Motherboards Getting UEFI Update To Support Intel Core i9-9900KS 127W TDP Processor

Motherboard manufacturers like ASUS and ASRock have posted up new UEFI/BIOS updates that adds support for Intel’s upcoming Core i9-9900KS processor. The Intel Core i9-9900KS 8-core, 16-thread processor has a base frequency of 4.00 GHz with an all core max turbo frequency of 5.00 GHz. Pricing has not been announced, but we expect it to be slightly higher than the Intel Core i9-9900K that has a recommended customer price of $488-$499.

9900K Regular Nitrogen

The other little interesting detail that has been discovered by looking at the ASUS support page is that they listed the TDP of the 9900KS as being 127 Watts. This is the first time we’ve seen any public numbers about the TDP of the 9900KS. We all knew that the 9900KS would use more power than the regular 9900K and now we have that confirmation. The good news is that anyone buying a 9900KS will likely be using liquid cooling and won’t be bothered by this news.

It also looks like a good number of Intel Z390 boards will be supporting the 9900KS as we found over 10 boards from ASRock and ASUS that already have UEFI support for the 9900KS now.


  • Z390 Phantom Gaming X
  • Z390 Taichi
  • Z390 Steel Legend
  • Z390M Pro4


  • ROG Maximus XI Apex
  • ROG Maximus XI Code
  • ROG Maximus XI Gene
  • ROG Maximus XI Hero
  • ROG Maximus XI Hero (Wi-Fi)
  • ROG Maximus XI Extreme
  • ROG Strix Z390-E Gaming
  • ROG STRIX Z390-F Gaming