Weak IMC or Bad RAM? (4000Mhz B-Die Kit on Coffee Lake) - Page 4 - Overclock.net - An Overclocking Community

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Weak IMC or Bad RAM? (4000Mhz B-Die Kit on Coffee Lake)

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post #31 of 34 (permalink) Old 04-16-2019, 08:49 PM - Thread Starter
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Quote: Originally Posted by The Pook View Post
tWRRD-sg has to = tCWL + 6 + tWRT-L
tWRRD-dg has to = tCWL + 6 + tWRT-S

Maybe your motherboard is just reverting to fail safes if you enter something that isn't possible.

I mean, if it's the best you can do it's the best you can do, can't win the lottery every time. Just lower all the timings as much as you can if you can't increase frequency. A lot of them are pretty high considering you're <4000mhz. Here's mine at 4133 if you wanna try and copy.
Thanks for the info, will continue benching.

Considering T-topology on this board and that Im again running only 2 sticks of 8gb, I do believe it's hard to get much better results - but your tips are always welcome!

Last edited by Alemancio; 04-16-2019 at 08:57 PM.
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post #32 of 34 (permalink) Old 04-29-2019, 05:34 PM
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Just using the same thread, I have a question, this is now my current memory OC (4000Mhz, CL17-17-37, 1.40v DRAM Voltage and 1.20v for VCCIO/SA), I only changed in BIOS the first main timings and the rest is on AUTO, do you guys suggest chaning something more? Also another question, when I set XMP, does it change those subtimings showed in ASRock Timing Configurator? Because when I set XMP and go back in BIOS, all of them are set on AUTO... Thanks!
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post #33 of 34 (permalink) Old 04-30-2019, 03:44 PM
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Yes tighten your secondary's most can easily be halved.
See how close you can get to the secondary's in the last image posted.

Last edited by Dasa; 04-30-2019 at 03:48 PM.
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post #34 of 34 (permalink) Old 04-30-2019, 03:53 PM
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Quote: Originally Posted by ViTosS View Post
Just using the same thread, I have a question, this is now my current memory OC (4000Mhz, CL17-17-37, 1.40v DRAM Voltage and 1.20v for VCCIO/SA), I only changed in BIOS the first main timings and the rest is on AUTO, do you guys suggest chaning something more? Also another question, when I set XMP, does it change those subtimings showed in ASRock Timing Configurator? Because when I set XMP and go back in BIOS, all of them are set on AUTO... Thanks!

XMP only sets primaries and tRFC. The rest is up to your motherboard.

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