Overclocking question 5820k

[Excal13]

Hi,

 

Recently purchased a 5820K and copied a video tutorial on Youtube for overclocking but I have a few questions.

Below are the settings I have done to obtain my 4.5 GHz on my 5820K with my MSI X99 SLI Plus

 

Cooler: Corsair H100i GTX

 

CPU Ratio: 45  (Original 33)

Base Clock: 100  (Original 100)

VCCIN Voltage: 2.1 (Original 2.0)

CPU Core Voltage: 1.3 (Original AUTO)

 

1) What is the difference between VCCIN and CPU Core Voltage?

2) Under AIDA64 Stress test my TEMP is stable at 80°C, but I would like the temp to be around 70 - 75 MAX, do I start decreasing the CPU Core Voltage or VCCIN to see if I can maintain my 4.5 GHz with lower voltage?

 

Thanks,

Excal

[Excal13]

anyone?

[i_build_nanosuits]

1) What is the difference between VCCIN and CPU Core Voltage?

2) do I start decreasing the CPU Core Voltage or VCCIN to see if I can maintain my 4.5 GHz with lower voltage?

 

Thanks,

Excal

1- The Key Lesson: VCCIN = +0.4 VCore

Intel defines the VCCIN specification (called the ‘Eventual CPU input voltage’) in relation to CPU Vcore as follows:

Less than 0.4V – not recommended. Instability is almost guaranteed

0.4V – ideal value

0.4-0.6V – general ‘OK’ range

Above 0.6V – not recommend as long-term damage can occur

Generally speaking, higher VCCIN can cause a higher CPU temperature

2- Yes, lower both and test, lower again, test...when you reach instability up one notch on both.

[blueballs]

sorry I missed your thread,degrese the cpu core voltage or try for the 4.6 (46) first

[runit3]

Hi,

 

Recently purchased a 5820K and copied a video tutorial on Youtube for overclocking but I have a few questions.

Below are the settings I have done to obtain my 4.5 GHz on my 5820K with my MSI X99 SLI Plus

 

Cooler: Corsair H100i GTX

 

CPU Ratio: 45  (Original 33)

Base Clock: 100  (Original 100)

VCCIN Voltage: 2.1 (Original 2.0)

CPU Core Voltage: 1.3 (Original AUTO)

 

1) What is the difference between VCCIN and CPU Core Voltage?

2) Under AIDA64 Stress test my TEMP is stable at 80°C, but I would like the temp to be around 70 - 75 MAX, do I start decreasing the CPU Core Voltage or VCCIN to see if I can maintain my 4.5 GHz with lower voltage?

 

Thanks,

Excal

1) @i_build_nanosuits explained it well

 

2) Core voltage will have a much greater effect on temps than VCCIN. That being said, 2.0v is a tad high for what you're trying to do. 1.875-1.9v should be sufficient. After you knock the VCCIN down and test, start decreasing the vcore stepwise by .01-.02v. Also worth noting that AIDA is going to peg your CPU at a higher temp than any real world scenario, you'll probably sit ~65C gaming and ~75C rendering/encoding, which are both perfectly acceptable temps for the respective tasks.