A770 is limited by Power Limit 4 (overcurrent protection)

[TheWonderfulPie]

When playing any game with my A770, I notice in HWiNFO that it is throttled by the PL4, which is a current limit. Normally, PL4 is here for overcurrent protection, but it is not normal that it is triggered at only 1.035V and a stable 195W. The consequences of being throttled like this is that games won't use the full capacities of the GPU; It will report as being at 100% load and drawing ~195W while the Power Limit 1&2 are at 228W with a ton of thermal headroom

I'm pretty sure it's the same issue than this article , even though I'm not trying to overclock anything, and I don't have an A380. I'm on the beta drivers right now, but the issue happens also on the stable ones. I've already tried a DDU.

Please don't tell me that "it's normal for the GPU to have voltage limits, because otherwise it could be damaged", of course it does, but at 1.035V, no it's not. PL4 is here for overcurrent protection, most likely for a short circuit or something. PL4 is a hardware-fixed limit of 800W, and I never asked my GPU to hit this 800W, and it's nowhere near this wattage when in my case, it's throttled by that PL4.
I've linked the Intel Scan Report, let me know if you'd need anything else to solve the issue

[Esteban_Intel]

Hi @TheWonderfulPie,

Just wanted to let you know that we are now investigating this issue under Bug ID 22018515546 (this is an internal database, but you can use this Bug ID to ask for an update).

Once we come to a conclusion in our debugging process, I'll let you know the results.

[Crimson-Hawk]

I have a laptop with Intel Arc A730M GPU, the PL4 reported by HWINFO is 100W, but this limit is somehow triggered when its only using 75W, with tons of thermal headroom

[Boladi]

I get this Current (PL4) problem on my acer a770 when running pugetbench for creators for premiere pro.  So I guess it happens in Premiere Pro at least.  It's easily recreated attached is my log.  System info is in the log

I'm using driver 31.0.101.5534

[Esteban_Intel]

Hi @Boladi 

After our investigation we found that the issue is on HwInfo's side. for Arc A-Series add-in cards, PL4 is correctly set to 800W. And from your screenshot, the max GPU power was 155 W; which is less than 800W. However, HwInfo still raised the "Current (PL4)" flag. So, seems HwInfo is miscalculating the check of when the max GPU power reaches PL4.