Intel announced plans to launch its eight-core Core i9-9900KS processor along with its performance specifications quite a while ago, but the company did not disclose the TDP. As the processor will have an all-core base frequency of 4.0 GHz and an all-core turbo of 5.0 GHz, this number is vitally important for motherboard support. This week ASUS released a new BIOS version for some of its motherboards that adds support for the Core i9-9900KS and revealed the number. 

The Intel Core i9-9900 processor has a base frequency of 4.0 GHz as well as an all-core turbo frequency of 5.0 GHz, which essentially makes it an eight-core Coffee Lake Refresh silicon binned to hit higher clocks when cooling is good enough. As it turns out, in a bid to enable higher frequencies, Intel has increased the TDP all the way to 127 W (according to a listing at, which is considerably higher when compared to any existing (or historical) Intel’s CPU for mainstream platforms.

One thing that should be noted is that Intel only guarantees base frequency at a rated TDP (e.g., 4.0 GHz at 127 W), so everything above base (i.e., turbo clocks) means a higher power consumption. As a result, not only will the Core i9-9900KS require a motherboard that can supply 127 W of power and a cooling system that will dissipate 127 W of power, but it will need an advanced platform to hit the turbo clocks. Fortunately, there are plenty of high-end motherboards and coolers around to support the Core i9-9900KS. 

Intel 9th Gen Core 8-Core Desktop CPUs
AnandTech Cores Base
All-Core Turbo Single
Core Turbo
i9-9900KS 8 / 16 4.0 GHz 5.0 GHz 5.0 GHz UHD 630 2666 127 W ?
i9-9900K 8 / 16 3.6 GHz 4.7 GHz 5.0 GHz UHD 630 2666 95 W $488
i9-9900KF 8 / 16 3.6 GHz 4.7 GHz 5.0 GHz - 2666 95 W $488
i7-9700K 8 / 8 3.6 GHz 4.6 GHz 4.9 GHz UHD 630 2666 95 W $374
i7-9700KF 8 / 8 3.6 GHz 4.6 GHz 4.9 GHz - 2666 95 W $374

One thing to keep in mind is that the information about the TDP of the Core i9-9900KS comes from a third party (albeit a very reliable one), not from Intel. Intel has confirmed that the new Core i9-9900KS will be released in October.

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Source: ASUS

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  • Eris_Floralia - Wednesday, September 18, 2019 - link

    Because maximum power would be about the same for 9900KS as a 5GHz 9900k.
    While CML-S 10+2 would pull about 250amp for MaxIcc.
  • boozed - Wednesday, September 18, 2019 - link

    That packaging isn't very space efficient
  • Dug - Wednesday, September 18, 2019 - link

    I know this will require more power than AMD, but it would be nice to see full power used from wall with all components. It seems AMD has much higher power usage at idle or light usage. So if you avg out a day of browsing, playing some games, doing some content work, including taking breaks away from computer, what would the avg power look like between systems?
  • zealvix - Thursday, September 19, 2019 - link

    "It seems AMD has much higher power usage at idle or light usage"

    Isn't that only for those x570 PCIe 4 boards?
  • Dug - Friday, September 20, 2019 - link

    Yes. If you are buying new, there should be no reason not to to get an x570.
  • peevee - Thursday, September 19, 2019 - link

    10% increase in performance (at best, if not limited by buses etc) for 33% increase in power (KS vs KF). As expected on the high end of the frequency curve. Sad that they essentially are stuck where 45nm had reached 10+ years ago...

    It is time for venerable Von Neumann's invention to go to greener pastures. I doubt today's Intel managers understand that though - they are all about "diversity and inclusion", and marketing, not about innovation.
  • Arbie - Thursday, September 19, 2019 - link

    Diversity and inclusion may not be the roadblocks to innovation that you seem to imagine. The Nazis eliminated both and got the opposite result: secondary school / university academic levels, and technical innovation, dropped radically under their rule. While it is thoughtful of you to drag in coded support for anti-liberalism and racism, we probably don't need to try those again.

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