AMD Precision booster.

[fendertele]

Hey folks.

Hoping can help me out with this precision booster situation, always done my OC's via bios but been swayed to try the precision boosting.

I've just installed a new CPU Ryzan 5 5 5600X, In my Bios I've reset everything to default and only enabled the XMP profile along with the full power fan settings.

My plan was to test my Precision Booster through Ryzen master and test until I find the best score and then input it into Bios permanently.

I'm following along a video and they are testing on Cine bench first to get the peak TEMP/FREQUENCY/PPT/TDC and EDC at default, they they create a profile and enable Precision boost and max out all the settings by hovering over each to see the recording full number.

So for example when I hover over PPT it shows as 1000 being the max, I set each to the max for the next part of the test but even after applying none of the setting take hold..

So I am curious is there anything within my bios I need to enable/disable in order to get this running correctly ? Disable C-state ? PBO set to enabled/auto or disabled etc ?.

Thanks for any help with this.

 

[random_matt]

Personally, just keep it simple. Start from default state and turn PBO on and play with curve optimiser, done. I do not waste my time with software outside of the bios either.

 

[The Asgard]

Personally, just keep it simple. Start from default state and turn PBO on and play with curve optimiser, done. I do not waste my time with software outside of the bios either.

I would agree with this. Most of your gains will be with the curve optimiser. Less voltage means less heat and therefore more headroom for the chip to achieve higher sustained frequencies. After this once your stable, just tweak your ram.

 

[fendertele]

Hi so to get my head round this, I was following a youtube video before I returned to the thread.

I sacked off Ryzen master and instead opted for something called PBO2tuner... nice and simple put in the undervolt and test and increase until stable with the plan of putting the stable settings into BIOS permanently.

The issue I have and may be linked with the PPT issue as mentioned earlier which couldn't be changed.

When monitoring in HWmoniter as the youtuber explained, with each undervolt he said to expect certain things to change when running cinebench test.

The package temp will decrease with every change, which I saw happen Default = 63.3c , -10 = 62.5c , - 15 = 61.4c
The Cores clock will increase with every change, Which I saw happen - Default = 4092, - 10 = 4192, - 15 = 4216
The Cinebench score will improve with every change, Which I saw happen.........................................................
The Power package will increase with every change, This didn't happen every change still sat around 77.7w... where as watching his video it did go up with every change.

 

[fendertele]

I've realised why I'm having such a hard time of this.

When I run OCCT stress tests, Prime, Cinebench etc... My clock speeds are hitting max 4200. only the CPUZ as shown below is hitting the max boost and even when it does it's not reporting above 4.3 as seen below.

 

[random_matt]

My advise stands, follow it or do not.

 

[fendertele]

My advise stands, follow it or do not.

I have I've turned on PBO in bios ( Auto) and input -10 for curve optimizer. Then to test if it's stable I've been trying to run stress tests.

But as you can see with the screenshots above i'm not getting correct readings none are reading above 4.3 during any of the tests on any of the monitors. But strangely when I run the CPU-Z stress test It shows it is hitting 4.6 and more, while the other monitors still show 4.3.

Any idea why this is happening ?

 

[Ch3m1c4L]

That cpuz number, 4685, is your score, not your clock speed

 

[random_matt]

I just looked, your clocks are correct (maximum). They do not run at 4.6 all the time, depends on loads. They are called boost clocks for a reason and not every core will be 4.6. My 7900X3D does not do 5750 on every core.

 

[fendertele]

That cpuz number, 4685, is your score, not your clock speed

Thanks, that is correct selecting either Bench test or CPU stress results in the same numbers.

 

[fendertele]

I just looked, your clocks are correct (maximum). They do not run at 4.6 all the time, depends on loads. They are called boost clocks for a reason and not every core will be 4.6. My 7900X3D does not do 5750 on every core.

Ahh right thanks, Spent all night doing PBO through my bios and getting different results when stress testing, none of which stress hard enough to make any of the cores hit 4.6ghz ( OCCT, Cinebench, Corecycler) so was unable to see if I was actually getting any gains when it won't max out any of the cores.

Might just go back to traditional overclocking as it's much easier to see If i'm making progress.

Sorry for bothering you all with this, completely new to the whole PBO thing.

 

[Ch3m1c4L]

Generally speaking, traditional all core oc will give you better multi core performance. PBO should in theory boost single cores higher, but without tuning a lot, will be running hotter and as such slower under multi core loads.

There should be some form of auto oc in the bios to allow boosting +200mhz without manual oc, and with good enough cooling you'll get all coś sitting at max/near max boost