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is 1.3v alot for a i7 4770k at 4.3 ghz

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  • Intel i7
  • CPUs
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April 21, 2014 9:12:13 AM

I just overclocked my asus z87 rog maximus vi hero and i7 4770k to 4.3 ghz. when I overclocked I had xmp enabled with my rams default speed at ddr3 2400. I had to use 1.3v to get my cpu stable. I ran prime95 100% load test for 4 hours. on the hottest core my max temperature was 84c my minimum temperature was 75c and my average temperatures was 77c to 81c my cpu only hit 84c one time. did I have to use to much voltage to get my cpu stable ? did having xmp enabled with my ram speed set to ddr3 2400 cause me to need more voltage ? and are my temperatures ok ? my cpu cooler is a corsair h100i

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April 21, 2014 9:17:05 AM

It seems a bit high, I have my i7 at 4.4Ghz with 1.25 volts and prime95 max temp is right around 75c with a NH-D14 cooler (I think the h100i should be a few degrees cooler than the NH-14D). I don't think the volts needed for ram will change the volts needed for the CPU...
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April 21, 2014 9:51:45 AM

That's the max recommended on Tom's "Intel Temperature Guide:" http://www.tomshardware.com/forum/id-1800828/intel-temp...

Do you have Load Line Calibration set to at least 150%? There are other settings that will help you get the Vcore down a little.
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April 21, 2014 9:59:50 AM

when I stress tested my cpu at 1.25 volts my max temp was 76c 77c but my cpu crashed after 15 minutes of stress testing . what motherboard do you have ? and what thermal paste did you use ?
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April 21, 2014 10:02:15 AM

i have the asus z87-pro, i used the thermal paste that came with the nh-14d.
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April 21, 2014 10:03:46 AM

Eggz said:
That's the max recommended on Tom's "Intel Temperature Guide:" http://www.tomshardware.com/forum/id-1800828/intel-temp...

Do you have Load Line Calibration set to at least 150%? There are other settings that will help you get the Vcore down a little.

that is the setting in the power management section rite ? I think I set it to 120% I have to check though
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April 21, 2014 10:09:11 AM

Derza10 said:
It seems a bit high, I have my i7 at 4.4Ghz with 1.25 volts and prime95 max temp is right around 75c with a NH-D14 cooler (I think the h100i should be a few degrees cooler than the NH-14D). I don't think the volts needed for ram will change the volts needed for the CPU...
when I set my voltage to 1.25v my max temp was 76c 77c but my cpu crashed after 15 minutes . I was able to get my cpu stable at 1.28v but my cpu crashed after 1 hour . how long did you stress test your cpu for ? what motherboard do you have ? and what thermal paste did you use ?

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April 21, 2014 10:50:10 AM

orndorf said:
when I stress tested my cpu at 1.25 volts my max temp was 76c 77c but my cpu crashed after 15 minutes of stress testing . what motherboard do you have ? and what thermal paste did you use ?


I'm on a different chipset, which is all in my signature below. There are still common features for OCing, though. The setting might be called different things, but the first one is to prevent the CPU and PCI from interfering with wireless signals. Turn that off for stability. It allows your processor signals to fluctuate without restraint. The other one allows Vcore variation so it will decrease at idle and increase under load.

[EDIT] Just realized you see rent asking me. Don't know why the quote didn't show up for me to see?
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April 21, 2014 11:43:17 AM

orndorf said:
Derza10 said:
It seems a bit high, I have my i7 at 4.4Ghz with 1.25 volts and prime95 max temp is right around 75c with a NH-D14 cooler (I think the h100i should be a few degrees cooler than the NH-14D). I don't think the volts needed for ram will change the volts needed for the CPU...
when I set my voltage to 1.25v my max temp was 76c 77c but my cpu crashed after 15 minutes . I was able to get my cpu stable at 1.28v but my cpu crashed after 1 hour . how long did you stress test your cpu for ? what motherboard do you have ? and what thermal paste did you use ?



Asus z87-pro, used thermal paste that came with the nh-14d... as for the stress test I ran it for about an hour @4.5 with no issues, I then clocked it to 4.4 for everyday use and ran it for like 20 mins, just left it at 4.4ghz its been fine for 4 months now.

I also tried running it at 1.3v @4.6 but i get crashes, I'm happy with mine at 1.25v and 4.4ghz. Every chip is different its the luck of the draw on what you get... I've seen people running them at 1.2v @4.7Ghz.

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October 12, 2014 12:36:02 PM

Derza10 said:
It seems a bit high, I have my i7 at 4.4Ghz with 1.25 volts and prime95 max temp is right around 75c with a NH-D14 cooler (I think the h100i should be a few degrees cooler than the NH-14D). I don't think the volts needed for ram will change the volts needed for the CPU...


Derza10 said:
orndorf said:
Derza10 said:
It seems a bit high, I have my i7 at 4.4Ghz with 1.25 volts and prime95 max temp is right around 75c with a NH-D14 cooler (I think the h100i should be a few degrees cooler than the NH-14D). I don't think the volts needed for ram will change the volts needed for the CPU...
when I set my voltage to 1.25v my max temp was 76c 77c but my cpu crashed after 15 minutes . I was able to get my cpu stable at 1.28v but my cpu crashed after 1 hour . how long did you stress test your cpu for ? what motherboard do you have ? and what thermal paste did you use ?



Asus z87-pro, used thermal paste that came with the nh-14d... as for the stress test I ran it for about an hour @4.5 with no issues, I then clocked it to 4.4 for everyday use and ran it for like 20 mins, just left it at 4.4ghz its been fine for 4 months now.

I also tried running it at 1.3v @4.6 but i get crashes, I'm happy with mine at 1.25v and 4.4ghz. Every chip is different its the luck of the draw on what you get... I've seen people running them at 1.2v @4.7Ghz.



What's your Input Voltage when you were able to get 4.4ghz @ 1.25Vcore?

Does changing my cooler will have major impact on the voltage settings? I'm currently using 212 EVO
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