i7 4790K Question

[checo]

Hello people, I have a question regarding the i7 4790K. Since the processor turbo boosts to 4.4 ghz, hypothetically speaking, wouldn't it be fine to just lock it at the 4.4ghz with the stock voltage while using the stock cpu heatsink/fan? or even lowering the voltage a tad. Let me know, I'm curious. Thanks.

[RelentlessAF]

Depends, an i5 can be overclocked using the stock cooler. However an i7 with it's hyperthreading capabilities can output a lot more heat. So you may need a third party cooler for it.

[CowsGoRoar]

Yes. I locked 4 cores on my 4770K at 3.9 GHz.

 

Turbo Boost is when one core overclocks to the higher speed that you see.

[CowsGoRoar]

Depends, an i5 can be overclocked using the stock cooler. However an i7 with it's hyperthreading capabilities can output a lot more heat. So you may need a third party cooler for it.

Not a lot more heat, unless 3C-5C is a lot of heat to you.

[checo]

Yes. I locked 4 cores on my 4770K at 3.9 GHz.

 

Turbo Boost is when one core overclocks to the higher speed that you see.

so the turbo boost is overclocking just one of the four? instead of overclocking all cores? that would produce more heat to have all cores running at 4.4 ghz i am assuming? 

[Guest]

The i7 4790k actually has a few problems with the stock heatsink at stock settings. It gets pretty warm at 4.4GHz. The "stock" voltage is actually fluctuating most of the time and the boost clock is also not present on all 4 cores at the same time. Get a decent aftermarket cooler for 30 bucks if you want to start overclocking.

[CowsGoRoar]

so the turbo boost is overclocking just one of the four? instead of overclocking all cores? that would produce more heat to have all cores running at 4.4 ghz i am assuming? 

Yes. You can also watch Linus' video on turbo boost. That's how I learned what turbo boost is.

[Gr8White_Bear]

The i7 4790k actually has a few problems with the stock heatsink at stock settings. It gets pretty warm at 4.4GHz. The "stock" voltage is actually fluctuating most of the time and the boost clock is also not present on all 4 cores at the same time. Get a decent aftermarket cooler for 30 bucks if you want to start overclocking.

212 EVO?

[Enderman]

so the turbo boost is overclocking just one of the four? instead of overclocking all cores? that would produce more heat to have all cores running at 4.4 ghz i am assuming? 

Turbo boost overclocks all the cores to 4.4GHz not just one. There is no point to locking the frequency to 4.4 when it will already go to 4.4GHz when it needs to.

[RelentlessAF]

Not a lot more heat, unless 3C-5C is a lot of heat to you.

Eh, I've heard the i7's get quite a lot hotter than i5 CPU's.

[wng_kingsley7]

Hello people, I have a question regarding the i7 4790K. Since the processor turbo boosts to 4.4 ghz, hypothetically speaking, wouldn't it be fine to just lock it at the 4.4ghz with the stock voltage while using the stock cpu heatsink/fan? or even lowering the voltage a tad. Let me know, I'm curious. Thanks.

assuming that when you press the "auto overclock" button it clocks it to the max turbo which is 4.4Ghz you should go into your Z87/97 bios and lower the voltage. If you play around & test it well enough you'll know the boundaries of your i4790K, I won't encourage the temps will be too astonishing however lowering the voltage will help a fair amount.

[Enderman]

Yes. You can also watch Linus' video on turbo boost. That's how I learned what turbo boost is.

No it's not just one core. If the CPU is properly cooled all cores can reach the turbo boost frequency. 

 

Form the intel website:

Availability and frequency upside of Intel Turbo Boost Technology 2.0 state depends upon a number of factors including, but not limited to the following:

• Type of workload
• Number of active cores
• Estimated current consumption
• Estimated power consumption
• Processor temperature

On a standard desktop with a good CPU cooler, you can see all cores reach the max turbo boost frequency when the CPU is under 100% load.

[checo]

assuming that when you press the "auto overclock" button it clocks it to the max turbo which is 4.4Ghz you should go into your Z87/97 bios and lower the voltage. If you play around & test it well enough you'll know the boundaries of your i4790K, I won't encourage the temps will be too astonishing however lowering the voltage will help a fair amount.

 

Yes. You can also watch Linus' video on turbo boost. That's how I learned what turbo boost is.

So the 4790k can run a steady 4.4ghz with the stock fan? especially if the voltage is lowered?

 

Thanks for that video, useful info.

[airdeano]

So the 4790k can run a steady 4.4ghz with the stock fan? especially if the voltage is lowered?

 

yes, on stock locked multiplier, you can undervolt to almost 1.000v and lower the

actual load temperatures quite abit. on my 4770k i dropped from 68° loaded to 53°

(granted it was a 240 AIO) but sill the advantages of undervolting are still impressive

and stable.

[Guest]

212 EVO?

 

Still a great cooler for the price, and it's definitely possible to get a nice overclock with it.

[checo]

No it's not just one core. If the CPU is properly cooled all cores can reach the turbo boost frequency. 

 

Form the intel website:

Availability and frequency upside of Intel Turbo Boost Technology 2.0 state depends upon a number of factors including, but not limited to the following:

• Type of workload
• Number of active cores
• Estimated current consumption
• Estimated power consumption
• Processor temperature

On a standard desktop with a good CPU cooler, you can see all cores reach the max turbo boost frequency when the CPU is under 100% load.

so then my question would be: would it be able to get 4.4 on all cores when it needs to with a stock heatsink/fan?

[CowsGoRoar]

So the 4790k can run a steady 4.4ghz with the stock fan? especially if the voltage is lowered?

 

Thanks for that video, useful info.

If you're fine with it at higher temps like maybe 85C (give or take 10C) then yes.

[checo]

yes, on stock locked multiplier, you can undervolt to almost 1.000v and lower the4

actual load temperatures quite abit. on my 4770k i dropped from 68° loaded to 53°4

(granted it was a 240 AIO) but sill the advantages of undervolting are still impressive

and stable.

yea, I'm more interested in the high frequency with low voltage. 

[wng_kingsley7]

So the 4790k can run a steady 4.4ghz with the stock fan? especially if the voltage is lowered?

 

Thanks for that video, useful info.

some motherboards on the Z97 chipset can have the i7 4790K on turbo all the time. With a stock fan/cooler you'd be quite lucky 4.3Ghz is reachable but remember to undervolt it to find whether it's stable or not (anything above 1.3v without a very decent high-performance air cooler should not be overclocked)

[CowsGoRoar]

@Enderman, explain this please. http://imgur.com/i9gYKnC

[Enderman]

@Enderman, explain this please. http://imgur.com/i9gYKnC

What CPU is that...?

[CowsGoRoar]

What CPU is that...?

My 4770K. The left is default, and my right is what I had done. The cores have their specific speed, until I set it to all 4 cores having 3.9 GHz.

 

Do note that I undervolted it by 50 mV.

[Enderman]

so then my question would be: would it be able to get 4.4 on all cores when it needs to with a stock heatsink/fan?

All cores probably not. The stock heatsink sucks, and it will probably thermally throttle before it can reach 4.4 on all cores.

[checo]

I will probably just buy an evo 212 or similar when i buy the i7, and if i ever feel the need to overclock the option will be there

[checo]

or i will increase my chance of the turbo boost reaching all 4 cores. or setting it to lock at 4.4. Edit: a safe, stable "overclock"