i7 6700K = 4Ghz.. won't these overheat?

[omega3]

My father is putting together a custom system and he will get enough fans and all.. just wondering if the i7 6700K he wants doesn't risk overheating since it runs standard at a whopping 4Ghz which seems alot to me. I thought that the industrie's switch to multi cores was because any core running much more then 3Ghz was considered the physical limits without overheating.. so isn't getting an i7 6700K with 4Ghz not asking for trouble or has the tech evolved that these higher clock speeds don't give probs anymore?

Anything else he has to pay attention to when putting a system like this together? Thanks.

 

[ShintaiDK]

Why would it overheat? Its a 91W CPU, relatively low historical. Plus you can get 125/140W desktop CPUs.

My own peaks at around 75C with Prime95 and a reduced fanspeed to only 1000rpm with a TS15A cooler.

 

[Techhog]

Processors will not overheat at their stock speed unless you messed something up or you have a bad CPU cooler. There's nothing to worry about. Just get something like a Hyper 212 EVO andit won't even come close to overheating. Hell, even some $20 coolers will handle stock speeds just fine.

 

[omega3]

Why would it overheat? Its a 91W CPU, relatively low historical. Plus you can get 125/140W desktop CPUs.

My own peaks at around 75C with Prime95 and a reduced fanspeed to only 1000rpm with a TS15A cooler.

Sorry for maybe dumb question but what does the Watt have to do with the clockspeed. I just image a CPU running at 4 Ghz to heat up more then one at 3Ghz.

 

[ShintaiDK]

Sorry for maybe dumb question but what does the Watt have to do with the clockspeed. I just image a CPU running at 4 Ghz to heat up more then one at 3Ghz.

Power consumption equals the heat it will generate.

 

[Rakehellion]

I just image a CPU running at 4 Ghz to heat up more then one at 3Ghz.

Only if it's the exact same CPU.

 

[iSkylaker]

The previous i7-4790k run at 4.0ghz and comes bundled with the low-end Intel stock fan that is even available for i3 and Pentium CPU. It won't cause overheating as long as your CPU cooler/fan is properly installed.

 

[ShintaiDK]

The previous i7-4790k run at 4.0ghz and comes bundled with the low-end Intel stock fan that is even available for i3 and Pentium CPU. It won't cause overheating as long as your CPU cooler/fan is properly installed.

Not entirely true. There are 2 stock coolers. 65W aluminium only and a 95W with a copper core. Celeron/Pentium/i3 got the 65W, i5 and i7 the 95W one. Not counting special SKUs.

 

[HexiumVII]

As long as your ambient temperature isn't too insane, like under 113F/45C, any tower cooler will be sufficient.

I've been mining coins for almost 2 years and have a dozen Radeons pegged at 90C for that long and still running fine.

 

[iSkylaker]

Not entirely true. There are 2 stock coolers. 65W aluminium only and a 95W with a copper core. Celeron/Pentium/i3 got the 65W, i5 and i7 the 95W one. Not counting special SKUs.

You learn something new everyday. I actually thought the all-aluminum one was introduced with Skylake CPUs.

 

[ShintaiDK]

You learn something new everyday. I actually thought the all-aluminum one was introduced with Skylake CPUs.

The aluminium one is the only one used with Skylake. Since the 2 91W K SKUs dont ship with a cooler. But else its been so for ages. 2 coolers, one for 65W(and down) and one up to 95W.

 

[Yuriman]

Food for thought, but AMD sells an 8-core 5.0ghz CPU and it can be cooled without extreme equipment.

You don't want to buy it though, because the 6700k is faster, despite fewer cores and lower clockspeed. There's a lot more to the story than core count and frequency.

 

[happy medium]

AMD sells an 8-core 5.0ghz CPU and it can be cooled without extreme equipment

I didn't know that...... what would you consider "extreme equipment" a car radiator?

 

[Yuriman]

I didn't know that...... what would you consider "extreme equipment" a car radiator?

A $30 air cooler will suffice so long as you have good case ventilation and don't intend to raise clocks at all. Most people with one will probably opt for an AIO liquid cooler or a really big tower cooler though, so they stay well away from maximum safe temps.

 

[Techhog]

I didn't know that...... what would you consider "extreme equipment" a car radiator?

Gotta love the needlessly passive-aggressiveness this post... and a large number of your posts. If you consider a 120mm radiator to be extreme equipment, that's your business. Everyone has different opinions, no matter how silly they may be.

