5800x (and other Zen 3 chips) PBO settings/Temperature fix

[Mussels]

I'm not sure if I should post this here or if a new thread should be started, but yesterday I watched a video (that I link to here) showing that if you set CPU Boost Clock Override to -200 in the bios, so that it runs at 4650 mhz, it lowers the temperature by a lot, so I tried it using Cyberpunk 2077 as a load. With a Noctua NH-D15s cooler and PBO power limits set to stock disabled settings (142, 95, 140) and with Curve Optimizer enabled and CPU Boost Clock Override set to +200, my 5800x ran at 78c. Next I tried only changing CPU Boost Clock Override to -200 and my 5800x's temperature was 68c, so 10 degrees cooler (at CPU Boost Clock Override set to 0 it was 74c). The performance wasn't noticeably different, just a few fps slower, so I thought I would mention this. The video's thumbnail shows -20c, but for me it was -10c, but other than that I though it was useful information. I do realize that lowering PBO limits will allow single core loads to boost much higher than setting boost clock override to -200.
As for me, nowadays I'm running my 5800x with PBO power settings at 142, 95, and 140 with no boost clock override, even though it's stable at +200, and tuned curve optimizer.

Yep, its a great little feature. I played around with it here too, but my chips low voltage at 4.6 all core just sealed the deal on that one... until i run into something that actually needs more single threaded grunt

 

[Tomgang]

i have palying around with my 5950X and think i have gotten some desent settings now. All cores are capable of reasing 5 GHz (that means the worst cores as well) and the best cores can go to 5.25 GHz.

Prime 95 temp arent so bad either. My CPU is only aircooled. Peaked at 77 C, thats when it boost to the 5.25 GHz and all core load hovering around the 4.6 GHz holds a steady 72-73 C. I think thats desent for air cooling.

 

[MaddoggMiranda]

https://www.reddit.com/r/overclocking/comments/n8n0ho/_/gxm6c95

I found this Super Helpful along with some recommendations on this thread. The PBO Curve was pretty easy, Voltages is what i suffered with 3 days took me to figure out voltages, Till i remembered 1usmus Ryzen D RAM Calculator. I set my ram as Bad Bin (worst case scenario) and then copied recommended voltages into my bios and thankfully it worked. no more whea BSOD's SOC IOD CCD VPPD voltages was my problem.

 

[Cowboystrekk]

https://www.reddit.com/r/overclocking/comments/n8n0ho/_/gxm6c95

I found this Super Helpful along with some recommendations on this thread. The PBO Curve was pretty easy, Voltages is what i suffered with 3 days took me to figure out voltages, Till i remembered 1usmus Ryzen D RAM Calculator. I set my ram as Bad Bin (worst case scenario) and then copied recommended voltages into my bios and thankfully it worked. no more whea BSOD's SOC IOD CCD VPPD voltages was my problem.

Auto voltages on a lot of mobos are terrible, 1.2v soc or 1.05v sov and vddp can be both 0.9 and 1.1v, usually setting them lower or higher fixes most of the issues.

 

[Mussels]

installed a 5700x into a friends PC yesterday and the insanely low temps have me jealous
25c idle, 55C R23 load on a be quiet AIO


I wonder if they fixed the IHS contact, or if copying the PBO settings from a 5700x would cool down a 5800x

 

[Cowboystrekk]

installed a 5700x into a friends PC yesterday and the insanely low temps have me jealous
25c idle, 55C R23 load on a be quiet AIO


I wonder if they fixed the IHS contact, or if copying the PBO settings from a 5700x would cool down a 5800x

The latter. Mainly PPT, also voltage curve vs frequency etc. Just setting a 76W limit on 5800X will make them very similar multicore. Look at the TPU test, even the 5600 is over 5C cooler than 5600X, only difference being 200MHz.

 

[Mussels]

The latter. Mainly PPT, also voltage curve vs frequency etc. Just setting a 76W limit on 5800X will make them very similar multicore. Look at the TPU test, even the 5600 is over 5C cooler than 5600X, only difference being 200MHz.

Lower single core is what I dream of.
It's weird seeing 60C MT, and 75C ST, even with PBO off.

I know it's just spikes for milliseconds and whatever, but it annoys my OCD.

