bclk overclocking help

[neurotix]

Hello,

 

I am trying to overclock my 9950x on a Gigabyte Aorus X670 Elite AX. I still have the problem where in hwinfo64 I can see my 1st CCD cores hitting 5650 or 5700MHz using PBO+200 at idle,  however when put under any load (usually 3dmark11) the cores go to their default boost which is 5450MHz.

 

I decided to set PBO to auto and try overclocking using bclk 104Mhz, I lowered my memory multiplier so it would be 7600 (which I have stable). 104x54.5 is 5668MHz or something. Voltage was auto.

 

I tried this more than once and the system refused to post. I'm a novice at bclk overclocking and never really done it. Do I need to go into AMD Overclocking in the bios and adjust the uclk and memclk or something? Are there secondary voltages for the bclk that need to be raised? I'm stumped.

 

Any help would be great, I know @J7SC_Orion knows how. Thanks in advance.

Edited September 4 by neurotix

[J7SC_Orion]

8 hours ago, neurotix said:

Hello,

 

I am trying to overclock my 9950x on a Gigabyte Aorus X670 Elite AX. I still have the problem where in hwinfo64 I can see my 1st CCD cores hitting 5650 or 5700MHz using PBO+200 at idle,  however when put under any load (usually 3dmark11) the cores go to their default boost which is 5450MHz.

 

I decided to set PBO to auto and try overclocking using bclk 104Mhz, I lowered my memory multiplier so it would be 7600 (which I have stable). 104x54.5 is 5668MHz or something. Voltage was auto.

 

I tried this more than once and the system refused to post. I'm a novice at bclk overclocking and never really done it. Do I need to go into AMD Overclocking in the bios and adjust the uclk and memclk or something? Are there secondary voltages for the bclk that need to be raised? I'm stumped.

 

Any help would be great, I know @J7SC_Orion knows how. Thanks in advance.

 

1.) Are you sure you are doing 'bclk' instead of 'eclk' ?

2.) With bclk, your PCIe 4.0 GPU (and perhaps NVME drives) will likely not post. PCIe 3.0 setting / older GPUs might. Try 102.75 and see what happens. With eclk on most Aorus boards, the RAM and PCI bus will stay at 100 and thus not be affected, only the CPU.

3.) Make sure to disable all CO and also disable boost override and try 102.75. You might even have to go into negative boost override, depending how far you push the extra MHz. For example, if you know that your 7950X/3D can hit max effective 5750 MHz, multiply that by 102.75 and subtract 5750. The resulting number should be a safe negative boost override from which you can experiment. Leave CO disabled until you have the boost override 'safe' value locked in and tested.

[neurotix]

Thanks so much buddy. And I don't see an eclk option anywhere in my BIOS. It was base clock at the top of the tweaker menu.

 

Should I be disabling PBO as well, because of the 5750 multiplier thing?

[J7SC_Orion]

7 hours ago, neurotix said:

Thanks so much buddy. And I don't see an eclk option anywhere in my BIOS. It was base clock at the top of the tweaker menu.

 

Should I be disabling PBO as well, because of the 5750 multiplier thing?

 

I have the PBO enhancement at 90L5 for all profiles and clocks (system has good custom water-cooling)

[neurotix]

Hey, because of the bclk being tied to PCIE and southbridge, I think I am actually wanting to do eclk overclocking. Can you please point me to a good beginner's guide? Thanks

[J7SC_Orion]

On 07/09/2024 at 11:54, neurotix said:

Hey, because of the bclk being tied to PCIE and southbridge, I think I am actually wanting to do eclk overclocking. Can you please point me to a good beginner's guide? Thanks

 

This is what I used for my first eclk (see timestamp YT). Make sure though to load 'default values' anytime you go / to from synchronous to asynchronous in the bios / tweaker menu

 

 

 

[neurotix]

23 hours ago, J7SC_Orion said:

 

This is what I used for my first eclk (see timestamp YT). Make sure though to load 'default values' anytime you go / to from synchronous to asynchronous in the bios / tweaker menu

 

 

 

Thanks so much for this! Question though- do you have to enable EXPO for this to work? How do I still retain my 7600MHz cas36 RAM overclock?

[neurotix]

I can't even find eclk on my Aorus X670 Elite AX.

 

Under the base clock setting at the very top there's no option for manual and expo, just the bclk speed.