 

[Techhog]

Sorry for maybe dumb question but what does the Watt have to do with the clockspeed. I just image a CPU running at 4 Ghz to heat up more then one at 3Ghz.

Heat is energy. How hot a CPU gets is entirely dependent on how much heat it expels, which can be measured in watts. Clockspeed alone means nothing. If it did, we'd have never even broken the 1GHz barrier.

 

[toyota]

Why would it overheat? Its a 91W CPU, relatively low historical. Plus you can get 125/140W desktop CPUs.

My own peaks at around 75C with Prime95 and a reduced fanspeed to only 1000rpm with a TS15A cooler.

wattage has nothing to do with whether a cpu can overheat or not. a 5w cpu can overheat without adequate airflow/cooling. hell mobile cpus throttle all the time because they get hot.

 

[lyssword]

Not entirely true. There are 2 stock coolers. 65W aluminium only and a 95W with a copper core. Celeron/Pentium/i3 got the 65W, i5 and i7 the 95W one. Not counting special SKUs.

yea g3258 is a copper one too

 

[2is]

Sorry for maybe dumb question but what does the Watt have to do with the clockspeed. I just image a CPU running at 4 Ghz to heat up more then one at 3Ghz.

Everything else being equal, yes, a 4GHz CPU will produce more heat than a 3GHz CPU. That doesn't mean it will OVERheat though.

 

[mv2devnull]

I thought that the industrie's switch to multi cores was because any core running much more then 3Ghz was considered the physical limits without overheating.

Year 2004: Pentium 4, NetBurst microarchitecture, 90 nm lithography. TDP 115 W (the 3.8 GHz model). https://en.wikipedia.org/wiki/Pentium_4
Year 2015: Skylake. Different microarchitecture, 14 nm lithography. TDP 91 W (the 4.0-4.2 GHz model).

The latter will produce less heat at max load. It also has a throttle that can slow down the clock to prevent overheating. "Other things" are not equal between these two.

That at stock. Overclocking goes beyond the specs.

 

[BigDaveX]

Year 2004: Pentium 4, NetBurst microarchitecture, 90 nm lithography. TDP 115 W (the 3.8 GHz model). https://en.wikipedia.org/wiki/Pentium_4
Year 2015: Skylake. Different microarchitecture, 14 nm lithography. TDP 91 W (the 4.0-4.2 GHz model).

Just as a side-note, Intel calculated TDP differently back in the Netburst era. By their current model, the TDP of the fastest Prescott would be something like 150W.

In any case, the main reason why clockspeeds hung around the 3.0-3.5GHz mark for so long was because it was more power-efficient to keep clockspeeds there and improve the processor's IPC. However, such improvements are getting harder and harder to achieve, hence why Intel's clockspeeds have started creeping back up again over the last couple of years.

 

[alecmg]

Many motherboards will feed 6700K higher voltage than necessary. My cpu will take 1.27V on default settings, which is enough to run at 4,5GHz. But if you don't need to exceed default clocks, you can manually lower decrease voltage to something like 1.12V. Test for stability obviously and enjoy significant heat and power decrease.

 

[LTC8K6]

My father is putting together a custom system and he will get enough fans and all.. just wondering if the i7 6700K he wants doesn't risk overheating since it runs standard at a whopping 4Ghz which seems alot to me. I thought that the industrie's switch to multi cores was because any core running much more then 3Ghz was considered the physical limits without overheating.. so isn't getting an i7 6700K with 4Ghz not asking for trouble or has the tech evolved that these higher clock speeds don't give probs anymore?

Anything else he has to pay attention to when putting a system like this together? Thanks.

We've been well beyond 3Ghz on multi-core cpus for a very long time now.

In fact, we've been at or beyond 4ghz for a long time now.

The 4ghz / 4.4ghz turbo i7-4790K was launched in the 2nd quarter of 2014.

The 4.2ghz / 4.3ghz turbo FX-4170 was launched in February of 2012.

 

[bononos]

Didn't the 4770, 4790 have overheating/throttling issues with the stock heatsink? And using thermal paste instead of solder might've made the issue worse.

 

[ShintaiDK]

Didn't the 4770, 4790 have overheating/throttling issues with the stock heatsink? And using thermal paste instead of solder might've made the issue worse.

Nope. The blame was on mobo makers with their auto OC and high voltage.