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*Official* Intel DDR4 24/7 Memory Stability Thread - Page 205

post #2041 of 5786
Quote:
Originally Posted by superkyle1721 View Post

I was under the impression RTL was altered by CL and or clock speed.

It is.

RTL is related to CL, tWCL, uncore clock, and IOL. You can force it to be tighter than it otherwise would be at a given clock and CL/tWCL by tightening the IOLs.

If I leave my IOLs at AUTO they default to 8 with my current settings, which makes my RTLs 49. However, with some more VCCSA and some VL adjustments, I can go as low as four, all other things being identical, which gives me RTLs of 45...and a fair memory performance boost.
Quote:
Originally Posted by KedarWolf View Post

Not sure in BIOS what tWCL is but if it's DRAM Write Latency I put it on 14

That's tWCL.
Quote:
Originally Posted by KedarWolf View Post

On my motherboard the highlight says tWL. And it is 14 on Auto. Won't boot at 13 though. redface.gif

The minimum tWCL/tWL/CAS write latency/whatever you can get away with usually gets closer to your CL as you scale up in frequency. Can vary with ICs used though.

With my lower clocked Micron chips I usually run CL - 3 for tWCL.
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post #2042 of 5786
Here's my latest 6900K tweak, I think I'll leave it here until the next BIOS comes up ...




The 21 tRAS looks absurd based on basic rules but does seem to make some small difference. Although I was able to get tWR and tCKE manually down quite a bit, I could not budge tWCL even one down from the auto set 14 without immediate bluescreen even @ 1.42v. Everything else I have running now @ 1.38v eventual with an 80 minute GSAT pass and 2.5 hours RealBench stress.
post #2043 of 5786
Oops - forgot this guy ...

post #2044 of 5786
Quote:
Originally Posted by djgar View Post

Oops - forgot this guy ...


one for you too>>>
Tight!
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post #2045 of 5786
Quote:
Originally Posted by Jpmboy View Post

one for you too>>>
Tight!

That's gonna leave a (mental) mark eek.giflaughingsmiley.gif
post #2046 of 5786
Can't you run the ram at 3400 since you have a 6900K now?
I'd try 4600 core 3800 cache 3400 ram if I were you.
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post #2047 of 5786
Quote:
Originally Posted by Kimir View Post

Can't you run the ram at 3400 since you have a 6900K now?
I'd try 4600 core 3800 cache 3400 ram if I were you.

Believe me I have tried but I was still getting some GSAT errors at 3400 14-15-15-CR2 @ 1.42v eventual, so it wasn't worth it and if I got that speed working I don't think it would be faster than the 3370 14-15-14-CR1 I have at 1.38v. I'm doing 3790GHz cache so that's pretty close to 3800 smile.gif. I don't think 4600GHz is feasible with my processor at least ATM. I'm waiting for some BIOS improvements since the current one is still pretty BW-E green.
post #2048 of 5786
Quote:
Originally Posted by Jpmboy View Post

Quote:
Originally Posted by djgar View Post

Oops - forgot this guy ...


one for you too>>>
Tight!

Do you realize the amount of therapy I'm going to need since I just saw that?
 
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post #2049 of 5786
laughingsmiley.gif

an indelible dent in my neurons.
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post #2050 of 5786
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What do you get if you cross the Michelin man with a banana.
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