*Official* Intel DDR4 24/7 Memory Stability Thread - Page 1119 - Overclock.net - An Overclocking Community
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post #11181 of 11302 (permalink) Old 01-14-2020, 09:29 AM
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Well, I said I wouldn't go 1.5 vdimm, but look at the results...pretty excited! And I haven't even touched the 3rd timings from their xmp value. Going to do a 2500+ pass of HCI and an 8 hr run of occt large to make sure things are solid before I start messing with the next settings.
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post #11182 of 11302 (permalink) Old 01-14-2020, 10:23 AM
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Quote: Originally Posted by sword fan View Post
Well, I said I wouldn't go 1.5 vdimm, but look at the results...pretty excited! And I haven't even touched the 3rd timings from their xmp value. Going to do a 2500+ pass of HCI and an 8 hr run of occt large to make sure things are solid before I start messing with the next settings.
Remember that incorrect secondary and tertiary timings can affect stability!
1 group:
tRAS=33
tRC=48

2 group:
tWR=14; WRPRE=4+CWL+WR=4+14(13)+14=32(31)
tRTP=7; RDPRE=RTP=7
tWTR_L=7
tWTR_S=4
tCWL may be 14?

3 group:
ALL dr & dd = 0
tRDRD_sg=6
tRDRD_dg=4
tRDWR_sg&dg=10 if tCWL=14 or 11 if tCWL=13
tWRRD_sg=27 if tCWL=14 or 26 if tCWL=13 (WRRD_sg=6+CWL+WTR_L)
tWRRD_dg=24 if tCWL=14 or 23 if tCWL=13 (WRRD_dg=6+CWL+WTR_S)
tWRWR_sg=6
tWRWR_dg=6
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post #11183 of 11302 (permalink) Old 01-14-2020, 10:41 AM
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Quote: Originally Posted by wholeeo View Post
Hey there!

Not from auto settings at all. I've almost touched all the timings and have made considerable performance increases from stock considering these aren't much to begin with.
ug - yeah, I failed to post the pic with the timings in question:
Quote: Originally Posted by Gen. View Post
On an estimation. How do I get a stable 4200?

Settings: https://yadi.sk/d/eIBy_VCxF4e8-A
what Vdimm??
Quote: Originally Posted by sword fan View Post
Well, I said I wouldn't go 1.5 vdimm, but look at the results...pretty excited! And I haven't even touched the 3rd timings from their xmp value. Going to do a 2500+ pass of HCI and an 8 hr run of occt large to make sure things are solid before I start messing with the next settings.
The sticks are fine with 1.5V VDimm... especially Sammy B and D. Just monitor the temps of the sticks - above 40C random bit-flips can happen (more frequently). There are kits that have an XMP of 1.5V. The manufacturers work with intel on each platform to define the VDimm "AOR" (acceptable operating range) since it impacts the IMC more so than the ram sticks. Intel is certifying 1.5V XMPs... so 1.5V is "within spec" - as a ram overclock. XMP is an OC on the CPU ,mainly because of the IMC load, hence INtel's (and AMD's) participation in the process.
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post #11184 of 11302 (permalink) Old 01-14-2020, 10:49 AM
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Quote: Originally Posted by Gen. View Post
Remember that incorrect secondary and tertiary timings can affect stability!
1 group:
tRAS=33
tRC=48

2 group:
tWR=14; WRPRE=4+CWL+WR=4+14(13)+14=32(31)
tRTP=7; RDPRE=RTP=7
tWTR_L=7
tWTR_S=4
tCWL may be 14?

3 group:
ALL dr & dd = 0
tRDRD_sg=6
tRDRD_dg=4
tRDWR_sg&dg=10 if tCWL=14 or 11 if tCWL=13
tWRRD_sg=27 if tCWL=14 or 26 if tCWL=13 (WRRD_sg=6+CWL+WTR_L)
tWRRD_dg=24 if tCWL=14 or 23 if tCWL=13 (WRRD_dg=6+CWL+WTR_S)
tWRWR_sg=6
tWRWR_dg=6

Thanks for your input, may I ask why these settings would be preferable/more stable? What is the reason behind using odd or even numbers where these settings are concerned?
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post #11185 of 11302 (permalink) Old 01-14-2020, 10:51 AM
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Quote: Originally Posted by Jpmboy View Post
The sticks are fine with 1.5V VDimm... especially Sammy B and D. Just monitor the temps of the sticks - above 40C random bit-flips can happen (more frequently). There are kits that have an XMP of 1.5V. The manufacturers work with intel on each platform to define the VDimm "AOR" (acceptable operating range) since it impacts the IMC more so than the ram sticks. Intel is certifying 1.5V XMPs... so 1.5V is "within spec" - as a ram overclock. XMP is an OC on the CPU ,mainly because of the IMC load, hence INtel's (and AMD's) participation in the process.
Thanks for the reassurance!
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post #11186 of 11302 (permalink) Old 01-14-2020, 03:23 PM
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Worked my voltage down for IO and SA. Very pleased that this chip can do 17/4200 1T at only 1.17v IO and SA.

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post #11187 of 11302 (permalink) Old 01-14-2020, 04:06 PM
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Hello @Gen. Can I get some advise review of my timings? Thanks!
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post #11188 of 11302 (permalink) Old 01-15-2020, 08:55 AM
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Quote: Originally Posted by ViTosS View Post
Hello @Gen. Can I get some advise review of my timings? Thanks!
Hi!

I speak Russian because I'm from Russia. If necessary, translate it through an interpreter. Thanks.

Hi!
4000 MHz

tCL=16
tRCD=16(17)
tRP=16(17)
tRAS=36(37)
tRC=52(54)
tCR=1 or 2

tWR=16
tRFC=320 (-8; должно быть кратно 8, затем опустите)
tRRD_L=6(4)
tRRD_S=4
tWTR_L=8
tWTR_S=4
tRTP=8
tFAW=16
tCWL=16

tREFI=65534!
tCKE=8
Все dr (если 2 плашки всего) & dd (если 1Rx8GB)=0
tRDRD_sg=6
tRDRD_dg=4
tRDWR_sg=10
tRDWR_dg=10
tWRRD_sg=30
tWRRD_dg=26
tWRWR_sg=6
tWRWR_dg=4

P.S.
Регулировка tWR через WRPRE:
WRPRE = 4+CWL+WR=4+16+16=34
Регулировка RTP через RDPRE:
RDPRE=RTP=8

P.S.S.
Тайминги tCCD_S и tCCD_L в ASUS UEFI отсутствуют.

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Fast Boot Memory=Disable.

DRAM=1.50V, Training=1.45V-1.50V, IO=1.25, SA=1.30.
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post #11189 of 11302 (permalink) Old 01-15-2020, 11:37 AM
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Any suggestions guys?
IO at 1.2v and SA at 1.23~ Dram is set at 1.43v (1.45v)
The sticks I use for this build : Team Group Xtreem T-Force 8PACK 4500MHz CL 18-20-20-44 1.45v

Any how.. these settings seems to be pretty stable (I am still testing)
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post #11190 of 11302 (permalink) Old 01-15-2020, 01:58 PM
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Quote: Originally Posted by Dwofzz View Post
Any suggestions guys?
IO at 1.2v and SA at 1.23~ Dram is set at 1.43v (1.45v)
The sticks I use for this build : Team Group Xtreem T-Force 8PACK 4500MHz CL 18-20-20-44 1.45v

Any how.. these settings seems to be pretty stable (I am still testing)
Looks good
Voltages look nice

Any chance of 1T?
tREFI could probably go up a bit

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