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Helpful ReplyOverclocking i7-4770K / Question

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Carbonshape
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2020/09/22 12:33:10 (permalink)
Hi,
I overclocked my 4770K from 3.5 to 4.4MHz. Furthermore, I used "CPU Voltage Mode" Adaptive, and "CPU Offset Voltage" +75mV. And that's the question, I'm not sure if the +75mV are acceptable or not for the i7. As you can imagine, I will not damage anything.
 
Here's a link for the UEFI. It's 4. - https://forums.evga.com/FindPost/2329841
 
Edit: In addition I read that the Vcore safe maximum of Haswell should not exceed 1.300.
 
 
post edited by Carbonshape - 2020/09/23 03:41:43

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kougar
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Re: Overclocking i7-4770K / Question 2020/09/22 17:21:32 (permalink) ☄ Helpfulby Carbonshape 2020/10/08 14:35:36
1.3 vCore is generally the max recommended, but most cooling solutions can't handle it anyway. +75mV should be +0.075v to whatever your board is using for the base voltage. Be aware some motherboards auto-overvolt so it's best to know what the final vcore number is.
 
Be sure you're stress testing your overclocks, Haswell needs voltage to get up to 4.4 and stay stable. 


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Carbonshape
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Re: Overclocking i7-4770K / Question 2020/09/23 03:40:50 (permalink)
kougar
1.3 vCore is generally the max recommended, but most cooling solutions can't handle it anyway. +75mV should be +0.075v to whatever your board is using for the base voltage. Be aware some motherboards auto-overvolt so it's best to know what the final vcore number is.
 
Be sure you're stress testing your overclocks, Haswell needs voltage to get up to 4.4 and stay stable. 


 
Thank you!
 
Some also say 1.35 vCore but I also think the less the better. However I can't make screenshots of the UEFI from my Classified. If I go to 4.4MHz, the voltage of the bios (topside, left) shows 1.231V. The +75mV are additional? If so, that would make 1.306V. Or are they already in the 1.231V implemented?

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kougar
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Re: Overclocking i7-4770K / Question 2020/09/23 22:46:36 (permalink) ☄ Helpfulby Carbonshape 2020/10/08 14:36:19
I'd suggest you download Core temp The VID will be the total vCore your chip is getting. It will show the current frequency, any thermal throttling, and temps. Unless you're using water or a huge air cooler it's unlikely you can use anything over 1.3v without the CPU thermal throttling and downclocking itself. My 4790K chip is watercooled, and at 4.5Ghz even 1.30v gets it so hot so it throttles under AVX2 workloads. I keep mine around 1.26v. 


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Carbonshape
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Re: Overclocking i7-4770K / Question 2020/09/24 01:05:31 (permalink)
4.5 is a different story!
 

 
I'm okay with 4.4... Thanks for your advice with the monitoring. 
 
 

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Ogredose
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Re: Overclocking i7-4770K / Question 2020/09/25 13:16:01 (permalink)
I had the same question, I'm glad I came across this.
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advancedlamb
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Re: Overclocking i7-4770K / Question 2020/09/25 13:29:47 (permalink)
dang, surprised you can get such an overclock, my 4790k can barely even go up .1GHZ before it will crash forever

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Re: Overclocking i7-4770K / Question 2020/09/25 16:37:27 (permalink)
advancedlamb
dang, surprised you can get such an overclock, my 4790k can barely even go up .1GHZ before it will crash forever




Probably memory or uncore settings too tight. Best to leave the uncore at 4Ghz when testing how far a Haswell chip will OC.


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