I have have done lots of research and tinkering to cool the 7800X3D with little to no performance loss in gaming and everyday workloads. Idle temp of 43C and gaming temp of 65C - 70C.

Specs:

• AMD 7800X3D

• 32 GB G.Skill Flare X5 6000 Mhz with EXPO II

• Asus ROG Strix B650E-F Gaming WiFi

• ASRock AMD Radeon RX 7900 XT Phantom Gaming 20GB OC

• Lian Li O11 Air Mini

• 9 x Thermalright TL-C12PRO 120mm

• Thermalright Phantom Spirit 120 SE

• Corsair RM1000e PSU

BIOS Settings under Advanced:

• SOC Voltage - 1.2V

• PPT - 85000 mW or 85 W

• TDC - 75000 mW or 75 W

• EDC - 150000 mW or 150 W

• PBO - Each core set to -25

• Thermal Llimit - 85

• Medium Load Boostit - DIsabled under AI Tweaks

I just want max performance, I have really good cooling. I saw skatterbencher settings for running 5.5GHz or something he claims, I figure those numbers are too high and his mobo is much better, so before I fry my chip I thought I should ask for your expertise. What do I put for those PBO limits? Thanks in advance

TL;DR: Lower PPT to reduce temperatures! For my ASRock B650E the settings are: Advanced > AMD CBS > SMU > PPT in mW set to 75000.

For those of you who do not like their x3d processors to run at 85+ degree temperatures, I've got a little trick for you to get peace of mind when running 100% loads on these chips.

My 7800x3d would run at 82-84 degrees and the fans on my AK620 would ramp up to 100%. I my quest to silence my build (in a North Mesh) I decided to run the fans at 40% until 90 degrees. That worked! However, CPU would run 88-90 degrees. Since I don't really like those temperatures, I went further and tried to reduce the power draw. I had already set -30 as negative offset for the curve optimizer, but this did nothing to power draw or temperatures (my previous Ryzen 5 7600 dropped from 90 watts to 78 watts and dropped 10 degrees).

I have an ASRock B650E Steel Legend, and with ECO mode set to enabled, nothing changed again. So I got tired of it and ran Ryzen Master to see where my limit was. PPT was at 100% limit and 90W, so I went through all pages of my motherboard to try and limit that.

I found the correct setting! I could limit PPT to 35W, 45W, whatever I wanted. I finally set on 75W, still using the -30 negative curve optimizer and +150 MHz positive PBO clock. Reaching 68-69 degrees and 4.7 GHz in Cinebench R23 I'm very happy! This means a drop in almost 20 degrees with fans set to 40%! Cinebench scores still get me over 18000 in R23, other benchmarks at stock show around 18100 to 18200 scores

Here's a Ryzen Master screenshot when running Cinebench R23:

https://i.imgur.com/rlQY7Bz.png

Not sure where to find this for other brands, but for my ASRock B650E the settings are: Advanced > AMD CBS > SMU > PPT in mW set to 75000.

Hello guys, I undervolted my CPU and here’s what I did:

curve optimizer set to -30 all core.
platform thermal throttle limit : 85

My setup:

• Ryzen 7 7800X3D

• Gigabyte b650 aorus elite ax

• 2x16GB DDR5-6000 @ DDR5-6000

• Corsair h150i elite capellix xt

My cinebench score:

HWinfo:

https://ibb.co/b7KQydW

https://ibb.co/5vHd4y4

https://ibb.co/BB7mgzb

First, are those good numbers? Second, is there anything I can do to lower the CPU temps, like enabling PBO limits? I dont know what to type in PPT,TDC and EDC.

Thank you very much.

If I want to set my new 7800x3D in eco-mode (65 Watt) with Ryzen Master software, how do I do that? I have already set it to Eco-mode.
But have it "permanently" changed it to Eco-mode? or do I need to run Ryzen master at windows startup in order for it to work?

And is there a place I can see that it now operates at 65watt instead of 120watt? Hwmonitor?

As the title says, i have set PBO to -30, wondering if there's any PPT, TDC, EDC suggested values or i should just keep it to auto

EDIT: For anyone wondering, this is what i ended up with

• PBO -30 on all cores apart from -25 on the two best ones

• 122 82 124 ( best for gaming)

• AMD CBS > NBIO > SMU > CPPC Enabled​

• AMD CBS > NBIO > SMU > CPPC Preferred Cores Enabled

• AMD CBS > CPU > Global C-State Control Enabled​