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EDC = 1, PBO TURBO BOOST

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post #901 of 915 (permalink) Old 05-22-2020, 10:49 AM
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Quote: Originally Posted by Dash8Q4 View Post
Did you ever test these settings? Or any others for that matter?
cheers
I did.
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post #902 of 915 (permalink) Old 05-22-2020, 11:04 AM
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Quote: Originally Posted by R-Type! View Post
I basically gave up on the EDC bug bec. i never could get it to work. Always had huge performance drops no matter what settings i used (didn't spent too much time but tried quite a few combinations).

Today i woke up early and my coffee told me to try again -> success!

System specs:
3900x
Gigabyte x570 master bios F11
BCLK 100.3 (100.4 causes SATA to act up )
G.Skill F4-3600C16-16GTZNC [email protected]/1900 1:1:1
RTX gfx


Settings that worked for me:

PPT/TDC/EDC 1200/540/18 (PPT and TDC are Board limits)
Scalar x10
AutoOC +200MHz
1usmus recommended settings except Global C-States: Disabled (with C-States enabled SingleCore performance drops significantly)

Dram 3800 with 1900 synced FCLK/UCLK and Ryzen Dram Calc 1.7.3 Fast timings @1.39V

Everything else (VCore/LLC/SoC etc.) at auto.

Now for some scores:

CB20 MT/ST: 7745/542
CB15 MT/ST: 3402/220
CPU-Z MT/ST: 8786/568
Intel-Burn-Test v2.54 High, 4run average: 154.3
Blender BMW: 1m48s
Blender Classroom: 5m24s

While it was fun finally getting the EDC bug to work for me I'm not comfortable with the Voltages/Power draw with these settings (see HWInfo screen during CB20 run).
HWInfo reports 174W max. CPU Package power during CB20 run.
Thanks to a custom loop the temps are fine


For Comparison my "daily" settings:
PPT/TDC/EDC: 300/230/230 (BuildZoid settings)
-0.125V Vcore offset
C-States enabled

CB20: 7541/535
CPU-Z: 8557/563

max CPU Package Power during CB20: 143W

Interestingly enough my CPU likes negative offset with BuildZoid settings, i get the the best scores at -0.125V.
Using the EDC bug the situation is reversed and any neg. offset lowers the scores (higher neg. offset ->even lower scores, tested from -0.025 to -0.100)

CB20 and HWInfo during CB20-MT Screenshots:

Great scores mate!!
Thanks for sharing.
I will try them out to check if I have any luck. Ofc you a beast mobo , used to have Aorus z390
Wanted to ask you, in windows which power plan do u use? 1usmus Ryzen or something else?
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post #903 of 915 (permalink) Old 05-22-2020, 11:07 AM
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Quote: Originally Posted by R-Type! View Post
I basically gave up on the EDC bug bec. i never could get it to work. Always had huge performance drops no matter what settings i used (didn't spent too much time but tried quite a few combinations).

Today i woke up early and my coffee told me to try again -> success!

System specs:
3900x
Gigabyte x570 master bios F11
BCLK 100.3 (100.4 causes SATA to act up )
G.Skill F4-3600C16-16GTZNC [email protected]/1900 1:1:1
RTX gfx


Settings that worked for me:

PPT/TDC/EDC 1200/540/18 (PPT and TDC are Board limits)
Scalar x10
AutoOC +200MHz
1usmus recommended settings except Global C-States: Disabled (with C-States enabled SingleCore performance drops significantly)

Dram 3800 with 1900 synced FCLK/UCLK and Ryzen Dram Calc 1.7.3 Fast timings @1.39V

Everything else (VCore/LLC/SoC etc.) at auto.

Now for some scores:

CB20 MT/ST: 7745/542
CB15 MT/ST: 3402/220
CPU-Z MT/ST: 8786/568
Intel-Burn-Test v2.54 High, 4run average: 154.3
Blender BMW: 1m48s
Blender Classroom: 5m24s

While it was fun finally getting the EDC bug to work for me I'm not comfortable with the Voltages/Power draw with these settings (see HWInfo screen during CB20 run).
HWInfo reports 174W max. CPU Package power during CB20 run.
Thanks to a custom loop the temps are fine


For Comparison my "daily" settings:
PPT/TDC/EDC: 300/230/230 (BuildZoid settings)
-0.125V Vcore offset
C-States enabled

CB20: 7541/535
CPU-Z: 8557/563

max CPU Package Power during CB20: 143W

Interestingly enough my CPU likes negative offset with BuildZoid settings, i get the the best scores at -0.125V.
Using the EDC bug the situation is reversed and any neg. offset lowers the scores (higher neg. offset ->even lower scores, tested from -0.025 to -0.100)

CB20 and HWInfo during CB20-MT Screenshots:
My gigabyte board also love negative offset. I guess it really depends if the vendor implement the proper pbo codes wrt to their vrm.

