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Any guides to tuning RTL and IOL for memory o'clocks?

 
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post #1 of 6 (permalink) Old 05-30-2020, 02:17 PM - Thread Starter
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Any guides to tuning RTL and IOL for memory o'clocks?

I'm here specifically referring to CoffeeLake & Skylake builds. Are there certain values that are recommended for certain memory speeds?
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post #2 of 6 (permalink) Old 06-01-2020, 07:46 PM
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there are some in the memory section or on hwbot, the motherboard selects the rtl when training to the memory frequency, so select desired mem speed and preferably 1t , restart go in bios if it hasnt trained properly restart again, once the rtl pairs and iols pairs are close or the same, you can decrease the rtl initial value and increase iol latency offset from 21 normally you can only go about one step. so for instance 2t 4400 is 69 71 13 14 and tightend is 69 69 13 12, 1t 4400 is 60 61 6 7 and tightend maybe 60 60 6 6 , lock the values in so its not lost from bad training
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post #3 of 6 (permalink) Old 06-02-2020, 01:53 PM - Thread Starter
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@truth hurts
I tried you suggestion, reducing the RTL Initial Value did seem to reduce the AUTO RTL and IOL values seen after training from where they were before tuning the RTL Initial Value (after many restarts and no boot conditions). Interestingly instead of raising Iol Latency Offset someone here on overclock.net suggested decreasing it (Kedar Wolf). I tried this and the AUTO IOL and RTL values stayed about the same but the AUTO RFR Delay values decreased. By looking at other people's RTL, IOL, and IOL Latency Offsets it seems like all these values increase with increasing frequency?

What's even stranger is Kedar Wold said on his 8700k tuning his IOL Latency Offset affected his ability to overclock his uncore/LLC (6th post down):
https://www.overclock.net/forum/5-in...hread-981.html

Last edited by 8051; 06-02-2020 at 02:05 PM.
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post #4 of 6 (permalink) Old 06-03-2020, 02:41 PM
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the example you showed was for 4200 tightend to 63 65 13 14

here is mine now at 4200 running 58 58 7 7
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post #5 of 6 (permalink) Old 06-03-2020, 02:50 PM - Thread Starter
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1 T at 4200Mhz. is amazing right?

Is RTL and IOL something you have to be tuning manually at >4000Mhz.? Or does XMP still function at those frequencies?

Thx for your help truth hurts.
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post #6 of 6 (permalink) Old 06-03-2020, 03:13 PM
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nah you let the board do it on auto first as there might be a issue something to tight or not enough voltage for ram or sa. once you have all those right then you can make it alittle better if needed
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