Possible to lower 12900ks base clock ??

[digitaldreams]

Looking to the future beyond my 12900ks I see the 13900kf, 13900ks and a possible refresh lga1700 later this year (or not). Note I'm not just considering my PC (sig) but my sons too who will inherit my kit when I improve my motherboard.

Getting a little more performance from video encoding etc, lowering idle power consumption and later moving to DDR5-5600 from DDR4- 3200/3600 with a newer Z790 motherboard make the 13900kf an interesting first move forward. The 13900ks seems of little or negative value with its crazy heat and power consumption.

The 13900kf features and benefits raise a question though. With my current system, could I easily lower the base clock frequency of my 12900ks in the ASUS bios without affecting any other settings ?. The pc is sometimes left downloading large files or just internet browsing and a power drop would be great !.

 

[digitaldreams]

The base clock of 3.4 Ghz should be very efficient, I don't think you would want, or need to lower this any further. If you did, I suspect the responsiveness and gaming performance would drop off considerably. The easiest way to manage the power and clocks is just to change the power limits in the BIOS, you may be interested in this article:

A Lighter Touch: Exploring CPU Power Scaling On Core i9-13900K and Ryzen 9 7950X

www.anandtech.com

I assume you're aware that forcing the CPU to stay at base clock means disabling turbo mode. With high-end CPUs it can help with the high power consumption and voltages in some circumstances, but disabling turbo mode is definitely the sledgehammer solution and can be pretty impactful on performance.



It should automatically manage the clocks and power draw according to demand, unless you have a high performance power profile enabled, or a custom overclock. If your CPU is pegging multiple cores at high clocks and using a lot of power with such menial tasks then I'd try updating the LAN/WIFI and chipset drivers.

Yet the lower base clock of the 13900kf seems to have lowered the idle power somewhat compared to the 12900ks !. I'm not aware of anyone reporting lower responsiveness in the 13900kf due to lower base clock (virtually identical technologies too), I expect gaming would usually result in frequencies higher than base.... Thanks for the link, will look asap

 

[digitaldreams]

Yet 13900KF TDP PL1 is 125W vs 12900KS 150W ?. Suggests the 13900 does use less power at idle !