jasoncodispoti
So I have been messing around with the BCLK and no matter what I do I cant seem to get the computer to POST after changing the BCLK... It beeps a few times reboots a couple of times and than I just get a blank screen with the code FF on the display (on motherboard). Anyone have any ideas as to what FF means? Hoping that it will be helpful in pin pointing what I need to adjust to get BCLK to work. 
 
Thanks! 

EVGATech_JoseR
I'm guessing since you're able to change the bclk value the system is working fine with stock settings and only produces the FF after you have saved and exited the BIOS or no?
 

GGTV-Jon
Why do you feel you need to adjust the BCLK, what are you trying to achieve?

bcavnaugh

jasoncodispoti

bcavnaugh
I have always kept mine at 100.
What Motherboard(Model), CPU, and Memory(Model#) do you have? 

Motherboard, EVGA X299 Dark
CPU, Intel Core i7-9800x
Memory, Corsair Dominator Platinum 4x8GB 3200MHz C16

Corsair Dominator Platinum 4x8GB 3200MHz C16 (Model#) Not all models are the same.
Some Memory when setting the XMP Profile Changes the BCLK Setting.
You may want to Set the BCLK to 100 and then set Memory to use the XMP Profile 1 save and restart and go back into the Bios and see if it changed the Default BCLK Setting.

jasoncodispoti

EVGATech_JacobB
Here is an FAQ about what different POST Codes mean: POST Codes

FF in your case is generally just indicative of a failure.
 
-Jacob B.

LOL, I dont know why, but when I read this I just busted out loud laughing... Thanks for the info! Looks like I have got some tinkering to do.  

TiN_EE
Unlike consumer platforms (skt LGA11xx), BCLK overclocking on HEDT is very limited, usually just 3-5% from nominal either way. E.g. frequency like 110MHz will never work on Skylake-X CPU. This is all because internally BCLK is linked to DMI/PCIe clocks and those need to be within nominal range to function. Once they go out of spec, CPU loosing connection to PCH and whole thing sits silly in confusion, showing you last possible message "FF" on 80Port, which means "Fully Failed". Any X299 motherboard will do same, this is inherent to CPU/PCH design.
 
It is not a big problem however, as all HEDT LGA2066 CPUs are completely unlocked and you can overclock CPU, memory and mesh/ring clocks using ratios just with 100 MHz BCLK. Sometimes if you need that last 25MHz, you can apply fractional bump on BCLK, like 100.5 MHz to get desired clocks. Going over 103MHz or below 97MHz would cause lots of problems to audio/network/PCIe devices.
 

TiN_EE
Unlike consumer platforms (skt LGA11xx), BCLK overclocking on HEDT is very limited, usually just 3-5% from nominal either way. E.g. frequency like 110MHz will never work on Skylake-X CPU. This is all because internally BCLK is linked to DMI/PCIe clocks and those need to be within nominal range to function. Once they go out of spec, CPU loosing connection to PCH and whole thing sits silly in confusion, showing you last possible message "FF" on 80Port, which means "Fully Failed". Any X299 motherboard will do same, this is inherent to CPU/PCH design.
 
It is not a big problem however, as all HEDT LGA2066 CPUs are completely unlocked and you can overclock CPU, memory and mesh/ring clocks using ratios just with 100 MHz BCLK. Sometimes if you need that last 25MHz, you can apply fractional bump on BCLK, like 100.5 MHz to get desired clocks. Going over 103MHz or below 97MHz would cause lots of problems to audio/network/PCIe devices.
 

GGTV-Jon
This might help you - https://xdevs.com/guide/e299ocg/#ocskx
The issue with just throwing numbers at the BCLK is that it's speed has a wide affect - Memory, Mesh, CPU core speed ect. Gone are the days of old where you bump the FSB / BCLK and get a nice little core bump
 
I actually do have mine bumped but it is something like 100.50, what numbers have you tried to run?
 
What bios version are you running?