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post #10501 of 10731 (permalink) Old 11-13-2019, 03:34 PM
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Quote: Originally Posted by bl4ckdot View Post
I went with 2 kits of https://www.overclockers.co.uk/team-...my-08l-tg.html
For 280€ express shipping included.
For that price, might as well try my luck, and I heard very good thing about them.
I still have my 3600c16 kit (same one as jpmboy) to compare
Just FYI, the 3200c14s and 3600c16s are the same sticks... 400Hz for 2 CAS timings is pretty much standard at 1.35V. (Hence the higher bin 3600c15 kits). The 3200c14s I have (8x8GB Zs sticks and 4x8GB sticks FlareX for AMD) work the same as the 8x8GB 3600c16 sticks I have. In fact, the FlareX kit(s) do better at frequencies >4500 on the Apex X... no idea why that is so. The 3600c15 kits read as D-die 17nm interestingly.
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post #10502 of 10731 (permalink) Old 11-13-2019, 06:34 PM
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The chase to sub 40ns latency continues...

Where can i get my timings tighter?
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post #10503 of 10731 (permalink) Old 11-13-2019, 06:49 PM
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Quote: Originally Posted by marcelo19941 View Post
The chase to sub 40ns latency continues...

Where can i get my timings tighter?
Your timings are as tight as they can probably go lol.
There's basically two ways to get your latency any lower. Somehow manage to get CL15-16-16 to run or drastically lower RTL/IO by setting RTL Initial as low as it'll go (probably somewhere around 65) and then setting the offset higher than 21 and seeing how high it will POST / Boot.

Also, tRAS 30 with 16-16-16 won't do you any good. Minimum required is 32 anyway so just set it there.

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post #10504 of 10731 (permalink) Old 11-13-2019, 07:04 PM
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Quote: Originally Posted by marcelo19941 View Post
The chase to sub 40ns latency continues...

Where can i get my timings tighter?
best way to get at that would be to lower the RTLs and IOls. I find that at these frequencies you may need to stretch the ChA and B latency for stability, so for example I can get 4400c16 stable (8086K, APEX X) at 59/61/6/7, but 59/60/6/6 or 60/61/7/7 (or 6s) would fail GSAT. High round trip latency leads to ... well, higher latency.
Are those RTLs from the Auto setting?

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CPU
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post #10505 of 10731 (permalink) Old 11-13-2019, 07:11 PM
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Quote: Originally Posted by Imprezzion View Post
Your timings are as tight as they can probably go lol.
There's basically two ways to get your latency any lower. Somehow manage to get CL15-16-16 to run or drastically lower RTL/IO by setting RTL Initial as low as it'll go (probably somewhere around 65) and then setting the offset higher than 21 and seeing how high it will POST / Boot.

Also, tRAS 30 with 16-16-16 won't do you any good. Minimum required is 32 anyway so just set it there.
this is a soft "rule". You can lower tRAS until either of two things happen... loss of stability or loss of performance gains if any are seen. +/- 2 is a good range around the timing interval as a start as there may be an embedded offset in the bios (and only your bios doctor knows for sure ) but it is best to see if the performance and stability bottom out as you lower tRAS - easy since it will show up fast.

ASUS Z370/Z390 Motherboard Support Thread, Coffee Lake OC Guide
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X299
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CPU
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CPU
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Rampage VI Extreme Omega
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post #10506 of 10731 (permalink) Old 11-13-2019, 10:41 PM
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Quote: Originally Posted by marcelo19941 View Post
The chase to sub 40ns latency continues...

Where can i get my timings tighter?
That's really weird, you have way better timings and frequency than me but at the same time worse latency...

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post #10507 of 10731 (permalink) Old 11-14-2019, 02:29 AM
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Does anybody happen to know what the 240k FFT (not in-place) test in Prime95 is for — memory, imc, cache, core?
That's the only thing where one worker exits. I'm curious where to start fixing it.

Last edited by lionc; 11-14-2019 at 02:32 AM.
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post #10508 of 10731 (permalink) Old 11-14-2019, 02:33 AM
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Quote: Originally Posted by marcelo19941 View Post
The chase to sub 40ns latency continues...

Where can i get my timings tighter?
You could try CR 1T
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post #10509 of 10731 (permalink) Old 11-14-2019, 04:33 AM
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Quote: Originally Posted by Jpmboy View Post
best way to get at that would be to lower the RTLs and IOls. I find that at these frequencies you may need to stretch the ChA and B latency for stability, so for example I can get 4400c16 stable (8086K, APEX X) at 59/61/6/7, but 59/60/6/6 or 60/61/7/7 (or 6s) would fail GSAT. High round trip latency leads to ... well, higher latency.
Are those RTLs from the Auto setting?
And how is your impression of running staggered RTL/IO (59/61/6/7) ?
If i recall there shouldn't be too much of performance loss .
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post #10510 of 10731 (permalink) Old 11-14-2019, 05:25 AM
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Quote: Originally Posted by bxcounter View Post
And how is your impression of running staggered RTL/IO (59/61/6/7) ?
If i recall there shouldn't be too much of performance loss .
As long as they aren't further than 2 apart. Any further indicates bad training as far as my knowledge goes.

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