 

If I go to EXPO and turn it on there's a few options but none are or give eclk.

 

Where do I find it in this BIOS?

[J7SC_Orion]

Depends on your board (some do not have eclk). On the Aorus 670E Master see the pic below with the arrow > switch to 'enabled' from 'disabled', after booting back in with 'default bios values'...always do that extra step before going back and forth between enabling and disabling that one. Re. memory, I do not own a single piece of EXPO RAM over four gens of AMD; I just always use Intel XMP and/or do manual values. However, EXPO or no EXPO will not make a difference with eclk (it leaves FCLK and the memory setting as is).

 

[neurotix]

The Gigabyte didn't have it anywhere in it's options, there was nothing like in the screenshot you have.

 

However, I got my ROG Strix X670E Gaming Wifi back from a socket repair and we put it in today and it supports eclk. So I have a question.

 

Would it be reasonable to set eclk to 104 and CO to +5 all cores as a starting point? I'm really a novice with CO overclocking and it's like black magic to me. I have really no clue how to figure out the values or test cores individually, do I run Prime95 or something with CO on and see which cores fail and then give them more voltage?

 

I was also thinking of just a straight CO overclock, no eclk, is setting all cores to -18 then running P95 and see which cores fail and raise the values til they don't?

 

Thanks Orion, I really appreciate your help.

[Sir Beregond]

My experience with curve optimizer was that it hardly ever failed stress tests with load on it. It was usually during the idle part of the voltage curve where if it was undervolted too much it would freeze/crash.

 

On Zen 3 anyway.

[neurotix]

Yeah I kind of remember you switching to just regular PBO because of that.

 

I can't have it crashing on me at idle randomly given I run folding in Linux pretty much 24/7 on the GPU, need the CPU stable for that.

Edited September 13 by neurotix

[neurotix]

Hey @J7SC_Orionthanks so much, I am going to rep you up.

 

I did 104 eclk with +10 all core and now my chip is hitting 5500-5600 in single thread benches. It still has the odd problem where at I see it hitting 5750 or even 5800 at idle in hwinfo64, but under a load (Fire Strike, 3dm11) it doesn't hit those high idle frequencies, it does like 200-300 less. If you have any idea why my chip clocks down during a single thread load, please let me know.

 

Should I try 107 eclk? If so, how much voltage should I add?

 

Additionally, it might not work anymore but there's a specific Ryzen Cinebench tweak: do manual per-CCX overclocking, set it to like 52 first CCD and 48 second CCD with like 1.3v, and run Cinebench in realtime mode. You should get a score that is a few thousand points higher than running it using PBO or CO. Give it a try.

 

EDIT: If I aim for 107 eclk what amount of voltage should I use? 25? Even with it at 104 just now with +10 all cores and trying to bench Fire Strike, it froze up before running the bench and the whole program crashed, Steam wouldn't allow me to reopen it even after killing the Futuremark tasks, I had to reboot but then decided to go back to folding in Linux with eclk on auto and no extra core voltage.

Edited September 13 by neurotix

[J7SC_Orion]

On 13/09/2024 at 13:59, neurotix said:

Hey @J7SC_Orionthanks so much, I am going to rep you up.

 

I did 104 eclk with +10 all core and now my chip is hitting 5500-5600 in single thread benches. It still has the odd problem where at I see it hitting 5750 or even 5800 at idle in hwinfo64, but under a load (Fire Strike, 3dm11) it doesn't hit those high idle frequencies, it does like 200-300 less. If you have any idea why my chip clocks down during a single thread load, please let me know.

 

Should I try 107 eclk? If so, how much voltage should I add?

 

Additionally, it might not work anymore but there's a specific Ryzen Cinebench tweak: do manual per-CCX overclocking, set it to like 52 first CCD and 48 second CCD with like 1.3v, and run Cinebench in realtime mode. You should get a score that is a few thousand points higher than running it using PBO or CO. Give it a try.

 

EDIT: If I aim for 107 eclk what amount of voltage should I use? 25? Even with it at 104 just now with +10 all cores and trying to bench Fire Strike, it froze up before running the bench and the whole program crashed, Steam wouldn't allow me to reopen it even after killing the Futuremark tasks, I had to reboot but then decided to go back to folding in Linux with eclk on auto and no extra core voltage.

 

...no idea because I do not know your board, or the specific chip quality. I used the Skatterbenecher video I showed above to set up my first 'eclk'.