ASUS, ASRock and MSI bring ‘overclocking’ to H470/B460 and non-K Intel Core CPUs

Published: May 28th 2020, 08:29 GMT   Comments

A method to increase the performance of the non-K Intel Core processor on B460 and H470 motherboards is being advertised by motherboard makers. 

Technically… this is not overclocking

Yes, the non-K Intel processors will still remain, so to speak, locked. However, by adjusting the time these processors remain in an increased power load scenario, it is possible for the core clock frequency to remain higher for a longer period of time. This method is not new, it has been widely used (or some say abused) by motherboard makers for the “Z” series. However, it now becomes mainstream for mid-range motherboards as well.

What is TDP, PL1, PL2 and Tau

There is a reason why Intel Core processors are almost always consuming more power than official TDP values. The TDP (thermal design power) only refers to the base frequency, which most of the Intel Core processors never run at. Modern Intel Core processors will automatically run at turbo frequency and as a result, this increases the power consumption above official TDP figures.

The maximum power limit is defined by PL1 and PL2. The PL1 basically copies the TDP, while PL2 is the maximum allowed power limit. This value has changed for Comet Lake-Series. The Core i9-10900K has a PL2 of 250W which is a 2.0 multiplier, as opposed to Coffee Lake-S’ (9900KS) of 1.25. Intel has not released the whitepaper for Comet Lake-S yet – only a datasheet for Xeon Series has been published (attached below for visual presentation). Both PL1 and PL2 can be changed by motherboard makers.

More importantly, the duration turbo state is allowed to continue is defined by Tau. For the 10th Gen Core K-series, this value is 56 seconds. In reality, Tau is just a recommendation. Motherboard manufacturers can set this value to, let’s say, 999 and basically allow the turbo to persist for an infinite time.

By adjusting Tau, PL1 and PL2 manufacturers are allowed to keep Intel Core processors run at higher power for a longer period of time. This feature is being used by manufacturers with B460 and H470 motherboards. These are the chipsets designed for non-K Core processors (overclocking locked). It means that despite not being able to change the clock of the processor, an increased power limit will still make them run with at higher turbo frequency.

ASRock BFB technology modifies the PL1 to 125W (from 65W), while MSI’s PL1 increases it up to 255W. In MSI’s case, this essentially means all-core turbo frequency is a new base frequency. Although only two motherboards have a 255W PL1 setting. ASUS has one motherboard up to 210W, while the rest has a 125W PL1 setting. ASUS has not released the expected frequency for Intel processors when this technology is applied, but ASRock and MSI did, and this is illustrated in the chart below.

Intel non-K Core Processor PL1/PL2 “Overclocking”
SKUBase ClockTurbo Boost Max 3.0All Core TurboPL1/PL2
2.8 GHz
5.1 GHz
4.5 GHz
3.7 GHz
3.9 GHz
4.4 GHz
4.45 GHz
2.9 GHz
4.8 GHz
4.6 GHz
3.9 GHz
4.03 GHz
4.5 GHz
4.6 GHz
3.3 GHz
4.4 GHz
4.1 GHz
4.4 GHz
4.4 GHz
4.1 GHz
3.1 GHz
4.2 GHz
4.2 GHz
ASROCK125W: H470 Steel Legend, H470 Phantom Gaming 4, H470M Pro4, H470M-ITX/ac, B460 Steel Legend, B460 Phantom Gaming 4, B460 Pro4, B460M Pro4, B460M Steel Legend, B460M-HDV, B460M-ITX/ac (list does not include Z490)
MSI255W: MAG B460 Tomahawk, MAG B460 Mortar (WiFi)
135W: MAG B450M Bazooka
All clocks in comparison to 10900 5.2 GHz in Thermal Velocity Boost mode

Intel package power settings for last, current and upcoming (rumored) architectures:

Intel PL1/PL2/Tau Values
VideoCardz.comCoffee LakeComet LakeRocket Lake
Intel CorePL1PL2TauPL1PL2TauPL1PL2Tau
8-core 95W (11700K-class)95W215W56s
6-core 95W (11600K-class)95W173W56s
8-core 65W (11700-class)65W251W28s
10-core 125W (10900K)125W250W56s
8-core 125W (10700K)125W229W56s
6-core 125W (10700K)125W182W56s
10,8,6-core 65W (10900-10500)65W125W?
8-core 127W (9900KS)127W159W28s
8-core 95W (9900K)95W119W28s

Based on HardwareLuxx chart

ASUS APE (ASUS Performance Enhancement)


MSI Power Limit Setting

Source: Chiphell, Benchlife, CoolPC, ASRock

Comment Policy
  1. Comments must be written in English and should not exceed 1000 characters.
  2. Comments deemed to be spam or solely promotional in nature will be deleted. Including a link to relevant content is permitted, but comments should be relevant to the post topic. Discussions about politics are not allowed on this website.
  3. Comments and usernames containing language or concepts that could be deemed offensive will be deleted.
  4. Comments complaining about the post subject or its source will be removed.
  5. A failure to comply with these rules will result in a warning and, in extreme cases, a ban. In addition, please note that comments that attack or harass an individual directly will result in a ban without warning.
  6. VideoCardz has never been sponsored by AMD, Intel, or NVIDIA. Users claiming otherwise will be banned.
  7. VideoCardz Moderating Team reserves the right to edit or delete any comments submitted to the site without notice.
  8. If you have any questions about the commenting policy, please let us know through the Contact Page.
Hide Comment Policy