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Guru3D.com » News » Intel introduces Adaptive Boost Technology for Core i9-11900K and Core i9-11900KF

Intel introduces Adaptive Boost Technology for Core i9-11900K and Core i9-11900KF

by Hilbert Hagedoorn on: 03/18/2021 05:53 PM | source: Intel | 24 comment(s)
Intel introduces Adaptive Boost Technology for Core i9-11900K and Core i9-11900KF

The 11th Gen Core series codenamed “Rocket Lake-S” will get a 4th Boost mode, labeled Adaptive Boost. Both Thermal Velocity Boost (TVB) and Adaptive Boost Technology (ABT) will be exclusive to Rocket Lake’s Core i9-11900K(F) series.

And read it well, specifically the 11th Gen Core i9 Series. And yes, that means Core i9 Rocket-Lake will have four tiers of Boost modes. A bit confusing, we agree. But I'll try and explain it.  

Three of the now four modes you are likely familiar with; there's Turbo Boost 2.0 and 3.0, and then Thermal Velocity Boost (TVB). Add to that Adaptive Boost Technology (ABT), which is a boost state applied to all cores (!) if certain power supply and if the cooling requirements are met. We're not sure yet how conditions for a PSU are measured but we'll leave that open for now.

Adaptive Boost will only be available for the Core i9 K and -KF models: In other words, only Core i9-11900K and Core i9-11900KF. With a processor temperature of less than 70°C, it achieves a Thermal Velocity Boost of 5.3 GHz on two cores. That's 5.2 GHz without TVB. If more than two cores are working, a maximum of 5.1 GHz is possible, but so far only for up to four cores if TVB activates. So four cores max.

Adaptive Boost now takes it up a notch, if a proper power supply is applied, and if temps remain below 70 Degrees  C, all eight cores can boost to 5.1 GHz. So for more than four cores the up to 5.1 GHz far exceeds the previous specification of 4.9 or 4.8 GHz.

You'll need the latest BIOS revisions to get this supported. You can see where this new Boost feature would help, multi-threaded apps and games.



Intel introduces Adaptive Boost Technology for Core i9-11900K and Core i9-11900KF Intel introduces Adaptive Boost Technology for Core i9-11900K and Core i9-11900KF




« AMD will not obstruct any workload, including crypto mining · Intel introduces Adaptive Boost Technology for Core i9-11900K and Core i9-11900KF · Cherry Adds new Ultra Low Profile Key Switches »

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ruiner13
Senior Member



Posts: 181
Joined: 2013-11-22

#5897438 Posted on: 03/19/2021 03:12 PM
intel is still very efficient for a lot of home/gaming pc usages
it's that max stress test power draw with avx on that's utterly ridiculous.
but yeah,I don't think people who choose ryzens over intel for home rigs because of power savings realize this

idle



video playback


gaming


all values are for the whole system w. rtx2080

here's a great test,albeit in Polish,telling you exactly what every tasks costs in energy
https://pclab.pl/art84541.html

you won't learn this from memes or youtube trash
this is power draw for every minute of the cpu sitting in idle


Not sure where those are from but those idle temps don’t look right. My Ryzen 5950x idles at 36-39°C with PBO enabled on an AIO liquid cooler. Also, my UPS shows ~40-60W, including having 2 monitors plugged in.

cucaulay malkin
Senior Member



Posts: 8126
Joined: 2020-08-03

#5897443 Posted on: 03/19/2021 03:26 PM
Not sure where those are from but those idle temps don’t look right. My Ryzen 5950x idles at 36-39°C with PBO enabled on an AIO liquid cooler. Also, my UPS shows ~40-60W, including having 2 monitors plugged in.

those are power draw charts
sorry they're in polish,can't translate charts

Fox2232
Senior Member



Posts: 11808
Joined: 2012-07-20

#5897481 Posted on: 03/19/2021 04:37 PM
Hmm interesting. I hope that this will be looked at with the reviews, quite curious to see if that actually does make a difference in regards to different workloads (boosting higher in gaming, more average boost across 4 cores when doing calculation workloads etc).

And I thought that actual issue was in cores boosting for too long and sustaining boost which ate much more power on average than what Spec Sheet of given CPU said.
If one gets better cooling, this thing will do what? Eat 280W under load indefinitely?

So, why is everyone talking about idle power draw of entire systems? There are way too many factors and settings which affect idle on both AMD and intel.

To the topic of idle. When I had 2700X, I did few tests. And limiting CPU to 15W resulted in all cores never going above 600MHz and actual power draw being 16.5W as CPU simply could not eat less.
With 25W limit, all core boost was 1.66GHz. 45W got all cores to 3GHz. 65W got all cores to 3.5GHz.

But 3900X gets all cores to 4GHz while it eats 65W.

And yes, with OC, both could easily eat 220W without gaining more than 125MHz above standard boost clocks. So, OC for Zen+/Zen2 was not really worth it.
But I can't complain about power efficiency when it matters.

nizzen
Senior Member



Posts: 2338
Joined: 2005-08-05

#5897733 Posted on: 03/20/2021 05:16 PM
Trying some Memory OC on my 11700k :)



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