I purchased an X299 Dark to replace a burned-out ASUS, and the board works quite well. However, I can not find any way to make the BIOS run my CPU at stock settings, by which I mean for my i9-7900X:
 
4.5 GHz non-AVX 1-core turbo / 4.0 GHz non-AVX all-core turbo
4.0 GHz AVX2 1-core turbo / 3.6 GHz AVX2 all-core turbo
4.0 GHz AVX-512 1-core turbo / 3.3 GHz AVX-512 all-core turbo
Long-term power limit 140 W
 
I updated to BIOS 1.14 and loaded the "optimized defaults", and the behavior I see is that the CPU runs at 4.0 GHz all the time, regardless of the number of active cores and AVX/non-AVX. This is very annoying, as I use my Skylake-X to develop AVX-512 software, and running 4.0 GHz all-cores means power draw in excess of 300 W. I am sure the active-cooled VRM on the Dark can handle this, but my 280 mm AIO can not.
 
Now, I see that the missing AVX turbo curve is because the BIOS has programmed ICCmax/PL4/ProcessorCurrentLimit to 1023 A, and AVX turbo is disabled when ICCmax is 256 A or greater. I can change this post-boot with Intel XTU, but I want this working automatically. I also fail to see why EVGA has done this, as the VRM firmware has already been seemingly modified to divide the current by 8 before reporting it to the CPU over SVID, effectively disabling current limits.
 
Speaking of SVID, without accurate power reporting from the VRM (i.e. not divided by 8), I can not set my CPU back to a 140 W power limit. This is also important to me, because I need to test how my software will run on production systems, which are power limited. On other motherboards by competitors, there is a BIOS toggle to enable/disable accurate SVID reporting.
 
How can I make my X299 Dark run at Intel stock settings? The overclocking capabilities on the board are clearly excellent, but I also need to be able to run stock!

Make sure you power management mode in windows is set to optimized and not high performance.

I noticed the OC Guide claims that the power limits should work when not overclocked, but this is not the case in BIOS 1.07 or BIOS 1.14. Maybe it was the case on the original 1.0 BIOS, but I can not find any way to download it. Does anybody have a copy?
 

Some settings are also automatically adjusted depends on the current operation profile. One of such examples – CPU power limits controls. These are usually available in BIOS and tweaking utility in OS, such as Intel XTU.
Unlike some other boards, on X299 DARK you will not find PL1/PL2 (power limit) settings and other power management settings for CPU in BIOS UI. These limits are maintained by BIOS itself. If you running stock settings then everything follows Intel specifications, but when you do overclocking (that is setting CPU/BCLK ratios and voltages higher than stock defaults) board will take care of power limits, to make sure CPU does not throttle, unless you hit temperature limits.

 
https ://xdevs.com/guide/e299ocg/
 
EDIT: I found the links to all the old BIOS revisions in the OC Guide. Is it safe to downgrade BIOS using the flash tool?

GGTV-Jon
You do have a 3 position bios switch, you can try different bioses

Sure, but if I brick one of them, it's gone for good. There's no BIOS flashback function.

kingofblog

GGTV-Jon
You do have a 3 position bios switch, you can try different bioses

Sure, but if I brick one of them, it's gone for good. There's no BIOS flashback function.

Not true. You can do this to restore a bad flash.

If you head over to The University of YouTube. Go to Team EVGA. Search for How to: Fix a Corrupted Motherboard BIOS or use this LINK if it works, lol. Ray from EVGA will actually brick a X299 Dark boards bios and show us how to bring it back to life. Fun to watch.

Maybe you should look at a Server Class Motherboard for your needs.

Intel Turbo Setting is Default Setting.
Little confuse Turbo higher for single core than for all cores, but that's default.
X299 Dark is build for people who want immediately to pull max performance from i9-7900X and compensate if he is slower in single threaded applications. 
Now maybe we even could say that EVGA win this time with high end motherboards.
ASUS increase so much price that market have much less experience of people with RVIE.
From other side one fantastic amazing Rampage VI Apex is lower class and that board is below Dark. She don't even have Pre Mounted I/O Shield like 250$ worth ROG Motherboards. Price of Apex is below 350$ and she could be find very cheap but first impression is lower class, cheaper level than EVGA X299 Dark.
Definitely EVGA done much better job with X299 than X99, definitely.
If upgrade from i7-5960X to i9-7900X worth because more cores and new generation than Dark is one more reason, unusually premium mobo.
After I saw price of 300$ in some moment I checked almost all video clips and I was surprise how they build nice motherboard.
If someone want specific EVGA motherboard is very hard to find better moment than now.
 

Cool. Cool. Imo we should call up EVGA and ask them to add this setting in the next bios release.