Mitac Mainboard don't power up my i7-10700 over 50% performance and wattage.

[ni_ls]

Dear LTT-Community,
I bought a Mainboard Mitac PH12CMI-Q470-12v and I like it.
Sadly, I can not get my cpu i7-10700 65w nearly to its performance maximum, barely I get 50% of the performance(like 2300 points in xtu 2.0, 6600 points in cinebench r23). As of the datasheet the cpu should be supported. But I cannot raise the power for my cpu higher then about 32w as of intels xtu while stress testing like running a benchmark.(tested with cinebench and xtu 2.0) The Core voltage drops to 0.85v,clockspeed Go 2.60ghz then. I measured 59.8w power draw while stress testing, at the ac side of my 210w power supply. Also at the 12v dc jack at mainboard side I measured a steady 12.04v while stress testing. So Power supply shouldn't be the bottle neck. I also charged the power supply up with heavy capacitors like 13.600uF. Didn't change a thing. Thermal throttling did not happen by the way. The maximum temperature xtu red was about 52°C at the end of a stress test. Intels XTU tells me that there is neither thermal throttling, nor power limit throttling nor motherboard VR throttling active while stress testing. But the current/EDP limit throttling is active all the time, even in idle. 
 
Anyhow, does anyboday has still an idea how to power up the system to get the advertised 65w cpu to its full perfomance?

Best Regards, Niels

Edited January 24, 2022 by ni_ls
Added Info

[IkeaGnome]

That board only has a 4 pin CPU power connector. 

I'd be willing to bet you're power throttled. 

https://www.anandtech.com/show/16343/intel-core-i710700-vs-core-i710700k-review-is-65w-comet-lake-an-option/2

The 10700 isn't actually a 65W CPU. 

[ni_ls]

12 minutes ago, IkeaGnome said:

That board only has a 4 pin CPU power connector. 

I'd be willing to bet you're power throttled. 

https://www.anandtech.com/show/16343/intel-core-i710700-vs-core-i710700k-review-is-65w-comet-lake-an-option/2

The 10700 isn't actually a 65W CPU. 

Okay, xtu tells me, that the CPU is Limited to 65w and 60a. But the whole mainboard stays below that numbers.

I agree, that there must be some kind of Power limitation, but where and why… I‘m not ready to give up

[IkeaGnome]

31 minutes ago, ni_ls said:

Also at the 12v dc jack at mainboard side

Can you clarify what all you have plugged in for power delivery? When you say DC jack, I think of something like this and don't see one on the motherboard.

I see a 4 pin CPU for power, but no where else to plug other power connectors in. 

If everything on that board is trying to share that 4 pin CPU plug, it makes sense for you to see low voltages at the CPU.

@JurrunioSorry to keep bugging you. Is there something I'm missing here? 

https://www.mitacmct.com/IndustrialMotherboard_PH12CMI_PH12CMI

[ni_ls]

2 minutes ago, IkeaGnome said:

Can you clarify what all you have plugged in for power delivery? When you say DC jack, I think of something like this and don't see one on the motherboard.

I see a 4 pin CPU for power, but no where else to plug other power connectors in. 

If everything on that board is trying to share that 4 pin CPU plug, it makes sense for you to see low voltages at the CPU.

@JurrunioSorry to keep bugging you. Is there something I'm missing here? 

https://www.mitacmct.com/IndustrialMotherboard_PH12CMI_PH12CMI

Yes there is a 5.5/2.1mm dc jack like you showed soldered to the board. Dont know, why it’s missing in the pictures. It shares the same lines as the 4pin („atx“) plug. And yes, that is the one and only Power supply. I soldered my dc-wires directly to the solderpoints of the dc jack and measure the voltage at the 4pin connectors.

[ni_ls]

13 minutes ago, IkeaGnome said:

Can you clarify what all you have plugged in for power delivery? When you say DC jack, I think of something like this and don't see one on the motherboard.

I see a 4 pin CPU for power, but no where else to plug other power connectors in. 

If everything on that board is trying to share that 4 pin CPU plug, it makes sense for you to see low voltages at the CPU.

@JurrunioSorry to keep bugging you. Is there something I'm missing here? 

https://www.mitacmct.com/IndustrialMotherboard_PH12CMI_PH12CMI

 

[ni_ls]

Picture

[ni_ls]

Yes, found the Problem. Bios reset did the job. The IccMax was reconfigured automatically to 140a as I could see in xtu afterwards. Can pull off 125w for turbo boost and even more than 65w over time now and surely clockspeeds beyond 4ghz even while multicore benchmarking. Seems that the board was used and configured before with a different cpu. The only thing that I'm curious about is that the current limit throttling is still active about 90% of the time in idle. If I drive the cpu to the power limit, the current limit throttling stops in favor of the power limit throttling. Very weird....