RAM Settings on ROG Hero VIII Ryzen 3rd Gen

[masternikolaos]

Hello there,

 

I recently built a new system and switched over from Intel to Ryzen 3900X. I have some Ballistics RAM that is rated up to 4000MHz. Since I don't have a ton of time these days, I went for the lazy solution and set the DOCP to 4000MHz. However, I keep seeing info online stating that 3600MHz and 1800 for the FCLK setting leads to higher stability and potentially higher FPS. My question is whether or not I should drop my RAM down to 3600MHz in order to maximize my performance gains (I haven't benched trying both settings, so that will happen at some point). Is DOCP at 4000MHz the better setting to keep without me touching anything else, or is it just a number that looks good but is costing me frames? Should I touch anything else beyond just the DOCP setting for a quick and clean solution? Eventually I'd like to get down and dirty and learn how to overclock on this motherboard to mess with RAM timings and what not, but grad school keeps me busy . My rig's purpose is 4K to 1440p gaming (depending on whether I'm projecting to my monitor or to my TV through my receiver through my RTX 3090), so just trying to make sure I'm not hindering performance where possible. 

 

Thanks in advance for any insights. 

[Guest]

Meet in the middle at 3800mhz? 

[Skiiwee29]

This video will help you decide the way to go with playing with RAM speeds.

 

 

[masternikolaos]

1 minute ago, Skiiwee29 said:

This video will help you decide the way to go with playing with RAM speeds.

 

 

Thanks. I actually watched this an a couple of other videos earlier today, but I suppose part of my question is whether or not setting DOCP to 4000MHz and not doing anything else is actually a good idea at all, or if it's going to be hurting because the 4000MHz profile might not be taking into account the best settings for 1:1 scaling, etc. In other words, is it better for me to set DOCP to 3600MHz (or 3800MHz with some additional tweaking of 'X' and 'Y') for maximum gains with minimum effort, or should I trust the DOCP profile for 4000MHz to be superior?

[WereCat]

first of all, try how high your FCLK goes.

If you can manage 1900MHz, then go for 3800MHz DOCP otherwise you will be leaving performance on the table. If you dont want to fiddle with the FCLK, just go for 3600MHz DOCP and the FCLK should automatically set itself to 1800MHz.

[Guest]

3 minutes ago, WereCat said:

first of all, try how high your FCLK goes.

If you can manage 1900MHz, then go for 3800MHz DOCP otherwise you will be leaving performance on the table. If you dont want to fiddle with the FCLK, just go for 3600MHz DOCP and the FCLK should automatically set itself to 1800MHz.

At what memory frequency does the IF uncouple when set to automatic? 

[WereCat]

Just now, ShrimpBrime said:

At what memory frequency does the IF uncouple when set to automatic? 

above 1800MHz (3600MHz for DRAM)

[masternikolaos]

Just set my DOCP to 3800MHz and my FCLK to 1900MHz and posted just fine. Haven't done any stress testing for stability, but so far so good? *crossing fingers*

[WereCat]

2 minutes ago, masternikolaos said:

Just set my DOCP to 3800MHz and my FCLK to 1900MHz and posted just fine. Haven't done any stress testing for stability, but so far so good? *crossing fingers*

Nice! I cant even boot with 1900MHz FLCK no matter what  But I have a launch week silicon so its a garbage at overclocking.

[masternikolaos]

1 minute ago, WereCat said:

Nice! I cant even boot with 1900MHz FLCK no matter what  But I have a launch week silicon so its a garbage at overclocking.

Damn . Silicon lottery sucks! If this stays stable, next thing I’m overclocking is the CPU. Had really good silicon lottery on my old 8700K where I kept it at a nice 4.9GHz. Pretty sure I won’t get anywhere past 4.2GHz on this CPU though from what I’ve been reading.

[Guest]

8 minutes ago, masternikolaos said:

 4.2GHz on this CPU though from what I’ve been reading.

It's the degradation from needing more voltage to sustain an overclock. 

You check the FIT voltage. On average 1.325v, some higher, some lower.

It's the current (amps) drawn from the load that causes the damage.

The cooler you run it the better. Most people limit to 1.3v.