Question i9-9900K not boosting to 5Ghz.

[AdamWest]

I'm a newbie in the gaming PC world but I wanted to make a grand entrance because I've always dreamt to have a really powerful PC to enjoy gaming at maximum, so I've just bought a gaming PC with i9-9900k processor, Z390 Aourus Master Motherboard and RTX 2080 Super graphic card.

Like I said I'm still a newbie in hardware knowledge but I tried to inform myself as much as I could to have a basic hardware knowledge so I could really enjoy my PC and also learn about Overclocking, as I'm planning to OC in the future.

One of the first thing that I tried to mess up with was Intel's turbo boost technology. I wanted to see if my processor reaches 5ghz turbo speed during single core performance so I downloaded Cinebench R20 and HWMonitor and proceeded to run the single core Cinebench test, but it never goes above 4.7 ghz turbo speed and HWMonitor shows that all the cores are active at 4700 Mhz.

I haven't seen my processor go above 4.7 ghz whatever I do ( gaming, web browsing, ...). Is it because there always is some background process running and using more than 1 or 2 cores or do you think there's a problem with my processor?

 

[mdd1963]

Open HWMonitor right after you power on the PC, let it run for 10-15 minutes as you open/close assorted applications...

Many benchmarks and applications will have WIndows itself enlisting more than a single core...

Just opening and closing Chrome, or Notepad, might see a momentary spike to 5 GHz..

(Assuming you've done no tweaks in BIOS to manipulate /disable turbo speeds, and that you've not done any manipulation within Intel's XTU )

Normally, WIndows Power Plan being set to Balanced gives you the best behavior, where true idle conditions see clock speeds of 800-1000 MHz, then beginning some tasks sees one or more cores ramp to near 5 GHz...and full load should see all cores at/near 4.7 GHz...

(You mainboard's BIOS might have a TDP power limit option strictly enforcing a 90-95watt TDP, which might limit top end clock speeds as well...)

 

[AdamWest]

Open HWMonitor right after you power on the PC, let it run for 10-15 minutes as you open/close assorted applications...

Many benchmarks and applications will have WIndows itself enlisting more than a single core...

Just opening and closing Chrome, or Notepad, might see a momentary spike to 5 GHz..

(Assuming you've done no tweaks in BIOS to manipulate /disable turbo speeds, and that you've not done any manipulation within Intel's XTU )

Normally, WIndows Power Plan being set to Balanced gives you the best behavior, where true idle conditions see clock speeds of 800-1000 MHz, then beginning some tasks sees one or more cores ramp to near 5 GHz...and full load should see all cores at/near 4.7 GHz...

(You mainboard's BIOS might have a TDP power limit option strictly enforcing a 90-95watt TDP, which might limit top end clock speeds as well...)

Hi, I haven't tweaked my bios and I just updated it after getting my PC.

In idle right after when I power my PC HWMonitor shows that all cores are performing and they oscillate a lot and very fast; sometimes they go as low as 800 MHz and sometimes they all reach 4700 MHz.

I have a lot of RGB controlling software ( Razer Synapse, RGB Fusion, ICue, Msi Mystic Light...) and most of them run just after powering my PC, do you think that could be the reason that all cores are always performing , thus it is not possible to reach 5 GHz as this happens only on 1 or 2 core performance.

I tried to switch Multicore Enhancment on my Bios and I reached 5 Ghz in all cores but they were never going lower than that and my Vcore was around 1.35 and sometimes near 1.4 ( isn't that quite high?) so I turned it off.