6850k clock speed help.

[elkido122]

I am using riva tuna and hwinfo combined with afterburner to show my cpu core clock speeds on each core. I am having a hard time understanding why core 0 runs at 1299mhz and cores 1-5 run at the rated 3800 mhz. shouldnt every core in a game like Player unknowns battlegrounds make every core run at 3800 and not 5 of the 6? thanks

 

[Pick2]

Which CPU and Motherboard ?

 

[elkido122]

i7 6850k with a msi x99 gaming pro carbon

 

[elkido122]

hope that helps

 

[elkido122]

anyone else..

 

[Carfax83]

Solving this is pretty simple. All you need to do is go into your UEFI and select the option to run all cores at the maximum speed. Without that option selected, the CPU will down clock some of its cores depending on the workload.

 

[elkido122]

x99 gaming pro carbon... i really am having difficulty finding the option.

 

[Carfax83]

It should be there. On my motherboard, it's under the menu which specifically targets tweaking and overclocking. If your board doesn't have it (but I'm sure it does), you could also just elevate your Windows power profile to performance rather than balanced.

 

[elkido122]

my power option is set to performance. still core 0 runs at 1.2 and the other 5 cores at 3.8ghz... so odd seeming to me

 

[Carfax83]

OK found it. Check at 0:49s: It's CPU ratio [All core] under advanced settings.

 

[elkido122]

https://drive.google.com/open?id=0B7plP9vX5FAoaEZENnZrVWhwWW8

 

[elkido122]

i see that... mine was set to that, cpu ratio auto and cpu ratio apply mode is ( all core ) .. still downclocks the one core at 1.2ghz and has the others at 3.8

 

[Carfax83]

No, you need to put your CPU ratio from auto to 38, so that all cores will run at that speed.

 

[elkido122]

if i go to click on cpu ratio it does nothing. it stays at auto. the only thing i can change is the ( cpu ratio apply mode ) but that only allows you to set it to turbo or set it to per core.. weird

 

[elkido122]

I don't know what to do now

 

[Carfax83]

I don't know what to do now

You must be unfamiliar with UEFI. You have to type in whatever clock speed multiplier you want the CPU to have. So click on it, and then type in 38. Then make sure it's set to all cores, hit save and then profit!

 

[elkido122]

should i set it to fixed or dynamic mode for the cores. and will this cause unwanted heat or power consumption

 

[Carfax83]

I would set it to fixed, and make sure that EIST is turned on and C1 and C1e power states are enabled. That will make sure that your CPU down clocks and reduces voltage when idling.

 

[elkido122]

i might leave it the way it is default in the bios. maybe the games now days cant use 6 efficiently, i see only 5 getting maxed even on BF1. i guess i dont need to have all cores running at max at all times anyways right?

 

[Carfax83]

No, all cores don't need to be running at max at all times. In fact, EIST usually prevents that from happening unless the application demands it. But the fact that all those cores are running at max clock speed and a single core is running at desktop/idle speed is kind of weird. I don't think I've ever seen that myself. If anything all the cores should be varying their clock speeds dynamically based on their load. If one core is stuck in idle mode while the rest are at max clocks, that isn't good. Your CPU might possibly be defective.

 

[elkido122]

Yeah I did notice that handbrake was the only app that I have that made that other core bounce up to that 3.8. in other words all cores we're maxed when I do an encoding .

 

[elkido122]

shouldn't BF1 and player unknowns battlegrounds max out 6 cores?

 

[Carfax83]

I don't know about PUBG, but BF1 uses the Frostbite 3 engine and it can scale to 8 threads, so it should definitely be using all of your cores. If one core is still idling during BF1 gaming, then something is definitely wrong with your system.

 

[elkido122]

i dont know that its a CPU issue, especially considering handbrake used all 6 of my cores at max. maybe these games are not truly 6 core games like they claim?

 

[LTC8K6]

Intel has a processor diagnostic tool, but it doesn't list BW-E chips.

Maybe you can run the Intel XTU stress test and watch the core graphs?