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Ryzen 3000/5000 Overclocks

sswilson

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Just spent the better part of a day playing with a 3900XT and came to pretty much the same conclusion I came to with the 3700X and 3600 processors....

Turning off PBO and offsetting the vcore by -.0875V nets me low temps and benchmarks that are within 4 -5% of what I see when I lock all cores @ 4350.

I dunno... maybe I've been spoiled over the years, but pushing an OC for anything less than 10 - 15% improvements doesn't make sense to me.
 

freeagent

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I can run my 5600X at 4600 all core @ 1.225, like an Intel. I can boot into windows at 4900 and do some stuff.. But I cannot nail down anything between 4600 and 4900. I gave up and ran PBO + 200. But.. for the most part a solid 4600 is the better performer. My 3600XT couldn't overclock either. I could run it at 4500, but not 4600. At stock it was hitting 4475 on 3 and 4625 on the other 3, with a hard load @ 4300. No point in ocing these things really. Maybe IF and mems but that's abut it.
 

lowfat

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This was brought up on another site. Should make finding your PBO2 curves a tad easier.

 

Solace

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Just spent the better part of a day playing with a 3900XT and came to pretty much the same conclusion I came to with the 3700X and 3600 processors....

Turning off PBO and offsetting the vcore by -.0875V nets me low temps and benchmarks that are within 4 -5% of what I see when I lock all cores @ 4350.

I dunno... maybe I've been spoiled over the years, but pushing an OC for anything less than 10 - 15% improvements doesn't make sense to me.
5900x with -30 CO yields that range of improvement (12%), minframerates are higher as well for what single core boosts are achieved. Most wont really care about 5-10% in this day and age but gamers (under 4k res) and some various other groups will. I read up on the previous zen chips and apparently OCing those generations is a bit of a waste of time and yield minimal gains like the 1800x I had.

Only minor drawback is the heat/voltage running to the chip, apparently PBO2 has some beefy thermal tolerance as the power draw sometimes spikes thermals to 88-92c for a moment when hitting 5100mhz boosts even on a noctua d15
 

Shadowarez

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anyone know a way to curve the PBO2 Voltage spikes? i mean 1.083v to 1.547v seems really unsafe unless thats normal for amd and wont kill itself with spikes like that.
 

lowfat

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anyone know a way to curve the PBO2 Voltage spikes? i mean 1.083v to 1.547v seems really unsafe unless thats normal for amd and wont kill itself with spikes like that.
AMD seems to think its safe. It isn't voltage that is going to degrade the silicon. It is current. When it jumps to 1.5V it is only going to be 1-2 cores. So not a whole lot of current.

Only thing you could do is try undervolting via the PBO2 curve editor.
 

Shadowarez

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ill tinker im off this thursday i have that dynamic oc switcher on the Asus Dark Hero board as well as PBO2. maybe i can try that PBO Curve to limit the voltage a bit. temps spike when it gets that 1.5v spike as well wanna normalize it a bit if possible.
 
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