My findings here
https://www.overclock.net/forum/10-a...0-part-ii.html
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post #904 of 915 (permalink) Old 05-22-2020, 02:15 PM
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Hello tried the above but did not got so large numbers. It seems more like manual oc numbers though and not like edc bug ones.
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post #905 of 915 (permalink) Old 05-22-2020, 09:44 PM
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Quote: Originally Posted by jimpsar View Post
Great scores mate!!
Thanks for sharing.
I will try them out to check if I have any luck. Ofc you a beast mobo , used to have Aorus z390
Wanted to ask you, in windows which power plan do u use? 1usmus Ryzen or something else?
Quote: Originally Posted by jimpsar View Post
Hello tried the above but did not got so large numbers. It seems more like manual oc numbers though and not like edc bug ones.
I use 1usmus universal Power Plan

In the Hwinfo screenshot i posted you can see the core speed fluctuating a bit so no, not a fixed OC

Maybe I'm lucky with my Silicon. My Chip likes lower Voltages under "normal" conditions so if you supply higher auto voltages in this no-limits scenario it can boost higher.
Since PBO tries to boost all cores equally under multithreaded loads the limiting factor seems to be the 2nd CCD. A per-CCD (or CCX) PBO would be interesting to play with
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post #906 of 915 (permalink) Old 05-23-2020, 08:13 AM
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Been trying to use higher EDC values than 12 on my 3900x just for the sake of it but results would not be "better" than 12 in terms of max boost clock that is.

The only thing I have not touched at all is voltage. I'm on a X470 Prime pro.
At idle, it's using around 4.6 to 4.8 average
In game, around 1.41 to 1.45 average sometimes a bit lower, depends on the game.
push pull (6 fans) on a 360 aio, get around 60°C/65°C in use (was with 28°C room temp)

It's high but does not look worrying?

Would trying some offest bring anything in regards to this edc behavior like higher clocks? or lower temps maybe?

I'm just unsure what offset/voltage to touch (theres tons in this damn bios) and what to try (I don't wanna lower my ST boosts, very happy with them)

thanks for your input, very appreciated on all the work and feedback in this thread!
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post #907 of 915 (permalink) Old 05-24-2020, 09:02 AM
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MCM = Multi Chip Module. Almost every cpu in the last 15 years have been "Multi core modules" just to help clear any confusion up
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post #908 of 915 (permalink) Old 05-24-2020, 09:52 AM
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Quote: Originally Posted by zbug View Post
Been trying to use higher EDC values than 12 on my 3900x just for the sake of it but results would not be "better" than 12 in terms of max boost clock that is.

The only thing I have not touched at all is voltage. I'm on a X470 Prime pro.
At idle, it's using around 4.6 to 4.8 average
In game, around 1.41 to 1.45 average sometimes a bit lower, depends on the game.
push pull (6 fans) on a 360 aio, get around 60°C/65°C in use (was with 28°C room temp)

It's high but does not look worrying?

Would trying some offest bring anything in regards to this edc behavior like higher clocks? or lower temps maybe?

I'm just unsure what offset/voltage to touch (theres tons in this damn bios) and what to try (I don't wanna lower my ST boosts, very happy with them)

thanks for your input, very appreciated on all the work and feedback in this thread!
To look for better clocks you can try with scalar at 10 and higher max boost clock.

To lower the temps a negative CPU vCore offset; if the bench scores are dropping you can compensate with the above or try a higher LLC setting.

The CPU vCore should be VDDCR CPU Voltage on you ASUS but I'm not sure how you can set an offset.

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post #909 of 915 (permalink) Old 05-24-2020, 01:29 PM
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after much playin with settings on pbo pretty decent 300 254 16 llc 3 -0.056 offset its + or -1 1-2% tops of my all core 4300 overclock and hits 4.65 on single core Voltages range between 1.275-1.437.
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Last edited by Bal3Wolf; 05-24-2020 at 05:35 PM.
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post #910 of 915 (permalink) Old 05-25-2020, 02:24 AM - Thread Starter
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Quote: Originally Posted by Bal3Wolf View Post
after much playin with settings on pbo pretty decent 300 254 16 llc 3 -0.056 offset its + or -1 1-2% tops of my all core 4300 overclock and hits 4.65 on single core Voltages range between 1.275-1.437.
The question remains are you happy with the results? Gonna keep using it or go back to manual OC?

There is quite a difference between the CCD's on your 3900X. one does 4.400Ghz and the other 4.600Ghz in boost behaviour. We have seen it quite often for the 3900X & 3950X.

Gigabyte X570 AORUS XTREME, Ryzen 7 3800X PBO boost, 3800/1900 MEM/FCLK, 13.23.17.30.66.tRFC 600 1T 1.700V
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