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Carrizo FX-8800P, A10-8700P Info and Optimizations - Page 27

post #261 of 314
Well, isn't that what i said?
At least you can force the CPU to stay above 2.1 GHz. I had throttling (for like half a second) to 1.4 GHz.

So if it only throttles to 2.1 instead of 1.4 that's already a big advantage.
post #262 of 314
I am working on a tool that overclocks the cpu, and limits the frequency based on temperature. When certain temperature is reached then the cpu downclocks, it is based on windows power management, and amdmsrtweaker. I want to know how to read cpu amperage in order to calculate the power consumption.

Maybe i can have any help from The Stilt? i don't know how to use the msr registries for reading the cpu power or amperage.

Thanks.
post #263 of 314
Quote:
Originally Posted by powerrush777 View Post

I am working on a tool that overclocks the cpu, and limits the frequency based on temperature. When certain temperature is reached then the cpu downclocks, it is based on windows power management, and amdmsrtweaker. I want to know how to read cpu amperage in order to calculate the power consumption.

Maybe i can have any help from The Stilt? i don't know how to use the msr registries for reading the cpu power or amperage.

Thanks.

There is nothing I can do unfortunately, as all such information is strictly confidential. Also the power management is solely handled by the SMU, and the documentation for it is only available to AMD engineers. Having an NDA will not gain you a access to these documents either.

The actual power consumption of the CPU can be only aqquired from the SMU. Despite Excavator designs use SVI2 voltage interface, which allows power telemetry the telemetry feature is not used on Excavator. The APM power estimation is not that accurate and it only shows the estimated power consumption of the CPU only. Not very helpful when the total budged is shared between all the domains (CPU, GPU, NB, MEMCTLs, FCH, IO etc).

Also without the knowledge how to program the SMU for desired operation, you have basically zero control on the CPU frequencies. Nothing you can do either from the MSRs or the PCI/-E configuration space (outside accessing the SMU) will change anything.
post #264 of 314
I don't have Carrizo on my hands to make a test. It downclocks to 2.1 ghz is what you are saying, if you change the windows power management in order to use the 100% of the processor frequency maybe it will no downclock, or no?


PROCTHROTTLEMAX 100

PROCTHROTTLEMIN 100

Sorry for my bad English. I'm from south america.
post #265 of 314
The frequency depends completely on the calculations and measurements of the SMU. You might be able to set min / max frequencies at idle, by changing the windows parameters but otherwise the SMU is in complete control.
post #266 of 314
There's a guy on the other forum that said
Quote:
I managed to use this trick on a Toshiba laptop with a FX 8700P. It's got low end cooling and a 19W TDP limit so i had to settle for a maximum boost clock under sustained load of 2.8Ghz at like 0.900v (roughly). Nonetheless this has boosted performance a bit as it was rarely getting over 2.2Ghz at stock voltatge settings and would even drop to 1.8Ghz under heavy load. Now it holds 2.8Ghz under all but extended prime95 small FFT where it sometimes drops to 2.6Ghz.

I guess I have the same TDP limit but I can't find how he was able to get 2.8Ghz full cores?
My APU although it respects the voltages it seems to completely ignores my new mutliplier settings, at full load it just won't go above 23x.
Edited by -sandro- - 7/16/16 at 7:10am
post #267 of 314
No help?
post #268 of 314
Can you maybe show us your AMDMsrTweaker-Script?

Are you 100% sure that your APU doesn't hit its thermal limit and can't clock over 2,3GHz because of that?
post #269 of 314
Quote:
Originally Posted by dabeste View Post

Can you maybe show us your AMDMsrTweaker-Script?

Are you 100% sure that your APU doesn't hit its thermal limit and can't clock over 2,3GHz because of that?

I'm not sure but I should al least get those frequencies for a minute or just seconds before hitting thermal limit?
I tried every a value and even this extreme one but it seems that P stats only affect single threaded operations. Mult threaded still obey the stock values.


Edited by -sandro- - 7/19/16 at 6:18am
post #270 of 314
Maybe your Windows Power Options are not set up right.
Go to Control Panel - All Control Panel Items - Power Settings - Change Plan settings (on your current power plan) - Change Advanced Power Settings
(depending on your version of windows, this path can be a little different)
Then go to processor managment and set "System Cooling Policy" to "Active" and "Maximum Processor State" to 100%.
Just an idea..

If that doesn't work, it could also be something in the BIOS/UEFI that someone blocks your settings.
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