jasoncodispoti
For anyone following this thread, BIOS update 1.19 has the same issue... I am assuming that Intel has yet to provide a Microcode update for the issue to EVGA.

EVGATech_LeeM
Hi jason,
 
I asked our MB team, and while it's still not fixed, they did confirm that Intel is working on the issue.

jasoncodispoti
@EVGA any updates? I take it a Intel has not yet fixed it t?

ZoranC

EVGATech_LeeM

ZoranC
Was this ever resolved? If not when it will be?
 
I too ran into it today and this review http://tellitlikeitisnews.com/the-evga-x299-micro-motherboard-review-a-smaller-take-on-x299/ claims it is caused by BIOS default settings but goes away when overclocked (and benchmarks seem to confirm that).
 
My checks also seems to confirm this happens when using default frequency multiplier but goes away with manual settings (see this thread for details https://forums.evga.com/X299-Dark-CurrentEDP-limit-throttling-at-default-BIOS-120-settings-m3032687.aspx).

First, that review is very outdated at this point, as there have been 13 BIOS updates (and two new CPU refreshes!) for the Micro since this review was posted.  The issue reported in this thread happens under three conditions, and all conditions must be active:

• You must be using a Skylake-X CPU (possibly Kaby Lake-X) CPU
  • Cascade Lake-X CPUs do not exhibit this issue.
• You must be using an override voltage
  • Using Auto and Adaptive/Offset voltages do not exhibit this issue.
• You must be utilizing an AVX-512 load

The review referred more to "throttling" due to the default AVX options of the board, which is a different matter entirely.  Every overclock will have the same stage of overclock multiplier reduction depending on the AVX offset selected.  The issue reported in this thread is significant throttling more in line with temperature throttling; either way it's more of an artificial throttling caused by something introduced in a newer Intel microcode that happens only under those very specific scenarios.
 
The only solution to it is a custom BIOS that we created using older microcode.  Intel has not provided us with an updated microcode to resolve the issue.  As such, the only option right now is a BIOS I can send you based on the latest BIOS, but with an older microcode.  Because the microcode is older, it cannot be and has not been patched for any vulnerabilities discovered and patched by Intel since this issue was first reported in the thread.
 
Let me know if you want me to send you the BIOS, but those are the conditions under which the throttling occurs.  If you're experiencing something else, then I suggest you keep using the officially released BIOS.

I'm using X299 Dark with 1.20 BIOS, which is not latest but it is only one version behind.
 
I' m using Cascade Lake-X (i9-10900X)
 
When this issue occurs my CPU multiplier is on Auto and XTU reports my core voltage at boot is Adaptive. Thus I am not using override voltage, correct?
 
Which all indicates I should not be having this issue at all yet I am having it. And issue goes away moment I switch from Auto multiplier to manual.

glocked89
hey jason! may I ask what your VCCIN is? or whatever it is showing in hwinfo.
 
also, could you check what VCCIN is during an avx-512 workload?

jasoncodispoti
For those that are following this, from what I can tell it appears that Intel has Microsoft pushing this microcode update out now... I am not sure which update is causing the issue or when they did it, but all BIOS versions even 1.17 and the BETA BIOS provided to me by EVGA that did not previously have the issue now have the problem. 
 

jasoncodispoti
Yeah, its pretty easy to reproduce set the following in the BIOS to replicate what I have... 
 
All Core Multiplier - x44
AVX2 Offset - 0
AVX3 Offset - 1
CPU VIN - 1.800v
VCORE - 1.200v
 
Than I am running OCCT v7.1.0 selecting the Large Dataset with AVX512 only. Which should result in a core clock of 4.3GHz with the above offset however it will drop to 4.2GHz. If you dont want to use OCCT than you can use Prime95, just use current version and select large dataset. 

jasoncodispoti
Edition Windows 10 Home
Version 20H2
Installed on ‎7/‎9/‎2020
OS build 19042.685
Experience Windows Feature Experience Pack 120.2212.551.0 (whatever the hell this means LMAO) 

Exnetic
i got the same problem. avx both at 0,  No thermal throttling or power, But the Cpu still throttle some how.   im on water cooling with decent rads++

jasoncodispoti
I have confirmed this morning that BIOS update v1.25 corrected the issue mentioned in this thread. 
 
Note: 
- If you are using AVX-512 than I would highly recommend updating to this BIOS version. 
- Depending on your OC and due to the Microcode issue in previous versions you may need to re-do your OC in regards to AVX-512 datasets. 
 
Thanks EVGA for getting this update out!