 

[Cowboystrekk]

Lower single core is what I dream of.
It's weird seeing 60C MT, and 75C ST, even with PBO off.

I know it's just spikes for milliseconds and whatever, but it annoys my OCD.

Negative pbo would have been awesome

 

[LifeOnMars]

installed a 5700x into a friends PC yesterday and the insanely low temps have me jealous
25c idle, 55C R23 load on a be quiet AIO


I wonder if they fixed the IHS contact, or if copying the PBO settings from a 5700x would cool down a 5800x

Mine are lower on a Vetroo cheapo Air cooler. I told you when i got mine, these chips are insanely cool runners.

 

[Zach_01]

installed a 5700x into a friends PC yesterday and the insanely low temps have me jealous
25c idle, 55C R23 load on a be quiet AIO


I wonder if they fixed the IHS contact, or if copying the PBO settings from a 5700x would cool down a 5800x

As said its the difference in PPT.
76W vs 142W, almost doubled.
Or 5700X is a 88W? I'm not sure... (5600X is definately a 76W CPU)

single core is what I dream of.
It's weird seeing 60C MT, and 75C ST, even with PBO off.

I know it's just spikes for milliseconds and whatever, but it annoys my OCD.

Of course you can set PPT what ever you like on the 5800X, lets say 80~90W, but this wont keep it completely from (temp) spiking on low-middle threaded situations as 5800X is hardcoded with higher ST clocks. You can set a negative PBO override (-25~50MHz) but that will hurt performance also.
Cant eat the cake and have it too...

You can always play around with values inside PBO, with limits, curve and override and find something that suits you.
My 5900X has exactly the same peak temp on ST and MT. (4.9GHz vs 4.5GHz) Around 75C and maybe on MT is a little lower as I keep PPT at 135W (142W stock) with some negative curve.

 

[HD64G]

Me thinks that for whoever lives in hot climats or the summer there is hot and humid, Zen2&3 are very easy to be agjusted just by lowering the power limit up to where the cooling in that PC is enough to sustain good enough temps. Not much performance to lose after all. Max 10% me thinks (at least for gaming and most apps) from 140W going to as low as 90W. If videoediting or any multithreaded app is used for long, better cooling is the best solution.

 

[Mussels]

I just get the impression the 5700x should have launched a lot, lot sooner.
Performance is so close to the 5800x, without the heat issues.

 

[Cowboystrekk]

I just get the impression the 5700x should have launched a lot, lot sooner.
Performance is so close to the 5800x, without the heat issues.

Agreed. 5600 also, but AMD had superior products compared to Intel 10/11th gen so they made the most money they could.

 

[Andrea87]

I've got a 5800x, played around a bit with it. First went to full OC, then tried to get it into a more "reasonable" power setting. So far I've settled on a good setup, giving me still above 15K R23 scores and keeping the cpu at around 70-71°C.
PPT 110W
TDC 80A
EDC 100A
+200MHz PBO All Core
-0.1125V offset undervolt
PBO2 with five cores at -29, the remaining -22/-18/-8
All core boost in R23 4.65-4.7GHz
Ram at 3200MHz CL16

27°C Ambient, Thermalright PA120 maxes out at about 71°C with fans below 1200rpm.

I've managed to hit 16K in R23 with this cpu, but at almost 150W cpu draw and 81-82°C... 5% more is not worthy the +25% power draw.

 

[Mussels]

I've got a 5800x, played around a bit with it. First went to full OC, then tried to get it into a more "reasonable" power setting. So far I've settled on a good setup, giving me still above 15K R23 scores and keeping the cpu at around 70-71°C.
PPT 110W
TDC 80A
EDC 100A
+200MHz PBO All Core
-0.1125V offset undervolt
PBO2 with five cores at -29, the remaining -22/-18/-8
All core boost in R23 4.65-4.7GHz
Ram at 3200MHz CL16

27°C Ambient, Thermalright PA120 maxes out at about 71°C with fans below 1200rpm.

I've managed to hit 16K in R23 with this cpu, but at almost 150W cpu draw and 81-82°C... 5% more is not worthy the +25% power draw.

The best efficiency seems to be in the 100-120W range (depending on undervolt luck)

 

[The King]

@Mussels I need some help here please.

Leave it to me to buy a 5800X the week before ZEN 4 launches.

