I can't boot at 5.0 GHz

[The Chicagoan]

So my intel i7 4790K was able to get to 4.9 GHz at 1.40 volts and it booted into windows. I was even able to get into games without it bluescreening.. But when I try 5.0 GHz at 1.41 volts it doesn't boot, it freezes then blue screens. So I tried 1.42 did the same thing, I tried 1.43 did the same thing... I tried 1.44 it also did the same thing I went all the way up to 1.46 volts and it did the same thing. Why exactly can I not at least boot into windows at all? Every single time it just froze when loading into Windows...

Is there anything I can do to increase or make my overclock stable?

motherboard: Asus Maximus Formula VI

[Cloudy]

I use an Asus Maximus X Hero so some of these settings have a small chance of not being in your BIOS but try these things.

Set CPU Core Voltage to 1.350V, if all fails after setting everything below then work your way up to 1.400V, but I don't suggest going above 1.420V personally.

Try setting the 'Max CPU Cache Ratio' to 42

Enable 'Xtreme Tweaking', disable 'CPU SVID Support', and disable 'BCLK Aware Adaptive Voltage'

Set the 'CPU Load-Line Calibration' to Level 6 (Likely in >Extreme Tweaker\External Digi+ Power Control)

Disable 'ASUS MultiCore Enhancement' and set 'AVX Instruction Core Ratio Negative Offset' to 3 (Probably in Extreme Tweaker)

WARNING doing anything below this:

Stops motherboard from throttling CPU but WILL overheat without propper cooling.

Max 'Long Duration Package Power Limit' and 'Short Duration Package Power Limit' by entering '55555' for both, on the Maximus X Hero the cap is '4095' (Likely in >Extreme Tweaker\Internal CPU Power Managment)

Do the same for 'CPU Core/Cache Current Limit Max.', my cap is 255.50


I still doubt this OC settings will work for you since you are using an i7 4790K and I only know 100% that it works for an i7 8700K. The thermal design power for the the 4790K is 88 Watts VS the 8700K being 95 Watts. Plus a lithography of 22 nm instead of 14nm. Intel says the 4790K max turbo frequency is 4.4GHz so I don't think it would easy/possible to get a stable 5.0GHz. Still, if you can more power to you!
Good luck, set fan speeds high and STOP CPU Load if you are going over 95ºC

[Malygos]

Your most likely gonna need to go higher in voltage and its not worth it for an extra 2% performance my 7700k can do 5ghz at 1.31v but has to do 4.9 at 1.3v just the nature of the beast.

[TehSpoopyKitteh]

Use the default voltage. Dial the speed down to 4.4GHz or at most 4.5GHz.

[The Chicagoan]

引用自 Cloudy Canadian：

I use an Asus Maximus X Hero so some of these settings have a small chance of not being in your BIOS but try these things.

Set CPU Core Voltage to 1.350V, if all fails after setting everything below then work your way up to 1.400V, but I don't suggest going above 1.420V personally.

Try setting the 'Max CPU Cache Ratio' to 42

Enable 'Xtreme Tweaking', disable 'CPU SVID Support', and disable 'BCLK Aware Adaptive Voltage'

Set the 'CPU Load-Line Calibration' to Level 6 (Likely in >Extreme Tweaker\External Digi+ Power Control)

Disable 'ASUS MultiCore Enhancement' and set 'AVX Instruction Core Ratio Negative Offset' to 3 (Probably in Extreme Tweaker)

WARNING doing anything below this:

Stops motherboard from throttling CPU but WILL overheat without propper cooling.

Max 'Long Duration Package Power Limit' and 'Short Duration Package Power Limit' by entering '55555' for both, on the Maximus X Hero the cap is '4095' (Likely in >Extreme Tweaker\Internal CPU Power Managment)

Do the same for 'CPU Core/Cache Current Limit Max.', my cap is 255.50

Good luck, set fan speeds high and STOP CPU Load if you are going over 95ºC

k so I give up, I feel the only way it will boot is if I go to 1.5 volts but that's very dangerous for a Haswell cpu.

[Revelene]

It's all about the silicon lotto.

Are you even properly testing your overclocks? Just booting into Windows, or even playing a game, does not mean it is stable.

[The Chicagoan]

引用自 Revelene：

It's all about the silicon lotto.

Are you even properly testing your overclocks? Just booting into Windows, or even playing a game, does not mean it is stable.

I test my main overclock which was 4.6 GHz. I used many benchmarks, like prime and cinebench and a few other ones. I'm just trying to boot at 5GHz

[Revelene]

引用自 The Chicagoan：

引用自 Revelene：

It's all about the silicon lotto.

Are you even properly testing your overclocks? Just booting into Windows, or even playing a game, does not mean it is stable.

I test my main overclock which was 4.6 GHz. I used many benchmarks, like prime and cinebench and a few other ones. I'm just trying to boot at 5GHz

Probably not voltage limited. You've probably just ran into a hard frequency limit. Nothing you can really do. Chalk it up to the luck of the silicon lotto.

Why do you want to boot with 5ghz? It will most likely never be stable, considering that voltage does not affect it, so what is the point?

You can try 5ghz on core 0, maybe on core 1 as well, and the rest 4.8ghz or less. If you can get at least one or two cores running higher, it will help with most games, since most games still push the most important calls on the first couple of cores.

[The Chicagoan]

引用自 Revelene：

引用自 The Chicagoan：

I test my main overclock which was 4.6 GHz. I used many benchmarks, like prime and cinebench and a few other ones. I'm just trying to boot at 5GHz

Probably not voltage limited. You've probably just ran into a hard frequency limit. Nothing you can really do. Chalk it up to the luck of the silicon lotto.

