i5-9400

[Noob872]

The advertised boost clock for my chip is 4.1 ghz, but i a only hitting 3.89. Am i doing something wrong or is there a way to increase my boost clock. 

[minibois]

1 minute ago, Noob872 said:

The advertised boost clock for my chip is 4.1 ghz, but i a only hitting 3.89. Am i doing something wrong or is there a way to increase my boost clock. 

The 4.1Ghz is only if you use one core:

Quote

Max turbo frequency is the maximum single core frequency at which the processor is capable of operating using Intel® Turbo Boost Technology

 

[Noob872]

Just now, minibois said:

The 4.1Ghz is only if you use one core:

 

is there a way to check single core boost clock 

[Stu_Bear]

If you got a overclock mobo you can boost all the cores to 4.1ghz...if not 3.89 is plenty imho.

[Noob872]

1 minute ago, Stu_Bear said:

If you got a overclock mobo you can boost all the cores to 4.1ghz...if not 3.89 is plenty imho.

nah my mobo sucks so i g its 3.89 for me 

[AndreiArgeanu]

3 minutes ago, Stu_Bear said:

If you got a overclock mobo you can boost all the cores to 4.1ghz...if not 3.89 is plenty imho.

The i5 9400 is a locked cpu. If he had a Z series motherboard, it would and should have the same boost behaviour. At least I think so.

[minibois]

Just now, Noob872 said:

is there a way to check single core boost clock 

You would need to run a program that only runs on a single core, which could probably be done by finding a program that uses your CPU a lot and only allowing 1 thread to work for that program. 

Open the program you have in mind (like a CPU benchmark), go into Task Manager > Details and find the program, Set Affinity and only tick one of the threads. Now run the program and check the speed.

 

But ~3.9Ghz is the normal all-core boost for the CPU: https://en.wikichip.org/wiki/intel/core_i5/i5-9400

3 minutes ago, Stu_Bear said:

If you got a overclock mobo you can boost all the cores to 4.1ghz...if not 3.89 is plenty imho.

this CPU has a locked multiplier though, how is OP going to overclock that?

[Stu_Bear]

2 minutes ago, minibois said:

You would need to run a program that only runs on a single core, which could probably be done by finding a program that uses your CPU a lot and only allowing 1 thread to work for that program. 

Open the program you have in mind (like a CPU benchmark), go into Task Manager > Details and find the program, Set Affinity and only tick one of the threads. Now run the program and check the speed.

 

But ~3.9Ghz is the normal all-core boost for the CPU: https://en.wikichip.org/wiki/intel/core_i5/i5-9400

this CPU has a locked multiplier though, how is OP going to overclock that?

Enable all-core boost...just have all cores running at 4.1...technically it's not overclocking.  Maybe some non-OC mobos will allow you to do this ?  I forget things...

[VeganJoy]

11 minutes ago, Stu_Bear said:

Enable all-core boost...just have all cores running at 4.1...technically it's not overclocking.  Maybe some non-OC mobos will allow you to do this ?  I forget things...

i dont think thats how that works, most you can do is remove the power limits so that it would stay at the standard all core boost instead of throttling back to normal tdp