVizMan]

I would personally be much happier if I did not have my 24/7 settings on extreme. I think you have quite a bit of downward movement with those settings yet. Or does your system become unstable if you change to lower than 140%?

[Luumi]

I managed to run with 120% with optimized power phase control so far. How much does it affect my VRM temps comapred to Auto settings if you have any idea. And is there any important difference between standard and optimized power phase setting?

[HiVizMan]

VCore Load-Line Calibration: Sets a margin between idle and full processor load voltage to compensate for overshoot. To clarify; overshoot is a short duration voltage excursion beyond applied processor VID. We recommend a setting of Medium for most overclocking.

Here is the most important setting for me and my personal crusade against excessive heat in CPU's - I would even go as far as saying that low or none is good here, simply because the vDroop this is meant to correct is a design feature in the Intel Processor and does much good in ensuring longevity of a CPU. Lower also equals less heat.

CPU Current Capability: Increases the power threshold before over-current protection limits power (either by shut-off or throttling). A setting of 180% is ample for all types of overclocking.

Please remember that the 180% mentioned here and the overclocking that is mentioned here is to a large part aimed at the extreme LN2 user.

PU Voltage Frequency: Sets the switching frequency of the power FETs supplying processor Vcore. Lower switching frequencies lead to a higher VRM efficiency (small power saving) and lower VRM operating temperatures. Setting a higher switching frequency aids transient response (the recovery of voltage to the applied level after a load condition) – at the expense of heat.

This last is just for your information but it is relevant as it shows the relationships of the different processes.

[Luumi]

I'm trying to run with regular LLC, but would you recommend using offset mode instead of manual vcore?

EDIT: lol wow I managed to run stable with regular LLC and the voltage drops to 1.312 or even 1.304V under load with 4.7ghz and average temperature being 60. Seems that my cpu really loves this clock setting :p, eventhough I'm sure this will eventually crash soon.

[HiVizMan]

Ah I love it when a plan comes together.

This tweaking of CPU's and motherboards can be real fun sometimes. Enjoy mate 🙂