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3900x PBO.

I have written time an again in various discussions how to configure the 3900X for light loads. Which means 1-2 cores hit 4600+ (on D15 at least) and the rest on light loads are hovering between 4400-4550. If you try to push CB20 then ofc this is not light load and the CPU will throttle down to reduce power. Why? Because on light loads AMD has said 1.5v is fine, but on heavy loads (all core 100%) anything over 1.27v would damage the worst dies.

Have a look here. I have PBO off as I am using again 1usmus v1.1 these days but have activated XFR and everything else he advices. Also make sure you have uninstalled Ryzen Master from your system and you have flashed the BIOS after you done so.

https://forums.overclockers.co.uk/posts/33266474/
I definitely have slightly higher volts in all core load. But still under 1.3
 
Gigabyte Aorus Pro. So not a low end board by any means.

It's never improved through any bios or chipset update.
Should be the same as mine really. I think I might have a golden chip.

I seem to have super low temps and good boosts.

I don't use any special settings or 1usmus plan or anything.

I did at the start, but realised actually it didn't do anything.

I might install ryzen master and do some per core overclocking and see where I can get to.
 
I tried those exact settings along with a bit of +/- on the offset. My best all core was about 4, 117mhz and boost was barely touching 4,500mhz single core.
Pretty much what I'm getting now. It's infuriating. It just stops boosting at 70 degrees. I've still got 10-15 degrees of headroom... At this rate I might go back to my manual OC. It's beating my CR20 score by about 700.
 
Should be the same as mine really. I think I might have a golden chip.

I seem to have super low temps and good boosts.

I don't use any special settings or 1usmus plan or anything.

I did at the start, but realised actually it didn't do anything.

I might install ryzen master and do some per core overclocking and see where I can get to.

I'm not too sure. Mine will do 4.4ghz really nicely with a manual OC. Stock cinebench r20 is like 6900, 4.4ghz is up around 7650, so a huge bump in performance really. And I'm not losing single core performance as it wasn't boosting to 4.6ghz on single anyway lol.
 
I'm not too sure. Mine will do 4.4ghz really nicely with a manual OC. Stock cinebench r20 is like 6900, 4.4ghz is up around 7650, so a huge bump in performance really. And I'm not losing single core performance as it wasn't boosting to 4.6ghz on single anyway lol.
Try and get your load line calibrated. My highest score is 7707 CR20 at just under 4.4Ghz all core.
 
got 7783 at 4.4ghz all core with cl18 ram in cinebench r20 , i could get close to 8k if i swapped out to cl16, may take the plunge but at £400 for a 3600mhz cl16 its pretty expensive, what i have now I'm very happy with.

hey with 4th gen ryzen inbound may be worth holding on and see what next gen cpu's can do :)
 
got 7783 at 4.4ghz all core with cl18 ram in cinebench r20 , i could get close to 8k if i swapped out to cl16, may take the plunge but at £400 for a 3600mhz cl16 its pretty expensive, what i have now I'm very happy with.

hey with 4th gen ryzen inbound may be worth holding on and see what next gen cpu's can do :)
Bit of a waste IMO. I only upgrade every 5 year period. Just waiting on next-gen GPU's before my build is complete. As far as I can see generally people don't get past 8000 multi-core score. So I'm pretty happy being around 7700 :).
 
Bit of a waste IMO. I only upgrade every 5 year period. Just waiting on next-gen GPU's before my build is complete. As far as I can see generally people don't get past 8000 multi-core score. So I'm pretty happy being around 7700 :).

thats very true, stock the 3900x has a very impressive score, but once you play around the gains are pretty big which is nice.
 
thats very true, stock the 3900x has a very impressive score, but once you play around the gains are pretty big which is nice.
My view is you can spend the money all over again and just have a rolling expense for maybe a 10-20% uplift anytime new stuff comes out. Or buy everything together, OC the crap out of it so it's better but doesn't blow up. Then wait 5 years and hopefully by that point you'll be seeing a 100-200% increase in performance.
 
I'm not too sure. Mine will do 4.4ghz really nicely with a manual OC. Stock cinebench r20 is like 6900, 4.4ghz is up around 7650, so a huge bump in performance really. And I'm not losing single core performance as it wasn't boosting to 4.6ghz on single anyway lol.
So with just my offset, my stock CB20 is now 7400. Its a little lower without offset and stock cooler.
 
My view is you can spend the money all over again and just have a rolling expense for maybe a 10-20% uplift anytime new stuff comes out. Or buy everything together, OC the crap out of it so it's better but doesn't blow up. Then wait 5 years and hopefully by that point you'll be seeing a 100-200% increase in performance.
I waited 7 years for my CPU upgrade. Few GPU upgrades I between however.
 
Did some testing of PBO today.

Various loads : Gaming / Super Pi / Prime Blend / CB20 Single Core

Peak/Boost speed measured by HWInfo

Within margin of error on my part - It does nothing.

TVWH11P.png


25mhz i conside margin of error / 0.5% in mhz
Biggest difference of 50mhz in gaming could be down to the inconsistancy of load in a non consistant environment, still only approx 1% variance in mhz
 
Did some testing of PBO today.

Various loads : Gaming / Super Pi / Prime Blend / CB20 Single Core

Peak/Boost speed measured by HWInfo

Within margin of error on my part - It does nothing.

TVWH11P.png


25mhz i conside margin of error / 0.5% in mhz
Biggest difference of 50mhz in gaming could be down to the inconsistancy of load in a non consistant environment, still only approx 1% variance in mhz

What's your cooler & temps?
 
Im using the Community_V3 Profile on my 3900X under custom water cooling, PBO is on Auto, the only difference ive noticed between the community V3 and 1Usmus power plan is the community one seems to hold boost clocks for a while longer, mine boost's to around 4.55ghz is the max ive seen it hit with both plans, however, without either plan just using the RyZen plans that come with the drivers, I max out around 4.35ghz.
 
Yeah. Single core XFR is def better than manual. However the real question is how often is that going to benefit you? Most apps use at least 2 cores 4 threads. Some games can utilise 8 cores. I'm gonna buff up my cooling to see if I can push to 4.4ghz all core. Prob take quite a bit of voltage to get there (prob 1.4v) but AMD safe is reported at 1.45v. So as long as I keep the temps under 85 at full wack I recon I'm good.
 
Yeah. Single core XFR is def better than manual. However the real question is how often is that going to benefit you? Most apps use at least 2 cores 4 threads. Some games can utilise 8 cores. I'm gonna buff up my cooling to see if I can push to 4.4ghz all core. Prob take quite a bit of voltage to get there (prob 1.4v) but AMD safe is reported at 1.45v. So as long as I keep the temps under 85 at full wack I recon I'm good.
This is not true. The only 'safe' voltage AMD recommends is the default voltage used by the CPU/Motherboard.

Any adjustments to that and you are playing a lottery with your silicon.
 
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