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X670 resource


ill use this thread to collect some new test bioses for the boards, maybe also to explain some less understood options

to disable cores ccd go here and choose ccd xx bit map down core.
each ones stand for an enabled core
best to disable from the back, ie:
instead of 0011000
after selection press downcore apply changes or discard if made mistake


7950x not boosting pass 5.5G -> check that CStates is not disabled
Detailed Explanation on CState Boot Limiter

Test BIOSes:

X3D OC Preset for those MB with asynch BCLK Support: (for simple slight perf boost for X3D)

DOCP/EXPO Tweaked: (for simple timings tightening)

strixe-e 1515 

strixe-f 1515 

strix e a 1515 

crosshair hero 1515 

crosshair gene 1515 

crosshair extreme 1515 

creator 670 1515

creator b650 1515

strix 650E I

strix 670 itx



for crosshair and strix e-e:

explanation of segment2 Loadline:


customize a heterogenous loadline for a dual segment workload range.

example above shows loadline=L6 when current is in range of 0~40A, and Level4 when current is above 40A.




Adds for x3d

dynamic ccd priority switch with core flex, os / driver agnostic so win10 win11 ok



Algo as follows:
If condition reached and ccd0 specified, then check current mem/cache activity > threshold and hysteresis reached, if fulfilled then switch
If condition reached and ccd1 specified, then check current mem/cache activity <=threshold and hysteresis reached,, if fulfilled then switch
Default hysteresis =4

Can combine multiple algos for ccd priority so combinations are wide

works on non x3d too but of course senseless on it. detailed explanation here.

2,403 REPLIES 2,403

Please read carefully. One time extensive training after getting 1516 with agesa 

my 64G pair took 11 minutes. 

That is insane 😑

@ksenchy wrote:

That is insane 😑

Doesn't need to be an issue. As stated already AMD has included a "full intense training" option called "Nitro". If you extend it to the maximum to get most-accurate training results it might take as long as some people describe it here. Typically it's much shorter and by default the board is deciding on its own whether Nitro-mode needs to be enabled. On most memory combinations the board will just run the shortened "quick" training. For example on my 4x165GB DDR5-6000CL30 the initial training after flashing required less than 1 minute. Since I am using memory context restore subsequent boots require about 5-8s to POST. Not much longer than on DDR4 boards.

Nitro mode might provide the last bit of stability if you're really at the edge of physics - either being limited by board layout, memory modules, signal integrity etc. So typically we are not talking about DDR5-6000 configurations but rather DDR5-6400+ setups here. Sure exceptions might happen depending on board/memory combinations but this is not the regular use case unless you manually enable Nitro mode or your board is forced to do so.

Also it's not entirely true that this will happen only one single time. Re-training is required if re-applying training data via MCR fails or if any parameters change (like timings, clock rate, voltages etc.). Also re-training will re-occur on power loss (when power supply stopps supplying 5V SB voltage). So some people will have to stop using a switchable power bar or other ways of disconnecting AC after switching of the PC to avoid re-training on each power-up.

I see. Looks like my board did the quick one which took like 45s

Where is this NITRO setting? I don't found it (ProArt X670e)

Level 11

I didnt mind initial training but with nitro on and MCR on I get a 4-6 second post before windows starts on my 64G kit. Score!

Level 11

Are you guys doing anything special to get such quick boot times? Even on 1516 mine is not much quicker than before. 

Level 11

Did you enable MCR, Power down and Nitro?


What is your kit?

Yes for MCR, I dont know of these other settings, I have the X670E - E Gaming mobo. What does nitro and power down do? 

Level 8

1516 still can't post expo. Only a couple bios versions over the last 8 months have been able. I didn't know I was purchasing a top of the line motherboard and cpu to have the privilege to be a free alpha tester for ASUS. Glad I can donate my time to help ASUS save money.