*Official* Intel DDR4 24/7 Memory Stability Thread - Page 1156 - Overclock.net - An Overclocking Community

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*Official* Intel DDR4 24/7 Memory Stability Thread

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post #11551 of 13637 (permalink) Old 02-20-2020, 01:58 AM
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Quote: Originally Posted by chrcoluk View Post
I meant the secondary, tertiary timings.

Also that only gives a score of 235 so is poor latency vs 3000/12.

Are you saying that I can just flip primary timings, without any adjustments on other timings to make it work?

What I am looking for is something within 10% of 3000/12 latency if possible at higher speeds but I am not going to take higher speeds with such a big latency hit.

Do you have settings e.g. to make 3200/13 work?
Post result of aida 64 memorybenchmark 3000 c12. Then it's possible du guide you better

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post #11552 of 13637 (permalink) Old 02-20-2020, 07:52 AM
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Quote: Originally Posted by Imprezzion View Post
4000 CL16 is identical in base latency to 3000 CL12 not counting the secondaries.
How did you calculate this?

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post #11553 of 13637 (permalink) Old 02-20-2020, 08:25 AM
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Quite simple. CL is purely the amount of clocks it takes to do a certain action. 3000/12 is 250, 4000/16 is also 250. So both actions take the same length of time (8 nanoseconds). This of course ignores all other timings except CL but it's a very rude but correct base calculation. If you cannot get at least CL16 on 4000 it isn't worth it latency wise compared to 3000 CL12.

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post #11554 of 13637 (permalink) Old 02-20-2020, 08:50 AM
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Quote: Originally Posted by Imprezzion View Post
Quite simple. CL is purely the amount of clocks it takes to do a certain action. 3000/12 is 250, 4000/16 is also 250. So both actions take the same length of time (8 nanoseconds). This of course ignores all other timings except CL but it's a very rude but correct base calculation. If you cannot get at least CL16 on 4000 it isn't worth it latency wise compared to 3000 CL12.
Higher frequency makes higher bandwidth and lower latency too. So you want high clocks, with low latency.

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post #11555 of 13637 (permalink) Old 02-20-2020, 09:27 AM
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Quote: Originally Posted by Imprezzion View Post
Quite simple. CL is purely the amount of clocks it takes to do a certain action. 3000/12 is 250, 4000/16 is also 250. So both actions take the same length of time (8 nanoseconds). This of course ignores all other timings except CL but it's a very rude but correct base calculation. If you cannot get at least CL16 on 4000 it isn't worth it latency wise compared to 3000 CL12.
I'm pretty sure that is for the first bit. On a 64bit system it gets more clear:
MHz CasL ns/cycle first bit 8bits 64 bits
3000 12 0.33 4.00 6.33 25.00
4000 16 0.25 4.00 5.75 19.75

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post #11556 of 13637 (permalink) Old 02-20-2020, 12:58 PM
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Quote: Originally Posted by Nizzen
Pleace share aida64 memory bench result

it is here

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post #11557 of 13637 (permalink) Old 02-20-2020, 01:02 PM
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Quote: Originally Posted by GAN77 View Post
16-16-34-4266 F4-4000C19D-32GTZKK
strong result!, very nice performance
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post #11558 of 13637 (permalink) Old 02-20-2020, 01:47 PM
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Quote: Originally Posted by swddeluxx View Post
it is here

Very nice. I'm looking for a new motherboard and am trying to decide between the Gene and Dark. I see some really impressive memory OC being done with the Gene.
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post #11559 of 13637 (permalink) Old 02-20-2020, 02:21 PM
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Hey, long time guys.

Anyone with a Maximus X Hero that has some memory OC above 4000 can post some results?

I have a new set of RAM from ADATA that are 3600 CL17-18-18 B-DIE (4x8GB ) that I found some reviews where they achieved 4600Mhz of OC on it on a z390.

I did some quick tests here and I can't even post above 4000mhz.

I was not able to get 4000mhz on the exact same latency as the review (they got with CL17-18-18-38-2T I needed 17-18-18-39), but ANYTHING above 4000Mhz it will not even post.

I've tried even leaving the timings on Auto and using VDIM 1.5 and VSSA VSCO 1.35, nothing.

Is this board not able to post more than 4000mhz? I'm on latest bios 2203.

To be honest I'm happy with 4000mhz, but wanna make sure i'm not just sub-utilizing the RAMs and could go higher.

Any tips i'll appreciate.

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post #11560 of 13637 (permalink) Old 02-20-2020, 02:43 PM
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Spoiler!


Utilize this post and focus on getting your rtl's figured out in regards to getting them set on your board and I think you'll get it stable.

https://www.overclock.net/forum/27784556-post7836.html


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