core x GHz ?

[mariocyprus]

hi guys,
i have a question.. i think easy..
GHz for CPU's is per core ?
4GHz 4 core is 4x4=16GHz ?
and
3.5GHz 6 core is 6x3.5=21GHz ?
or not work like this ?

 

[kira70591]

The core frequencies do not add up. Each core operates with its own frequency. Each core will be able to process information at its set frequency.

 

[smog0]

The core frequencies do not add up. Each core operates with its own frequency. Each core will be able to process information at its set frequency.

also please take in mind that a 3.5Ghz Intel its different than a 3.5Ghz AMD
if you need to compare 2 different processors you can check online for benchmarks or
you can ask here

 

[jshoop]

i'm guessing your trying to decide what proceccers are faster than others? kira is 100% correct, each core is essentially independant

you also have to take into account how efficient each processor is. for example, a single intel core performs much better than a single amd fx core, even the the fx core is at 4 ghz and the intel core is at 3.2 ghz.

 

[mariocyprus]

how to can i know if some processor is better if has lower GHz but more cores ?
1 processor : 4 cores 4.2 GHz
2 processor : 6 cores 3.5 GHz
why processor 2 is better ?

 

[mariocyprus]

i speak for AMD.. i know Intel work different

 

[jshoop]

it sounds like your comparing between the fx-4300 and fx-6300.

the second one is better because it has more cores. the fx series of processors have weak cores, so the more the better. this doesnt apply much to intel processors, as they are much more effecient

 

[mariocyprus]

yes 4300 and 6300
i know 6300 is better but why ?
4300 is faster.. so if i have 3 programs/games open
1: need 1.5 GHz
2: need 1 GHz
3: need 1.5 Ghz
my cpu 4300 will not work better ?

 

[kira70591]

The 6 core is "better" for multi threaded applications. The more threads / cores that an application can take advantage of, the more of a performance gain that you will get from using a multi core CPU. The higher clocked lesser core CPU will perform better in single thread loads; however, more and more applications are supporting multiple threads / cores so the point is kind of becoming moot. If you get a capable CPU, you can also overclock the cores to a certain extent to gain more performance in single threads.

You can kind of think of it as a workbench. The more space that you have, the more efficient that you can work as you have more area to work with an to organize with. The more CPU cores that you have, the more space / power that you have to work with and the job can be done more efficiently. Generally, as long as CPUs are within the same architecture family, the more efficient it will be the more cores that you have.

 

[jshoop]

as kira said, more programs are becoming multithreaded.

since you'll be "multitasking" with multiple programs open, the six cores will help you evenly distribute the programs around, allowing for better overall performance.

by the way i really like that workbench analogy kira, very helpful and easy to understand

 

[mariocyprus]

yes i understand... Thank you guys

 

[kira70591]

Thanks. I was trying to come up with something halfway decent without making myself sound foolish as I am on the verge of face slapping my keyboard from falling asleep 😛.

You are welcome Mario, if you have any other questions feel free to ask!