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*Official* Intel DDR4 24/7 Memory Stability Thread - Page 436

post #4351 of 4427
Quote:
Originally Posted by misoonigiri View Post

Regarding tRAS you may want to read the discussion before & after this post,
http://www.overclock.net/t/1569364/official-ddr4-z170-z270-and-x99-24-7-memory-stability-thread/3750#post_25801780

Of course most of it is beyond me, but hopefully it is helpful to you smile.gif
You're not alone biggrin.gif
Thanks for the link. That takes care of tRAS.
What about the rest of the settings?
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post #4352 of 4427
Quote:
Originally Posted by Frosted racquet View Post

I need a little help with the timings. Are there any mistakes with these settings when it comes to the recommendations/formulas? Warning: Spoiler! (Click to show)



I've previously had 15-15-15-35 1T with tRTP 10 which passed 2000+% MemTest and 8h GSAT, but as I've seen here the minimum for tRAS is 38.
tFAW should be 20 instead of 33 in my case? Anything else I need to change?
My RAM is Kingston HX424C12SBK2/16 with Hynix chips.
Is it weird that I've passed MemTest and GSAT with the previous incorrect settings?

Quote:
Originally Posted by Frosted racquet View Post

You're not alone biggrin.gif
Thanks for the link. That takes care of tRAS.
What about the rest of the settings?
Hi, it's best to refer to the experts' posts for guidance smile.gif
Eg, tFAW min is 4X tRRD_S

So if you want to lower tFAW, I guess you shouldn't go below 20 at current setting tRRD_S = 5?
I probably can't comment further on other settings as I'm likely in the same boat as you tongue.gif
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post #4353 of 4427
-Deleted, not applicable-
Edited by misoonigiri - 4/30/17 at 8:41am
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post #4354 of 4427
I think I've crushed the sudden power shut off issue that has been plagueing my system since i got the new CPU back from Intel (which, by the way, is a VERY good chip). Unfortunately, ~3250MHz on the RAM is about as high as the IMC will go.

Some preliminary stats. Warning: Spoiler! (Click to show)
1064f5ab5d6f4cb799e7f5dc7240e2af.png
post #4355 of 4427
Quote:
Originally Posted by ssateneth View Post

I think I've crushed the sudden power shut off issue that has been plagueing my system since i got the new CPU back from Intel (which, by the way, is a VERY good chip). Unfortunately, ~3250MHz on the RAM is about as high as the IMC will go.

Some preliminary stats. Warning: Spoiler! (Click to show)
1064f5ab5d6f4cb799e7f5dc7240e2af.png

It's not the IMC. Try 125 strap and you can do 3333. wink.gif

Very nice chip there. TFAW and TCWL can be set lower too.
post #4356 of 4427
Quote:
Originally Posted by mus1mus View Post

It's not the IMC. Try 125 strap and you can do 3333. wink.gif

Very nice chip there. TFAW and TCWL can be set lower too.

Believe me, I've tried. I fought with this chip a lot to get -anything- higher than 3200. Strap 125 doesnt play well. Always gets stuck on code BD. If I try to 'trick' it by decreasing BCLK to 120 so its 3200MHz then increase it to 125 after the fact, it gets to BF. It's not a broadwell chip, so I've accepted 3200 for now. If I give in to intel for an X299 setup, I'm sure I'll get closer to or meet the rated 3600MHz this kit claims to meet.

SA is already 1.15v (needs a minimum of 0.925, or +0.1v, to not cause freezes at everything default, RAM 3200 1.35v 16-18-18-38-2T everything else auto)
VCCIO already up to 1.2v
Cache already up to 1.3v (needs a minimum of 1.025v to not cause freezes as the same setting as SA minimum)

3200MHz RAM @ 1.35v 16-18-18-38-2T and 4.7GHz 1.3v core / 3.0GHz Cache needs a minimum of 1.025v on cache and 0.925v on SA to be 12 hour GSAT stable. I'm working on getting higher VDIMM voltage stable right now. I havent gotten 1.5VDIMM stable yet; threw 3 errors over 12 hour GSAT with grossly inflated cache, SA, and VCCIO voltages. Once I get a higher VDIMM set though, I believe I can work on getting timings down
post #4357 of 4427
Quote:
Originally Posted by ssateneth View Post

Believe me, I've tried. I fought with this chip a lot to get -anything- higher than 3200. Strap 125 doesnt play well. Always gets stuck on code BD. If I try to 'trick' it by decreasing BCLK to 120 so its 3200MHz then increase it to 125 after the fact, it gets to BF. It's not a broadwell chip, so I've accepted 3200 for now. If I give in to intel for an X299 setup, I'm sure I'll get closer to or meet the rated 3600MHz this kit claims to meet.

SA is already 1.15v (needs a minimum of 0.925, or +0.1v, to not cause freezes at everything default, RAM 3200 1.35v 16-18-18-38-2T everything else auto)
VCCIO already up to 1.2v
Cache already up to 1.3v (needs a minimum of 1.025v to not cause freezes as the same setting as SA minimum)

3200MHz RAM @ 1.35v 16-18-18-38-2T and 4.7GHz 1.3v core / 3.0GHz Cache needs a minimum of 1.025v on cache and 0.925v on SA to be 12 hour GSAT stable. I'm working on getting higher VDIMM voltage stable right now. I havent gotten 1.5VDIMM stable yet; threw 3 errors over 12 hour GSAT with grossly inflated cache, SA, and VCCIO voltages. Once I get a higher VDIMM set though, I believe I can work on getting timings down

I have tried 7 5930Ks and none of them had an issue with 3333. thumb.gif

Try this:

Set Strap to 125
Set DRAM to BCLK ratio to 100:133
Set 3333
Set Timings.
Edited by mus1mus - 5/1/17 at 5:15pm
post #4358 of 4427
Quote:
Originally Posted by misoonigiri View Post

Hi Enterprise24, I believe Jpmboy meant tRAS=CAS+tRCD+tRTP (+/-2)
At your old settings with tRTP originally at 6
I think he meant minimum was 17-18-18-39-2T instead of 28 which was too low

Edited

yes.. sorry. a bad typo. tRTP, not tRRD
Thanks! +1
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post #4359 of 4427
Quote:
Originally Posted by mus1mus View Post

I have tried 7 5930Ks and none of them had an issue with 3333. thumb.gif

Try this:

Set Strap to 125
Set DRAM to BCLK ratio to 100:133
Set 3333
Set Timings.

Huh. I thought this was magic; It posted. I wanted to see how far I could go. 3666 was no post. Adjusted BCLK to make it a nice 3400. I was running some high cache clocks so there was some weirdness (blue screens, etc). But after a 3rd restart, I can no longer use those settings you posted; it just gets stuck on BD POST code. Any suggestions for voltages? I cant remember what settings I used. On hindsight, i shouldve saved the settings as an OC profile.
post #4360 of 4427
Quote:
Originally Posted by ssateneth View Post

Huh. I thought this was magic; It posted. I wanted to see how far I could go. 3666 was no post. Adjusted BCLK to make it a nice 3400. I was running some high cache clocks so there was some weirdness (blue screens, etc). But after a 3rd restart, I can no longer use those settings you posted; it just gets stuck on BD POST code. Any suggestions for voltages? I cant remember what settings I used. On hindsight, i shouldve saved the settings as an OC profile.

Don't stray off 125 BCLK. If you want it higher, try Strap 167.

167 Strap
BCLK to RAM Ratio: 100:133
RAM Frequency: 3555

emulate the one in my sig if you can. But remember, that is already boardering on the platform limitation. Always aim to be within defined BCLK strap.

Again, keep it realistic.
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