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ROG Crosshair VI overclocking thread - Page 833

post #8321 of 17742
Quote:
Originally Posted by elmor View Post

Subtimings are set differently for each DRAM Ratio, which is why you're getting different results even though the frequency is the same. We can't control this at the moment.

Hey @elmor, can you please clarify this a bit? What does the DRAM ratio have to do with subtimings? Does each ratio set it's own subtimings? What are they?
post #8322 of 17742
Quote:
Originally Posted by 1TM1 View Post

I had 3200-16 (TridentZ with Hynix M-die) run fine with 1800X at 3200-16 on two motherboards (C6H bios 0702 and X370-Pro bios 0502) then no better than 2933 with 1700X (tried bios 0502, 0504, 0511, 0515). Reverted to 1800X. Easy both times at 3200 just set speed and timings and it works.

Clearly the reason to go with the TridentZ. My Ripjaws V 2x16 3200-16 16-18-18-38 is NOT working well going above 2666 and a 1800X. 0902 and 0083 both won't go to even 2933 and be standard.
post #8323 of 17742
Quote:
Originally Posted by madweazl View Post

I'm having similar results. I havent been able to find a truly stable setup for 3600 but this worked out very well for 3566 (at least I'm going in the right direction). This is the first time it has passed a pair of simultaneous Handbrake jobs (I know what your dirty minds were think, shame, shame...).

BCLK - 121.6
CPU X - 32.00
Vcore - 1.43125 (may be able to lower this)
SOC - 1.225 (reported as 1.206 by SVI2)
DRAM - 1.47 (vboot the same)
PLL - 1.82
LLC 5
DDR 3566 (not even sure which strap that is anymore)

My daily driver OC is just a pstate OC

BCLK - 100.0
FID - A0 (40x)
VCORE - offset + 0.00625
SOC - 1.0
DRAM & VBOOT - 1.35
LLC Auto
DDR 3200 CL14-14-14-34

When I bump up the BCLK using the 3200 ratio I need to bump up the:
BCLK - 109.4
FID - 93? (36.75x)
SOC - 1.10
DRAM & VBOOT - 1.375
VTTDR - 1/2 ish DRAM
DDR 3500 CL14-14-14-34

Edit: these VCORE values are from 1002 not the new BIOS
Edited by jugs - 4/10/17 at 6:21pm
post #8324 of 17742
The amount of RAM mis-information is starting to get a little disheartening.

Nobody has provided the consumers a half decent answer as to why RAM speeds are getting hamstringed so much. The most we have gotten is "AGESA code isn't great." That's it.
    
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post #8325 of 17742
I've been driving myself insane trying to get this 3200 kit to work. I finally tried something madweazl said in passing and it seems to be working great. I just set DRAM voltage and DRAM Boot voltage to the same thing (1.4V) and it worked like magic. Thanks for that, madweazl.
post #8326 of 17742
Quote:
Originally Posted by zeroarmy27 View Post

I've been driving myself insane trying to get this 3200 kit to work. I finally tried something madweazl said in passing and it seems to be working great. I just set DRAM voltage and DRAM Boot voltage to the same thing (1.4V) and it worked like magic. Thanks for that, madweazl.

Yea, I cant figure out the deal with that one but it usually seems to provide the best results for me. Another member mentioned voltage being to high as an issue with the memory training and that has been consistent with my findings as well; the settings I posted a few back wont work at 1.48 (dram), work ok with 1.475 and 1.470 but train much quicker at 1.46. Say what? LOL.
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post #8327 of 17742
Quote:
Originally Posted by Tyrluk View Post

I did just get a response from G.Skill which may lead to something here with the 1700 just being unable to do 3200MHz memory reliably. See the question and response from my email with G.Skill below --

Tyrluk: Are you aware of any issue with the Ryzen CPU integrated memory controller where they would *not* be able to run the memory at 3200MHz?
G.Skill: Yes, generally the 1800X or 1700X is required for DDR4-3200.
maybe that's gskill way of stating that in house, with their own testing, they have only done certify testing with 3200mhz kits with x series ryzens and not the regular 1700.
Quote:
Originally Posted by Tyrluk View Post

Right, I would not have thought that to be a possible root cause either.

Especially given that AMD posted a picture of a Ryzen 1700 running DDR4-3400 on an ASUS C6H board on 2017-02-27.
https://twitter.com/AMDRyzen/status/836285599636127744

Not trying to start unsubstantiated rumors here -- just reporting back the response I received directly from G.Skill support.

At this point I am just stumped. I will probably buy a second CPU to test out -- although I am a little wary of getting one that *does* run memory at 3200MHz but does not overclock as well as my 3.9GHz proc today.
i do wonder if amd was able to achieve that 3400 by bclk overclocking since they did use a crosshair which has a bclk generator. nevertheless, there hasn't been any official statement that has stated the 1700 is not highly binned for 2933mhz and higher and i doubt there is such a limit by design. unless amd is also binning poor performing imc for the 1700 sku but i doubt they are since, officially, the imc in the 1700x and the 1800x appear to be the same. with 2666mhz being the highest official ratio supported. so amd, at minimum, is binning for 2666mhz.
post #8328 of 17742
Quote:
Originally Posted by madweazl View Post

Yea, I cant figure out the deal with that one but it usually seems to provide the best results for me. Another member mentioned voltage being to high as an issue with the memory training and that has been consistent with my findings as well; the settings I posted a few back wont work at 1.48 (dram), work ok with 1.475 and 1.470 but train much quicker at 1.46. Say what? LOL.

That could be a termination voltage issue. It's meant to be setting it at half the DDR voltage, but maybe "auto" isn't doing that correctly.

Might be worth setting that manually.
post #8329 of 17742
Quote:
Originally Posted by Zamoldac View Post

Suddenly my board doesn't shutdown properly, it restarts instead. I think i saw this issue here before, can't remember what was the fix mad.gif . This is after 2+ weeks of ok operation.
I'm on bios 1002.

Bios reset on 1002 - same behavior
Updated to 0083 - same behavior
Tried various windows tweaks - no dice

@elmor : Any ideea to what may cause this sudden behavior? It's really annoying to not be able to shut down the pc redface.gif
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post #8330 of 17742
Quote:
Originally Posted by SpecChum View Post

That could be a termination voltage issue. It's meant to be setting it at half the DDR voltage, but maybe "auto" isn't doing that correctly.

Might be worth setting that manually.

You may right, I haven't checked that in a while and probably haven't adjusted it with most of these changes. Who know's where it's currently set (probably close as I haven't strayed far from these voltages) LOL.
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