Undervolting CPU

[spree]

Hi there!

 

So I was just wondering if I am suppose to touch the CPU vcore or the offset thingy? In order to undervolt my CPU. I have seen mixed answers on google, some say touch your vcore and some say only the offset one to a minus value.

 

It seems I cannot touch both of them, since I need to put the cpu vcore to "normal" (aka not a value) in order to be able to touch the offset one.

 

Specs:

 

I7 7700k

 

Gigabyte Gaming K3 Z270

 

Oh and when you run prime95 and it gives you 1 error does it mean undervolt was not succesful?

[Psittac]

Don't do it, you'll burst into fire

 

edit: why undervolt? will only save power.  Degredation is met on the motherboard mostly edit: short of high voltages on the chip.  I would look up several video's on overclocking.  There are several wham bam thank you mam video's on overclocking the 7700k.  If you get into the nitty gritty then you can tweak until the cow's come home.  undervolting is typically a tool to find what the lowest voltage your chip will do at a certain clock so you are that more informed when pushing the clocks higher

[Jurrunio]

Use offset. It allows the mobo to reduce the voltage at idle even further but manual voltage doesnt. Also keep C-states and EIST turned on.

1 minute ago, Psittac said:

Don't do it, you'll burst into fire

ha

[spree]

8 minutes ago, Jurrunio said:

Use offset. It allows the mobo to reduce the voltage at idle even further but manual voltage doesnt. Also keep C-states and EIST turned on.

ha

Where do I find this "C-states" and EIST? I'm undervolting using BIOS. 

[spree]

11 minutes ago, Psittac said:

Don't do it, you'll burst into fire

 

edit: why undervolt? will only save power.  Degredation is met on the motherboard mostly edit: short of high voltages on the chip.  I would look up several video's on overclocking.  There are several wham bam thank you mam video's on overclocking the 7700k.  If you get into the nitty gritty then you can tweak until the cow's come home.  undervolting is typically a tool to find what the lowest voltage your chip will do at a certain clock so you are that more informed when pushing the clocks higher

To reduce temperatures.

[Psittac]

4 minutes ago, spree said:

To reduce temperatures.

unless you are 90+c you shouldn't worry, and that's at the extreme.  70-80c is perfectly functional.  A stock 7700k under the most modest of cooling should be completely fine under stock settings.  But if you get a kick out of undervolting and find peace in cooler temps, then by all means pursue the challenge

 

edit: I'm old school when it comes to clocking and prefer manual voltage.  However offset with no changes will produce lower temps than a low manual voltage.  I would start tinkering with offset voltage and do a little bit at a time followed with stress testing.  That is the only way to know if a clock is stable, is to test.  Over all if you are worried about wear on the cpu....... well I would just leave it stock as the chips are binned to run stock.  If a number on the core is your concern then you can look into load line calibration which deals with how the voltage falls off under heavy load, a higher number keeps the voltage solid, a lower number lets it sag.  Just remember these processors are designed to crunch numbers with excess and for a long time.  I have never had a cpu die or degrade before it became obsolete, and if you want to get technical I have been doing this for over 20 years, far before changing settings in BIOS.

[spree]

34 minutes ago, Psittac said:

unless you are 90+c you shouldn't worry, and that's at the extreme.  70-80c is perfectly functional.  A stock 7700k under the most modest of cooling should be completely fine under stock settings.  But if you get a kick out of undervolting and find peace in cooler temps, then by all means pursue the challenge

 

edit: I'm old school when it comes to clocking and prefer manual voltage.  However offset with no changes will produce lower temps than a low manual voltage.  I would start tinkering with offset voltage and do a little bit at a time followed with stress testing.  That is the only way to know if a clock is stable, is to test.  Over all if you are worried about wear on the cpu....... well I would just leave it stock as the chips are binned to run stock.  If a number on the core is your concern then you can look into load line calibration which deals with how the voltage falls off under heavy load, a higher number keeps the voltage solid, a lower number lets it sag.  Just remember these processors are designed to crunch numbers with excess and for a long time.  I have never had a cpu die or degrade before it became obsolete, and if you want to get technical I have been doing this for over 20 years, far before changing settings in BIOS.

Alright thanks! I will do some testing with the offset now! Trial and error!

[Jurrunio]

2 hours ago, spree said:

Where do I find this "C-states" and EIST? I'm undervolting using BIOS. 

Same page as CPU clock multiplier, but if you havent touched them then they should be enabled by default.

[spree]

16 hours ago, Jurrunio said:

Same page as CPU clock multiplier, but if you havent touched them then they should be enabled by default.

They are both on auto. Should I enable them or leave them at auto?

[Jurrunio]

1 hour ago, spree said:

They are both on auto. Should I enable them or leave them at auto?

Yeah, leave them as is

[Coaxialgamer]

Use offsets