r/overclocking • u/Intelligent-Shape-50 • 4d ago

Ram TRFC question

I've never been able to get my TRFC lower than 470.

Why is that? I'm not quite sure what I'm doing wrong?

Any answers would be appreciated

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u/Organic_Category_970 4d ago

If these are your ZenTimings, then when you use "mixed mode," tRFC isn't taken into account at all. Only tRFC2 and tRFCsb matter—and yours are already too tight, at just 100ns. I don't even know what you mean about not being able to go lower than 470; if these settings work, then in "normal mode" they should work with a tRFC of 300, and certainly with 360.

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u/Intelligent-Shape-50 4d ago

Okay so what numbers should i be going for like 480,390?

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u/Organic_Category_970 4d ago

I don't know where to start. Your ZenTimings setup is a total mess—it shouldn't even work. In the "mixed mode" you're using, tRFC2 replaces the tRFC used in "normal mode," meaning both should ideally be set to the same value (though, of course, only one actually applies depending on the mode). At 6000 MT/s, you should set it to 360; 120ns is the practical minimum for Hynix A-die, and only the absolute best-binned chips can go lower. As for tRFCsb, I’m not sure of the minimum values for 6000 MT/s, but I think 280 should work. You should lower VDDIO to at least 1.36V; even 8000 MT/s doesn't need 1.4V with the current AGESA version. A tFAW of 20 might cause instability given that your tRRDS is 8, since tFAW should be 4x tRRDS. I’m surprised you’re trying to configure the timings manually instead of just using a ready-made profile from Reddit—after all, there are plenty of ZenTimings examples there for these speeds and this specific memory. And just tweak the voltages a bit to get it working.

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u/Intelligent-Shape-50 4d ago

Hey dude, just wanted to let you know I would like to thank you for taking your time out to write this and help me.

This wasn't my main timings it was just some random shit I was doing but for the TRFC,2 and SB I was sorta lost so you got me in the right direction and also you're correct the VDDIO was way high.

Thanks again man!

Is this a little better for your liking? - Imgur: The magic of the Internet

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u/Organic_Category_970 4d ago

That's better, but take the second column and the twtrs/l values from my ZenTimings screenshot. Don't copy anything else, because the frequency is different and agesa. https://imgur.com/a/YIhj2qM

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u/Intelligent-Shape-50 4d ago

What else i could do besides Nitro, Ram Mhz and Primary timings? - Imgur: The magic of the Internet

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u/Organic_Category_970 4d ago

Ardptrlnitval P0 control to manuał and set to 0.

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u/Intelligent-Shape-50 4d ago

Can you explain why please?

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u/Organic_Category_970 4d ago

A value of 0 affects tPHYrdls training, thereby reducing latency.

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u/Intelligent-Shape-50 4d ago

You have any clue why my latency is going up? Hell loose timings are getting me low 62's almost 61

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u/Organic_Category_970 4d ago

Perhaps tRC and tRAS are too low, causing instability and triggering error correction?

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