Msconfig boot processors

[Yiannis15]

Hello yesterday I went to msconfig and saw that the boot processors box is unticked. I ticked it just to see the cores I have and then I unticked it. Is there any difference if the box is unticked on 1 CPU or ticked on 1 CPU?

[ecfteam1]

Can you give more details on what exactly you clicked on?
Did you went to MSConfig -> Boot -> Advanced Options and clicked on Number of processors?

[Yiannis15]

1 hour ago, ecfteam1 said:

Can you give more details on what exactly you clicked on?
Did you went to MSConfig -> Boot -> Advanced Options and clicked on Number of processors?

Yes

[Yiannis15]

44 minutes ago, Yiannis15 said:

2 hours ago, ecfteam1 said:

Can you give more details on what exactly you clicked on?
Did you went to MSConfig -> Boot -> Advanced Options and clicked on Number of processors?

 

Is there any difference

[ecfteam1]

Not really, the option dates back since Windows XP if not longer, if I'm not mistaking and for Windows 7/10 it doesn't make any difference for a 2007 upwards CPU. In theory, from what I know, that option should tell Windows how many cores to use.

Also, you'll see next to this option, Maximum Memory, which should do the same for Memory RAM but I found out to be buggy, on different specs (laptops or PCs) and if you set it at your maximum amount of memory, for example if for 4GB you set 4096 it blue-screens after some time in certain loads.
I would recommend, not to bother with it if you're looking for performance improvements. It won't help you in this regard.

[Mick Naughty]

As long as you don’t have more cores than Windows is designed that portion for. As in it can only go to 8, atleast on all the version I use. 

 

[Yiannis15]

15 minutes ago, ecfteam1 said:

Not really, the option dates back since Windows XP if not longer, if I'm not mistaking and for Windows 7/10 it doesn't make any difference for a 2007 upwards CPU. In theory, from what I know, that option should tell Windows how many cores to use.

Also, you'll see next to this option, Maximum Memory, which should do the same for Memory RAM but I found out to be buggy, on different specs (laptops or PCs) and if you set it at your maximum amount of memory, for example if for 4GB you set 4096 it blue-screens after some time in certain loads.
I would recommend, not to bother with it if you're looking for performance improvements. It won't help you in this regard.

Now I have both unchecked , CPU is on 1 and ram on 0

[Yiannis15]

22 hours ago, ecfteam1 said:

Not really, the option dates back since Windows XP if not longer, if I'm not mistaking and for Windows 7/10 it doesn't make any difference for a 2007 upwards CPU. In theory, from what I know, that option should tell Windows how many cores to use.

Also, you'll see next to this option, Maximum Memory, which should do the same for Memory RAM but I found out to be buggy, on different specs (laptops or PCs) and if you set it at your maximum amount of memory, for example if for 4GB you set 4096 it blue-screens after some time in certain loads.
I would recommend, not to bother with it if you're looking for performance improvements. It won't help you in this regard.

If it's checked on 1 core it means the PC uses 1 core and if it's unchecked it means it uses all cores?

[ecfteam1]

On 1/27/2019 at 2:33 PM, Yiannis15 said:

If it's checked on 1 core it means the PC uses 1 core and if it's unchecked it means it uses all cores?

Depends on your processor. If you leave it unchecked Windows will handle this option automatically and it will adjust the core usage based on your usage and Windows's needs for optimal experience.

If you check it and leave it like that, it will use, in theory, only one core for your processes (background applications). Value "1" is the default one.

If you click on the multiple option, again, in theory, it will manually adjust the usage based on your preferences, 1/2/3/4/5..etc cores, depending on your core count and will try to force use all cores selected for all opened processes. For example, on my machine, an AMD Quad-Core:

Keep in mind that it depends a lot on the applications that you are using and how they are written. Games usually use 2-6 cores (rarely 8-12 cores). Professional apps like Photoshop, Premiere, Cinebench etc., will use as many as available. But again, all of this is in theory without any performance gains.

I believe this option might be useful when you are trying to limit (overall usage) your OS to use a certain amount of cores.