what manual voltage to set my i7 4790 at?

[Arronleeds]

being doing prime95s and aida64s and ive been told if you don't set the voltage manually that it can pull more voltage than needed, thus giving higher temps. my i7 4790 is at stock since i couldnt get it to 4.2ghz because of only being able to tweak the base clock.

whats the best way to find out how much voltage is needed.

 

[DeathRabit]

You need solid PSU this is now in discount very good brand http://pcpartpicker.com/part/enermax-power-supply-etl650awtm

 

[Arronleeds]

my psu is better than that, mines a 750 watt silver rated from sparkle-power inc.

not asking about psu im asking about what voltage i need to set my cpu at.

 

[barto]

So you're trying to overclock a 4790 not a 4790k? If I'm not mistaken the max frequency you can get on a non k is max turbo frequency and you shouldn't have to change the Vcore to do that.

So with overclocking, every chip is different. Your chip may require more voltage or less than others. The pro's at AnandTech had 4.2 with a Vcore of 1.125V. Did you read a Overclocking Guide?

http://www.anandtech.com/show/8227/devils-canyon-review-intel-core-i7-4790k-and-i5-4690k/2

 

[MarkW]

Do not mess with the voltages on a CPU unless you know what you are doing. Its simply not needed.

 

[Arronleeds]

no i meant that my cpu on stock was using 1.2v on auto on prime95, ive put it to manual at 1.025v and ive lost 10-12 degrees on prime95 which is insane.

on auto my cpu was idling at 0.713v so jumping from that to 1.2v was a bit big wasnt it, its stable at 1.025v with a lot better temps.

 

[MarkW]

Do not mess with the voltages on a CPU unless you know what you are doing. Its simply not needed.

Do not mess with the voltages on a CPU unless you know what you are doing. Its simply not needed.

Do not mess with the voltages on a CPU unless you know what you are doing. Its simply not needed.

Do not mess with the voltages on a CPU unless you know what you are doing. Its simply not needed.

 

[barto]

So do you have a 4790 or a 4790k? Did you read an overclocking guide?

As for auto Vcore, it will ramp up the Vcore higher than what's typically required. Do you have an aftermarket cooler?

 

[Arronleeds]

4790 and yes i have the cryorig r1 ultimate but the temps werent good in my eyes, ive seen on numerous forums to set the voltage accordingly especially with non k cpus as it just overvolts.

 

[barto]

What were your temps? Prime95 is going to stress the CPU far higher than an average program.

Personally I don't think what you're doing is necessary but for 4.0 the voltage really shouldn't be very high. AnandTech achieved 4.0 with a Vcore of 1.050.
http://www.anandtech.com/show/8227/devils-canyon-review-intel-core-i7-4790k-and-i5-4690k/2

 

[Arronleeds]

prime 95 temps on auto were mid 60s to low 70s, with it set to manual at 1.025v its in the mid to high 50s, thats a big difference.

 

[barto]

Yes Prime95 is designed to stress the CPU. Very few programs may even come close to those temps.

 

[Arronleeds]

got my gaming temps to be about 6-8 degrees lower by setting voltage too.

mostly 39 over all 3 cores.

 

[LookItsRain]

You may have lowered temps but im willing to bet you will run into stability issues, stock voltage on a 4790 non k is fine and the temps will be fine.

 

[Arronleeds]

how is 1.2v fine on a non k cpu at 4ghz..... people can get an i5 4690k to 4.2ghz at that voltage.

i think theres a big difference between 70c and mid 50s on an r1 ultimate.

the r1 ultimate is supposed to be one of the best air coolers and 70c on prime95 is shocking for such a big cooler.

watch this video https://www.youtube.com/watch?v=UMl7iEzpzsA


thats on an overclocked 4770k and his temps are better than mine with the noctua h-d15 than my temps are with a stock 4790 on auto voltage with the side panel off.

 

[LookItsRain]

how is 1.2v fine on a non k cpu at 4ghz..... people can get an i5 4690k to 4.2ghz at that voltage.

i think theres a big difference between 70c and mid 50s on an r1 ultimate.

the r1 ultimate is supposed to be one of the best air coolers and 70c on prime95 is shocking for such a big cooler.

watch this video https://www.youtube.com/watch?v=UMl7iEzpzsA


thats on an overclocked 4770k and his temps are better than mine with the noctua h-d15 than my temps are with a stock 4790 on auto voltage with the side panel off.

The difference between 70c and 55c is just a number that you see on your monitor, nothing positive will occur from reducing the temps from 70...70 is perfectly fine for a prime 95 run. Like i said in a previous post, in a few days, stability issues may or may not arise from your voltage change.

 

[Arronleeds]

The matter of the fact is I bought a "better" cooler to decrease my temps, before I had an h55 and it was crap, if I ever want to overclock my next cpu I don't want it getting high temps do I with a cooler that's supposed to be one of the best.