Question Intel’s Turbo Boost Not working???

[thetiesthatbind2018]

So I’m trying to make my CPU hit the advertised turbo boost frequencies and I can’t! I got a feeling that there is something wrong going on.

So I tried with Load Optimized Settings to run the Single Core CPU Test from CB20, CB15 and also the Bench from ROG CPU-Z but all I got was 4.7, nothing more.

I had the same issue with my 8700K as well, so something feels odd.

Any ideas?

MOBO: ROG Maximus X Hero, i9 9900K

 

[rgd1101]

5GHz is when only 1 core is active.
what the temp?
full system spec? include make and model of the psu

 

[mdd1963]

Is this the same MB as you had the 8700K in? (as 4.7 GHz was the max turbo of the 8700K, there was no issue/'problem' there beforehand)

Is the new CPU recognized /ID'd in the BIOS as a 9900K, w/ CMOS cleared/reset beforehand?

(There might also be a 95 watt TDP power limit in the BIOS that might need disabled to see higher consistent clock speeds assuming your cooling is adequate, or, a fresh install of WIndows; is the 9900K CPU ID'd properly within System Information summary and Device Mngr?)

 

[mdd1963]

All cores going to 'only' 4.7 GHz under an all-core heavy load such as a stress tester, rendering, etc., is technically the correct behavior...

You can perhaps check HWMonitor's noted low/high core speeds after running a game for a few minutes to see if one or two cores are going as high as 5 GHz...

You can also see if your MB has MCE as an option in the BIOS, which would aim to run all cores as high as possible (max turbo clock of 5 GHz for 9900K), cooling and power-limits permitting; keep an eye on cooling, as this could easily exceed 140 -150 watts TDP under full load

 

[thetiesthatbind2018]

NZXT H700 BLACK | CORSAIR RM750X | ASUS ROG MAXIMUS X HERO | INTEL I9-9900K | G.SKILL TRIDENTZ 16GB DDR4-3200MHz | EVGA GEFORCE GTX 1080 FTW2 | SAMSUNG 960 EVO NVMe M.2 250GB | SAMSUNG 860 EVO 500GB | SAMSUNG 850 EVO 250GB | WD CAVIAR BLACK 1TB | CORSAIR H115i PRO RGB

https://imgur.com/FjyoKeO

View: https://m.imgur.com/FjyoKeO?r

5GHz is when only 1 core is active.
what the temp?
full system spec? include make and model of the psu

 

[thetiesthatbind2018]

All cores going to 'only' 4.7 GHz under an all-core heavy load such as a stress tester, rendering, etc., is technically the correct behavior...

You can perhaps check HWMonitor's noted low/high core speeds after running a game for a few minutes to see if one or two cores are going as high as 5 GHz...

You can also see if your MB has MCE as an option in the BIOS, which would aim to run all cores as high as possible (max turbo clock of 5 GHz for 9900K), cooling and power-limits permitting; keep an eye on cooling, as this could easily exceed 140 -150 watts TDP under full load

I think the single core test should be able to show even for a few seconds that exact value.

On my daily use I’m using the XMP profile and the MCE is on Auto per Core (I clicked yes when I activated the XMP) I’ve put manually 1.1 at VSA and VCCIO and I get 4.7 all cores and that’s all. Played PUBG and checked it out, same behavior with my 8700K

 

[thetiesthatbind2018]

Is this the same MB as you had the 8700K in? (as 4.7 GHz was the max turbo of the 8700K, there was no issue/'problem' there beforehand)

Is the new CPU recognized /ID'd in the BIOS as a 9900K, w/ CMOS cleared/reset beforehand?

(There might also be a 95 watt TDP power limit in the BIOS that might need disabled to see higher consistent clock speeds assuming your cooling is adequate, or, a fresh install of WIndows; is the 9900K CPU ID'd properly within System Information summary and Device Mngr?)

Yes it's the same motherboard, and no, neither Intel i7-8700K was able to hit that 4.7 GHz Turbo Boost Value. At least, I never saw it. I had to manually OC my CPU to 4.7 GHz. If it was a Power Limit issue, it would just self underclock under stress test.

Yes, I9-9900K is correctly ID by any app, BIOS, Device Manager, System Info and Task Manager as well.

 

[thetiesthatbind2018]

I ran IBT and 5GHz appeared to 2 cores and 4.8 to one so I guess this is solved ?

Thanks for your time guys!

 

[mdd1963]

1-2 cores at 5.0 GHz would be correct behavior....

(My point about 95 watt TDP limit would be that I'd think it would be hard to even hit 4.7 GHz on all core with that a 95 watt TDP limit imposed...; a 7700K hit's 80 watts at all-core of only 4.5 GHz w/ 4 cores/8 threads in P95 v26.6/small FFTs...; what power does HWMonitor show during all-core 4.7 GHz for a 9900K? (I'd be impressed if under 135-140 watts, frankly..)

what is "IBT"? (intel Burn Test?)

 

[karenjoly]

Is this what you are looking for ? The power used by the 9900K in my system on full load.

 

[thetiesthatbind2018]

1-2 cores at 5.0 GHz would be correct behavior....

(My point about 95 watt TDP limit would be that I'd think it would be hard to even hit 4.7 GHz on all core with that a 95 watt TDP limit imposed...; a 7700K hit's 80 watts at all-core of only 4.5 GHz w/ 4 cores/8 threads in P95 v26.6/small FFTs...; what power does HWMonitor show during all-core 4.7 GHz for a 9900K? (I'd be impressed if under 135-140 watts, frankly..)

what is "IBT"? (intel Burn Test?)

Yes

Is this what you are looking for ? The power used by the 9900K in my system on full load.

No, that wasn't what I was looking for.