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Suggested 4790k Voltage at 4.7 ghz

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post #21 of 30 (permalink) Old 02-19-2019, 12:12 AM - Thread Starter
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Quote: Originally Posted by jordan1794 View Post
I'm not the user you responded to, but I'd like to chime in - the thermal response of these chips are also absolutely bonkers in difference from chip to chip.


I'm running an AIO water cooler, and when I do 4.9 @ 1.325v I'll hit 82 C on my hottest core. I (think) I've attached a photo of my results of the lowest stable frequency/voltage combinations.
The interesting thing to note is that my girlfriend's rig has the same CPU, cooler, case, everything (except GPU) - but her 4790k starts hitting 80+ C when she runs 4.6 @ 1.225.


Both of our chips are stock - no delidding. Makes me wonder what my chip could do delidded...I'm pretty sure my instability above 4.9 is due to temeprature. Chip may eek out a 5.0 on all 8 threads, or 5.1 with HT off.
Alas, I'm not brave enough to delid...yet. Just got a promotion at work though so my bravery may increase when I have more money lol.
Yeah, man! The voltage is all over the place from chip to chip. I saw people hitting 4.9 on 1.3 volts...so yeah...it's weird

I am scalping mine this week, here is some info if you would like some info and parts I bought myself after doing extensive research from Youtube to forums here and there

https://www.overclock.net/forum/5-in...ive-paste.html
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post #22 of 30 (permalink) Old 02-20-2019, 01:44 PM - Thread Starter
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Went back to 1.26 volts on air, and it's stable after running in Aida64 with Geminii S524 cooler (thermally and stability wise)

Looking forward to delidding, it will give a nice temp drop. I am not even sure I will go back to water now. Because temps look phenomenal for my set up

Never thought I will be debating between air and water again. I have H115i Pro coming in mail from Corsair, but now I don't know if I need it.

Going to check the sound of that pump, and see if it's silent, with no buzzing like H105/H100i

I can make this computer completely silent now, as I have fan controllers on the back of the case to reduce sound completely. I can hear my refrigerator more in the kitchen from my room, than PC in my room.
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post #23 of 30 (permalink) Old 04-03-2019, 12:09 PM
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Quote: Originally Posted by XLifted View Post
Went back to 1.26 volts on air, and it's stable after running in Aida64 with Geminii S524 cooler (thermally and stability wise)

Looking forward to delidding, it will give a nice temp drop. I am not even sure I will go back to water now. Because temps look phenomenal for my set up

Never thought I will be debating between air and water again. I have H115i Pro coming in mail from Corsair, but now I don't know if I need it.

Going to check the sound of that pump, and see if it's silent, with no buzzing like H105/H100i

I can make this computer completely silent now, as I have fan controllers on the back of the case to reduce sound completely. I can hear my refrigerator more in the kitchen from my room, than PC in my room.

Interesting, what is your clock speed at 1.26 volts?


I have a vintage Noctua NH-D14, and I'm close to 84c on my hottest core when running Prime95 at 1.240v 4.6GHz. Is kind of hot these days around here though.
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post #24 of 30 (permalink) Old 04-04-2019, 03:05 AM - Thread Starter
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Quote: Originally Posted by Avan7 View Post
Interesting, what is your clock speed at 1.26 volts?


I have a vintage Noctua NH-D14, and I'm close to 84c on my hottest core when running Prime95 at 1.240v 4.6GHz. Is kind of hot these days around here though.
I had mine at 4.7, before I sold my CPU

1.24 and 84 celcius? Your case must NOT be well ventilated, that's rather high, especially with NH-D14, I had Geminii S524 on my CPU and it's supposed to be 1.5 steps down from NH-D14.

Strange.
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post #25 of 30 (permalink) Old 04-04-2019, 03:23 AM
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post #26 of 30 (permalink) Old 04-04-2019, 12:57 PM - Thread Starter
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post #27 of 30 (permalink) Old 04-04-2019, 11:00 PM
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Quote: Originally Posted by XLifted View Post
I had mine at 4.7, before I sold my CPU

1.24 and 84 celcius? Your case must NOT be well ventilated, that's rather high, especially with NH-D14, I had Geminii S524 on my CPU and it's supposed to be 1.5 steps down from NH-D14.

Strange.
That's actually not uncommon for a stock chip. Before I delidded mine I couldn't use more than 1.25v or one core would be in the high 90s under load. That one core would be about 15c higher than the others, as time goes on the factory TIM tends to get worse.

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post #28 of 30 (permalink) Old 04-05-2019, 01:09 AM - Thread Starter
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Quote: Originally Posted by white owl View Post
That's actually not uncommon for a stock chip. Before I delidded mine I couldn't use more than 1.25v or one core would be in the high 90s under load. That one core would be about 15c higher than the others, as time goes on the factory TIM tends to get worse.

I realize how blessed I am, and was with those CPU chips even. I had mine running at 1.225 at 4.7 for a 2 years, then when I ran prime 95 I realized I wasn't fully stable, and even at that I wasn't at that high temp category, but I delided right after. The chip is in right hands now, with copper plate on it, and liquid metal.

Someone else is happy, and I am happy for them.

I am returning i7 9700k that can't even stay stable at 1.3v at 4.7 ghz, now that's an opposite side of the spectrum. It needs around 1.32-1.35v for 4.7....imagine that!
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post #29 of 30 (permalink) Old 04-05-2019, 02:23 AM
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Vcore 1.352v/1.325v with default vdroop for stability and if your lazy You can go lower as OP's suggested
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post #30 of 30 (permalink) Old 05-06-2019, 07:42 PM
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Quote: Originally Posted by white owl View Post
That's actually not uncommon for a stock chip. Before I delidded mine I couldn't use more than 1.25v or one core would be in the high 90s under load. That one core would be about 15c higher than the others, as time goes on the factory TIM tends to get worse.
Oh right! Well I might eventually delid my CPU, thing is... I get distracted sometimes. When I was first building my PC I somehow managed to insert the 12V cable into the motherboard in the wrong way... Good thing nothing fried up! Afterwards I updgraded my motherboard and I inserted the I/O shield in the wrong way... Had to remove everything and start a new.

It has been fun though! And I have learned a lot, thank God I haven't broke anything. I have heard of delidding kits so yeah, a 10-15c temperature drop would be worth it.

As for the OP, I think you had a very good chip!
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