So the issue I am having is that this CPU wont do PB0 +50 without bluescreening. Both my 5600 and 5600X can do PB0 +200 and -CO on top of that.
Stock perofmance seems slighly lower than the TPU review. So far I am not that happy with this CPU but it could be because it behaves differently from my 5600 and 5600X.

Here are the core ratings in HYDRA. With PBO disabled. So is it normal for a 5800X to not be able to do PB0 +50? I have tried +25 it can boot into windows but +50/+75 etc mostly unstable crashed before windows loads or after I log in. I am considering requesting a return and exchange on Amazon but before I do that I wanted to check with someone who has more experience with this CPU.

 

[OneMoar]

don't use hydra I could never get that pos to produce a stable result
make sure you have the latest board bios this matters on AM4 recent bios's change the boost curve a bit
that being said I had the same problem on my first 5800x it would not run at any boost clock override

Andrea87​

undervolting is going to lead to clock stretching, you need to check against benchmark scores to ensure that it's accually performing because it will report 4.8Ghz but reality its operating closer to 4.6 ect ect effectively (this is not the same as effective clock the only way to tell is to run benchmarks and compare scores)
a undervolt of -0.036 costs me 500-700pts in cinebench despite it reporting the same frequencies' throughout the run

 

[freeagent]

Give it the beans in PBO.. 200/140/180 to start

+200

 

[OneMoar]

Give it the beans in PBO.. 200/140/180 to start

+200

he needs to spray the contact point of the cooler with PAM first tho
so when the cpu slags he can peel the melted ihs off and at least save the cooler

 

[The King]

I have not used Hydra to OC this CPU. I only enabled PBO advanced in the BIOS and PB02 Tuner -25 all cores .

Heat does not seem to be a problem at the moment at stock it barely goes over 80 degress

My Phanteks PH-TC14PE seems to be doing a good job cooling the CPU no thermal throttling that I could see.

 

[freeagent]

he needs to spray the contact point of the cooler with PAM first tho
so when the cpu slags he can peel the melted ihs off and at least save the cooler

What? Nooo..

I am running my 5600X with those settings right now, it won't take the full 200PPT. or the full TDC and EDC because it's so itty bitty. I set mine like that because I lost the paper I wrote my settings down on for it lol. I was using them on my 5900X when I had it on my Strix-F. I give my 5900X 235/160/190 PPT TDC EDC. Works great with my curve

 

[OneMoar]

a 5800x wil and will go right to 95c and throttle into the ground at those settings

the thermal density is much higher on the 5800x being a single ccd

@The King those scores are fine whats the vcore doing 0.296 is awful low for idle
which may explain why pbo is crashing if its dropping back to idle and not ramping voltage fast enough
edit:thats a b450 board

 

[The King]

Give it the beans in PBO.. 200/140/180 to start

+200

I tried this but with +100 and it seems ok now in windows at the moment. Will do some stability testing.

a 5800x wil and will go right to 95c and throttle into the ground at those settings

the thermal density is much higher on the 5800x being a single ccd

@The King those scores are fine whats the vcore doing 0.296 is awful low for idle
which may explain why pbo is crashing if its dropping back to idle and not ramping voltage fast enough
edit:thats a b450 board

HWINFO also shows idle voltage down to 0.200V is that not normal for this CPU? Yes B450M Mortar MAX

 

[OneMoar]

iv never seen one idle that low every one I have seen the idle voltage is 0.900 - 0.950
check vcore NOT VID minimum voltage if you see minimum vcore voltages below 0.800 the board/cpu is doing some weird shit
on most 5800x samples vcore needs to be >1.42v for boost clocks over 4.7-4.8

 

[The King]

iv never seen one idle that low every one I have seen the idle voltage is 0.900 - 0.950
check vcore NOT VID minimum voltage if you see minimum vcore voltages below 0.800 the board/cpu is doing some weird shit
on most 5800x samples vcore needs to be >1.42v for boost clocks over 4.7-4.8

This CPU is Rev B2 not sure if that makes a difference. Under Vcore the min is 1.032V and CPU Core Voltage min is 1.013V.
Will have to look at this again tomorrow. Enabling +200 overide did boost the best cores ratings in hydra from 150 to 158 but boost seems to be still capped at 4800/4850.