Question Ryzen 7 5800x3D undervolting help/advice

[rcsverige]

I am considering undervolting my 5800x3D but as I am unfamiliar with undervolting, I figured I would reach out here. I have seen some youtube videos. Or maybe someone could provide some ideas on how to approach a fan curve with this CPU. I run 47-50c when idling and Id like to figure out if it is possible to bring that down knowing that this CPU is notoriously hot.

 

[Roland Of Gilead]

Hey there,

Can you list your PC specs in full including case, fans, CPU/GPU/RAM/Mobo/PSU.

Your idle temps seem quite high. What is your ambient temp? Where you live is it hot right now? Typically, if your ambient temp is say 20c, then your CPU will run at about 10-15c higher. So in this case about 30-35c. If your ambient temp is higher that 20c, then so will your idle be above 35c.

In terms of undervolting there are a number of options. Using Curve Optimizer in the bios, or a software option through Ryzen Master, CTR 2.1, Project Hydra,

Read/watch lots of resources like this: https://forums.flightsimulator.com/t/ryzen-7-5800x3d-undervolt-guide/574169

Look for a guide that has your mobo. Make sure you know what this entails, and how the process works.

And don't forget to test, test and test again for stability You don't want the CPU crashing for any reason.

 

[rcsverige]

Hey there,

Can you list your PC specs in full including case, fans, CPU/GPU/RAM/Mobo/PSU.

Your idle temps seem quite high. What is your ambient temp? Where you live is it hot right now? Typically, if your ambient temp is say 20c, then your CPU will run at about 10-15c higher. So in this case about 30-35c. If your ambient temp is higher that 20c, then so will your idle be above 35c.

In terms of undervolting there are a number of options. Using Curve Optimizer in the bios, or a software option through Ryzen Master, CTR 2.1, Project Hydra,

Read/watch lots of resources like this: https://forums.flightsimulator.com/t/ryzen-7-5800x3d-undervolt-guide/574169

Look for a guide that has your mobo. Make sure you know what this entails, and how the process works.

And don't forget to test, test and test again for stability You don't want the CPU crashing for any reason.

I have heard that its not unusual for this particular CPU (it runs pretty hot) but idk. Here are my specs

Ryzen 7 5800x3D
Asus RTX 3060 12gb OC
Corsair Vengeance DDR4 3200mhz 16gb
RM650x PSU
Asus prime B550m-a
Bequiet Dark Rock 4 with one intake just right now (bought it today)
Kryonaut Paste evenly spread
Corsiar iCUE 220t with 3 Intake fans and 1 back exhaust
The ambient temperature in the house right now is 21c and outside it is 14c.... even when I open the door it doesnt do much for this CPU... I have heard that there isnt a ton you can do to drop the temps on this CPU outside of undervolting or getting an AIO, which unfortunately, my chasis is incredibly too small (I tried today and had to return the AIO because of the case despite it meeting the dimensions)

 

[rcsverige]

Hey there,

Can you list your PC specs in full including case, fans, CPU/GPU/RAM/Mobo/PSU.

Your idle temps seem quite high. What is your ambient temp? Where you live is it hot right now? Typically, if your ambient temp is say 20c, then your CPU will run at about 10-15c higher. So in this case about 30-35c. If your ambient temp is higher that 20c, then so will your idle be above 35c.

In terms of undervolting there are a number of options. Using Curve Optimizer in the bios, or a software option through Ryzen Master, CTR 2.1, Project Hydra,

Read/watch lots of resources like this: https://forums.flightsimulator.com/t/ryzen-7-5800x3d-undervolt-guide/574169

Look for a guide that has your mobo. Make sure you know what this entails, and how the process works.

And don't forget to test, test and test again for stability You don't want the CPU crashing for any reason.

btw I am trying the github instructions you sent and am currently in PBO2... I am in the curve tab. It tells me to set an offset of -30 minimum but it isnt clear if I do that for every core ( there is 0-7; 8 physical cores).... This feels sketch to me which is why I am asking.

 

[Eugene$$]

yes do it on all cores

 

[rcsverige]

yes do it on all cores

Hey thanks, I finished it. I found a detailed video on how to set it up also in task scheduler to ensure that on startup it keeps the offsets and differents values. Thanks. I havent fully tested up to -30 but it seems that, on OCCT, -20 right now seems to be a sweet spot with 120w PPT, 75A TDC, and 120A EDC

 

[Roland Of Gilead]

I have heard that there isnt a ton you can do to drop the temps on this CPU outside of undervolting or getting an AIO, which unfortunately, my chasis is incredibly too small (I tried today and had to return the AIO because of the case despite it meeting the dimensions)

Yes, this is very true. They do run hot. You can expect better results with a big air cooler, like a Noctua NH-D15 or an AIO as suggested.

You could also try a vcore offset in the bios. It could reduce temps slightly further.

Just be sure to test along the way with any changes you make.

 

[rcsverige]

So the other day I decided to underclock the Ryzen 7 5800x3D to bring down temps. I used OCCT to do this along side PBO2. I found a sweet spot where performance was better and temps were low (-20 offset on all cores, 120w PPT, 75A TDC, 120A EDC). I play a lot of cyberpunk and of course there are bugs associated with it but I feel like I am seeing more sometimes but I am unsure as to whether or not it just the game being the game... and maybe I just overlooked the bugs before doing the undervolt. Its not often at all that I see crazy bugs or anything but It got me wondering about the undervolting. Anyone with a similar CPU who has undervolted and experienced any differences in game? Btw, my temps have decreased a bunch in both Idle and under load.

 

[rcsverige]

Yes, this is very true. They do run hot. You can expect better results with a big air cooler, like a Noctua NH-D15 or an AIO as suggested.

You could also try a vcore offset in the bios. It could reduce temps slightly further.

Just be sure to test along the way with any changes you make.

I think I need to upgrade to a new case because I just dont have any room for an AIO. I bought one yesterday but had to return it because, with all the cables, I was unable to install it to the top of the chasis. I have an iCUE 220t and the specs matched the AIO and was compatible but boy it definitely is too tight of a fit for me to be comfortable with. It would have required me to take out the mother board and even then that was guranteed that it wouldnt block important ports on the MB.

 

[Colif]

I was unable to install it to the top of the chasis. I have an iCUE 220t

me again... how big was AIO?

why only try to fit in roof? you can fit up to a 360mm rad in front of that case. you can also fit a 240 in roof but I find front is better as you get fresh air into CPU, rest of components don't care so much

https://www.corsair.com/us/en/p/pc-cases/cc-9011173-ww/icue-220t-rgb-airflow-tempered-glass-mid-tower-smart-case-black-cc-9011173-ww