Originally Posted by pyromaniac1
So I followed ryzen 3000 launch coverage and there seemed to be a lot of drama regarding high Temps and pbo + auto OC not working and what not.
Now that BIOSes have matured I've finally gotten my hands on a 3600. So where do I start?
I'm coming from a 2600x where I found best gaming results with a fixed undervolt @1.3125 and PBO maxxed out on bios.
However from what I understand fixed undervolt actually reduces performance in 3000 series. So can someone share a link or a thread which will be a good starting point for me? I want to understand :
1) fixed all core oc vs PBO vs auto OC maxxed vs per ccx OC?
2) ryzen master for OC vs OC in bios?
3) what impact does 'Cool & Quiet' and 'Spread Spectrum' have?
I don't think much has changed in regard of OC'ing since launch/few months after launch.
Best to OC the RAM, keep to 1:1:1 for FCLK:UCLK:MEMCLK. Do bare in mind that you may not see the gains in gaming from this unless have a decent GPU, link
If your after least hassle for core OC, I'd set Precision Boost Overdrive to manual, set the PPT: 142 TDC: 90 EDC: 140. This will give the limits of a 105W CPU (ie R5 3600X). Bump Max CPU Boost Clock Override to say 200MHz, see if the CPU exhibits clock gain, then run some benches, compare it to a lower override. Which ever MHz gain gives performance gains with clock increases is the one to use, others maybe exhibiting "clock stretching".
I have not done manual core OC, if you decide to, using this method
posted by The Stilt you can see what the CPU SMU determines as "safe voltage" for 24/7 use under high load. This value could be what you wanna be around for your manual OC. Per CCX OC again I have not done.
I have had several Zen2 CPUs, R5 3600, R7 3700X & R9 3900X. I always setup profiles via UEFI (BIOS).
If you go PBO OC you wanna keep things like 'Cool & Quiet' & 'Global C-States Control' set to 'Enabled'. The cores not in use will enter lower power states/sleep, so the ones in use will boost better.
Spread Spectrum is a feature used to alternate frequency to reduce EMI. When OC'ing you wanna have this off.