10900KF Overclock?

[WaitDontSh00t]

Hey guys!

I'm not a pro at overclocking, but I was hoping to get some help with my new to me, 10900kf. I've played around with it so far, but was a bit afraid to push it any further without any guidance.

I have a Asus Z590 Strix-E, Corsair Vengeance 32GB 4000Mhz and Dual 980Ti Hybrids. CPU is cooled by a Corsair Capellix 360mm.

 

In BIOS, the "SP" Rating, which seems to be the "quality" of it? I'm not sure what's good and bad, but mine is rated at 85. Currently sitting at 5Ghz with an adaptive voltage, maxing out at 1.290

Besides that, I haven't messed with too many of the other BIOS settings. I just have the CPU capability maxed out and Load-Line Calibration is set to 6. Under Gaming load or Cinebench, max package temp seems to be 74C (Fans weren't full speed).

 

Also as a side note, for some reason when on my desktop/idle, my CPU isn't downclocking. It's just staying at a constant 4.8-5.0Ghz. Any clue to why this would be happening?

Any input or advice would be greatly appreciated, thank you in advance!!

 

Do you guys think I should stay at 5Ghz or try to push it further? Safe Voltages? Do you think where I'm at now is a good position?

[Jurrunio]

5 minutes ago, WaitDontSh00t said:

Any clue to why this would be happening?

turned off C-states?

 

5 minutes ago, WaitDontSh00t said:

Do you guys think I should stay at 5Ghz or try to push it further? Safe Voltages? Do you think where I'm at now is a good position?

Safe voltage for 14nm is 1.4V, but you'll most likely overheat the CPU first. Can still go faster but with 980Ti, overclocking the CPU further will not lead to better performance in anywhere but benchmarks

[WaitDontSh00t]

4 minutes ago, Jurrunio said:

turned off C-states?

 

Safe voltage for 14nm is 1.4V, but you'll most likely overheat the CPU first. Can still go faster but with 980Ti, overclocking the CPU further will not lead to better performance in anywhere but benchmarks

I heard conflicting info about C-states. What should i be at? I had someone tell me they had to be enabled for it to downclock.

 

Thanks for the info. Wish I can get more performance out of my card, but it's not the greatest OC'er. 

[Jurrunio]

36 minutes ago, WaitDontSh00t said:

I heard conflicting info about C-states. What should i be at? I had someone tell me they had to be enabled for it to downclock.

C-states is necessary for any downclock. With it turned off the CPU will only change turbo boost level unless it's throttled by something else such as temperature and power limit.

[WaitDontSh00t]

7 minutes ago, Jurrunio said:

C-states is necessary for any downclock. With it turned off the CPU will only change turbo boost level unless it's throttled by something else such as temperature and power limit.

So according to my BIOS, C-states are enabled. Though I'm still running at 4.8-5.0 on idle.

[ZeroLine]

43 minutes ago, WaitDontSh00t said:

So according to my BIOS, C-states are enabled. Though I'm still running at 4.8-5.0 on idle.

C-states only serve to enable power gating (i.e. lowered vcore). To get it to downclock, you must enable speedstep, speedshift, and make sure you're using balanced power settings in windows. Make sure the minimum cpu state is 5% (default value for balanced).

[WaitDontSh00t]

7 minutes ago, ZeroLine said:

C-states only serve to enable power gating (i.e. lowered vcore). To get it to downclock, you must enable speedstep, speedshift, and make sure you're using balanced power settings in windows. Make sure the minimum cpu state is 5% (default value for balanced).

 

There must be something else interfering then, but I'm not sure what. C-states, speedstep and speedshift are all enabled. Balanced power plan and I made sure to check the minimum cpu state. 

[unclewebb]

@WaitDontSh00t As long as your C states are enabled, slowing the CPU down when it is idle makes very little difference to power consumption. When cores enter the low power C7 state, they are disconnected from the internal clock and voltage rail so they are sitting at 0 MHz and 0 Volts. A 10 core CPU can have the cores spending more than 99% of their time in C7 when idle. Slowing the rest of the CPU down is really not necessary when the C states are enabled.