Why do you want to boot with 5ghz? It will most likely never be stable, considering that voltage does not affect it, so what is the point?

You can try 5ghz on core 0, maybe on core 1 as well, and the rest 4.8ghz or less. If you can get at least one or two cores running higher, it will help with most games, since most games still push the most important calls on the first couple of cores.

I'm not going to use the 5GHz for like an everyday clock. I just always wanted to boot a PC at 5.0 GHz. It's just a dream that's all. My main clock would range from 4.6 GHz to at most 4.8.

[Revelene]

引用自 The Chicagoan：

引用自 Revelene：

Probably not voltage limited. You've probably just ran into a hard frequency limit. Nothing you can really do. Chalk it up to the luck of the silicon lotto.

Why do you want to boot with 5ghz? It will most likely never be stable, considering that voltage does not affect it, so what is the point?

You can try 5ghz on core 0, maybe on core 1 as well, and the rest 4.8ghz or less. If you can get at least one or two cores running higher, it will help with most games, since most games still push the most important calls on the first couple of cores.

I'm not going to use the 5GHz for like an everyday clock. I just always wanted to boot a PC at 5.0 GHz. It's just a dream that's all. My main clock would range from 4.6 GHz to at most 4.8.

5ghz on all cores with the 4790K is winning the silicon lotto jackpot.

The only advice I can give is that you try with only a core or two. Other than that, it more than likely ain't gonna happen.

[The Chicagoan]

引用自 Revelene：

引用自 The Chicagoan：

I'm not going to use the 5GHz for like an everyday clock. I just always wanted to boot a PC at 5.0 GHz. It's just a dream that's all. My main clock would range from 4.6 GHz to at most 4.8.

5ghz on all cores with the 4790K is winning the silicon lotto jackpot.

The only advice I can give is that you try with only a core or two. Other than that, it more than likely ain't gonna happen.

yeah that's what I was thinking. I'll probably set one of the cores to 5.0 GHz and have the other 3 set to it's turbo 4.4 GHz.

I was able to get the computer to boot at 5.0 GHz until I typed my password into the lockscreen, it froze, then bluescreened. I kept raising the voltage hoping I can actually get into the desktop but nope. I went to 1.55 volts. Luckily I didn't damage my CPU, seems that my CPU is still performing in the 99 percentile in userbenchmark which is great. I had to grab a huge fan in order to keep my computer from overheating when booting. Kept my temps at 95 idle at 1.45 volts lol.

http://www.userbenchmark.com/UserRun/10625235

[Cloudy]

引用自 The Chicagoan：

I was able to get the computer to boot at 5.0 GHz until I typed my password into the lockscreen, it froze, then bluescreened. I kept raising the voltage hoping I can actually get into the desktop but nope. I went to 1.55 volts. Luckily I didn't damage my CPU, seems that my CPU is still performing in the 99 percentile in userbenchmark which is great. I had to grab a huge fan in order to keep my computer from overheating when booting. Kept my temps at 95 idle at 1.45 volts lol.

http://www.userbenchmark.com/UserRun/10625235

Careful dude, you can permanently damage your CPU doing that kind of thing. To say you were successful getting OCing to 5.0GHz becuase of getting into logging in is a stretch but if that was your goal I suppose you achieved it. Even 4.6GHz stable is something to be glad about with that CPU. :)

[TehSpoopyKitteh]

引用自 Revelene：

引用自 The Chicagoan：

I'm not going to use the 5GHz for like an everyday clock. I just always wanted to boot a PC at 5.0 GHz. It's just a dream that's all. My main clock would range from 4.6 GHz to at most 4.8.

5ghz on all cores with the 4790K is winning the silicon lotto jackpot.

The only advice I can give is that you try with only a core or two. Other than that, it more than likely ain't gonna happen.

And what type of cooling are you using? Mind you the TDP of Devils’ Canyon is not at all capable of allowing it to be stable at 5.0GHz.

[The Chicagoan]

引用自 The Spoopy Kitteh：

引用自 Revelene：

5ghz on all cores with the 4790K is winning the silicon lotto jackpot.

The only advice I can give is that you try with only a core or two. Other than that, it more than likely ain't gonna happen.

And what type of cooling are you using? Mind you the TDP of Devils’ Canyon is not at all capable of allowing it to be stable at 5.0GHz.

Liquid cooling, I only have a 120 rad so I need an upgrade.

[TehSpoopyKitteh]

引用自 The Chicagoan：

引用自 The Spoopy Kitteh：

And what type of cooling are you using? Mind you the TDP of Devils’ Canyon is not at all capable of allowing it to be stable at 5.0GHz.

Liquid cooling, I only have a 120 rad so I need an upgrade.

4970K can’t reach 5.0GHz stable at all, let alone boot at that speed, regardless of cooling. Your best bet is to just go with 4.4GHz~4.6GHz.
Like I said earlier, just use the default volatage and stick to adjusting the clock speed alone by changing the clock multiplier.

[The Chicagoan]

引用自 The Spoopy Kitteh：

引用自 The Chicagoan：

Liquid cooling, I only have a 120 rad so I need an upgrade.

4970K can’t reach 5.0GHz stable at all, let alone boot at that speed, regardless of cooling. Your best bet is to just go with 4.4GHz~4.6GHz.
Like I said earlier, just use the default volatage and stick to adjusting the clock speed alone by changing the clock multiplier.

Wait I got a question, so right now I made sure I had the first 3 cores running at 5.0 GHz, the other one is currently running at 4.7 GHz, nothing really improved in anything like userbenchmark it says "turbo 4.7 GHz" even though in my bios it clearly says "turbo 5000 MHz" Why is it doing that and am I doing something wrong?