Will a fast CPU run cooler than a slow CPU on idle?

[somebodyThatIUsedToKnow]

I am a bit of a newbie with CPUs, so please forgive me if I am misinformed.

 

Say I had two Intel CPUs, both the same architecture, both the same TDP, one is an i7 and the other an i3. If they are both idling on the desktop, will the i7 have lower temps? Also, will the i7 be hotter under full load?

 

Thanks.

[Morgan MLGman]

Idle temps are irrelevant, really. Whether the CPU idles at 30 degrees or 28 degrees doesn't matter at all, it could just as well idle at 50.

 

As for load temps, yeah, the i7 will be hotter cause it's got double the amount of i3's cores meaning it just produces more heat.

[Sauron]

In idle they'll have very similar temperatures. Under load if the TDP is the same the temperatures should be about the same (but you'll have a hard time finding an i3 with the same TDP as an i7).

 

Of course this gets much messier if you start considering mobile parts, which have the same naming scheme as desktop parts despite being very different.

[ThinkWithPortals]

The answer, as is the case in many tech-related subjects, is "it depends".

 

Assuming you're using the same cooler on both, then the temps should be roughly equal. If anything, the i7 should run hotter across the board, due to higher frequencies and voltages. I can't think of any reason why the i7 should run cooler at idle.

[Mira Yurizaki]

If you wanted to get a little analytical, a faster CPU should have, given the same workload, an overall time being cooler since it completes its tasks faster and thus goes to sleep longer. But when both CPUs are idle, assuming they're from the same family of processors, they will idle at roughly the same temperature.

[somebodyThatIUsedToKnow]

4 minutes ago, ThinkWithPortals said:

The answer, as is the case in many tech-related subjects, is "it depends".

 

Assuming you're using the same cooler on both, then the temps should be roughly equal. If anything, the i7 should run hotter across the board, due to higher frequencies and voltages. I can't think of any reason why the i7 should run cooler at idle.

 

 

 

4 minutes ago, Sauron said:

In idle they'll have very similar temperatures. Under load if the TDP is the same the temperatures should be about the same (but you'll have a hard time finding an i3 with the same TDP as an i7).

 

Of course this gets much messier if you start considering mobile parts, which have the same naming scheme as desktop parts despite being very different.

 

 

 

5 minutes ago, Morgan MLGman said:

Idle temps are irrelevant, really. Whether the CPU idles at 30 degrees or 28 degrees doesn't matter at all, it could just as well idle at 50.

 

As for load temps, yeah, the i7 will be hotter cause it's got double the amount of i3's cores meaning it just produces more heat.

 

 

 

1 minute ago, M.Yurizaki said:

If you wanted to get a little analytical, a faster CPU should have, given the same workload, an overall time being cooler since it completes its tasks faster and thus goes to sleep longer. But when both CPUs are idle, assuming they're from the same family of processors, they will idle at roughly the same temperature.

 

 

Thanks so much for answering my question