 

 

The Balanced power plan controls whether a CPU slows down or not. Open the Power Options and reset your Balanced power plan to its default settings.

 

 

Speed Shift Technology was designed to be extremely responsive. A small amount of load tells the CPU to get up to full speed very quickly. Some monitoring software is slow to react to these rapid changes. Open the Task Manager and see how much load is on your CPU. Too much load when idle and your CPU will not slow down.

 

Some users think their computer is idle when it really is not. Here is an example of idle.

 

 

 A 10900KF should be able to run reliably at 5.1 GHz or 5.2 GHz all core but CPU voltage and power consumption are going to start going up significantly. It is usually not worth it for the tiny increase in performance but it never hurts to try. 

[Mister Woof]

I tried a 5.1ghz all-core OC with all power savings disabled on my 10900KF but ultimately just set it to the 5.1ghz fixed voltage needed, removed power limits, and fiddled with the active turbo multipliers. Left all the c-states and stuff as usual.

 

53x 1-5, 52x 6-7, 51x 8-10.

 

Idles down to 800mhz, but stays mostly at 51x and seems fine after an hour of RealBench, which is fine for me. YMMV

[WaitDontSh00t]

6 hours ago, unclewebb said:

@WaitDontSh00t As long as your C states are enabled, slowing the CPU down when it is idle makes very little difference to power consumption. When cores enter the low power C7 state, they are disconnected from the internal clock and voltage rail so they are sitting at 0 MHz and 0 Volts. A 10 core CPU can have the cores spending more than 99% of their time in C7 when idle. Slowing the rest of the CPU down is really not necessary when the C states are enabled.

 

 

The Balanced power plan controls whether a CPU slows down or not. Open the Power Options and reset your Balanced power plan to its default settings.

 

 

Speed Shift Technology was designed to be extremely responsive. A small amount of load tells the CPU to get up to full speed very quickly. Some monitoring software is slow to react to these rapid changes. Open the Task Manager and see how much load is on your CPU. Too much load when idle and your CPU will not slow down.

 

Some users think their computer is idle when it really is not. Here is an example of idle.

 

 

 A 10900KF should be able to run reliably at 5.1 GHz or 5.2 GHz all core but CPU voltage and power consumption are going to start going up significantly. It is usually not worth it for the tiny increase in performance but it never hurts to try. 

Thank you for the reply. I'm not so much concerned about power usage.

I mainly am just wanting it to downclock when not needing the full OC speed due to my OCD. Lol.

I just figure, why would it need to run at the OC speed of 5.0GHz 24/7, if not needed? Plus that would/should cut back on temps a bit too. Though like I was saying, for whatever reason, it will still not downclock. Usage on desktop/idle is 2%-5%. It shouldn't be staying at a constant max clock speed at low usage, should it?

[unclewebb]

3 hours ago, WaitDontSh00t said:

Plus that would/should cut back on temps a bit too.

But it doesn't. Monitoring software might be telling you that your CPU is running at 5000 MHz but the reality is, when the C states are enabled, 99% of the time your CPU cores are in a dormant state sitting idle at 0 MHz. Slowing a modern CPU down that has the C states enabled does not make a significant difference. For me, 5000 MHz vs 800 MHz when idle is a difference of 1 Watt as measured at the wall. Any difference in CPU temperature is so small that it is difficult to measure accurately.

 

20 hours ago, WaitDontSh00t said:

my CPU isn't downclocking

You have a new motherboard. Perhaps a driver needs to be updated by Asus or by Microsoft. Did you install Windows 10 to an empty hard drive or did you transfer a Windows 10 install from a previous computer?

 

I noticed in Windows 10 that after starting up or after resuming from sleep, it takes Windows a couple of minutes before the CPU starts clocking down when using the Balanced power plan. I assume that Microsoft did this deliberately to speed up the boot up process as much as possible. After that, my Asus Z490-E Strix board slows down as expected. I never use the Balanced power plan because it is kind of pointless when plugged in but it does work.