VMs and cores

[suicidalfranco]

Hi all, i currently have a system with an i5 6500 and has a linux user have a kvm setup for my late night gaming needs. Thing is that currently i can only allocate to my kvm two cores and therefore was considering picking up a 6700 but what i wanted to know first is:

Is there a performance difference between a kvm that uses 4 threads instead of 2 cores?

[KezzaMcFezza]

I think threads help the CPU cores, but i don't think 8 threads will increase performance on the KVM. Though i could be wrong but i'm sure threads are logical processors and don't really act as physical cores.

 

Hope this helps

[suicidalfranco]

Just now, ProKeero said:

I think threads help the CPU cores, but i don't think 8 threads will increase performance on the KVM. Though i could be wrong but i'm sure threads are logical processors and don't really act as physical cores.

 

Hope this helps

so... would it perform better if my VM had 2C/4T instead of the 2C/2T it has now? that's what i really need to know and also does a 2C/4T configuration solve issues on games that don't run on hardware that has less than four cores (like far cry 4 for example)

[KezzaMcFezza]

Just now, suicidalfranco said:

so... would it perform better if my VM had 2C/4T instead of the 2C/2T it has now? that's what i really need to know and also does a 2C/4T configuration solve issues on games that don't run on hardware that has less than four cores (like far cry 4 for example)

Yea it would, but 8 threads with 4 cores i don't think is going to help because of the way threads work. I'm not expert but basically threads get the information ready and give it to the cpu when its ready or done processing information. If the cpu has no threads it would be slower because it has to process the information all on its own. it's basically having 8 extra cores but at the same time not really.

 

Hope this helps