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post #12931 of 17696
Quote:
Originally Posted by hotstocks View Post

Bios 1007 has been good for me so far, but question for @chew @raja or other gurus:
I have gotten my G.skill 3600 16-16-16-36 memory to 3600 mhz! That is the good new,
the bad new is it is rated at those exact timings at 1.35v and works at 1.35v on my old
Intel system. On my Ryzen it need 1.42v to be stable. Firstly is 1.42v safe 24/7 on a kit
rated at 1.35v, and secondly why the hell does it need so much more volts on Ryzen
to run at the exact same speed as on Intel?

DDR4 can run up to 1.5v for Microsoft XMP certification and is capable of running well beyond that as well (has a thermal limit of roughly 85°). 1.42v is fine. 3600 at those timings is pretty good at that voltage honestly (I haven't been able to find HCI stable settings for 3600 yet). As for why it needs the extra voltage, I don't know the answer.
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post #12932 of 17696
Quote:
Originally Posted by gupsterg View Post

RB Stress Mode for me needed vastly less VCORE than Y-Cruncher/x264, both CPUs. For example a profile that pass 2hrs RB, failed loop 1 of Y-Cruncher/X264. For some it differs, RB seem to "flip" their rig quicker.

Like with my rig biggrin.gif, where Y-cruncher / x264 / AIDA64 passes easily without any issues, RB throws WHEA errors more quicker smile.gif
post #12933 of 17696
Quote:
Originally Posted by hotstocks View Post

Bios 1007 has been good for me so far, but question for @chew @raja or other gurus:
I have gotten my G.skill 3600 16-16-16-36 memory to 3600 mhz! That is the good new,
the bad new is it is rated at those exact timings at 1.35v and works at 1.35v on my old
Intel system. On my Ryzen it need 1.42v to be stable. Firstly is 1.42v safe 24/7 on a kit
rated at 1.35v, and secondly why the hell does it need so much more volts on Ryzen
to run at the exact same speed as on Intel?

I dont think its a problem. Few days ago somebody posted a Youtube link with a AMD tech showing how to OC. What i saw is, he immediately started with 1.5v on RAM.

With Ryzen: Im running my ram @ 1.375 even on 3456Mhz... Higher voltage gives me booting issues rolleyes.gif

On my last i7 i had my Gskills (ddr4) also at 1.5v / 3200mhz. And its still running the OC very smooth
post #12934 of 17696
Quote:
Originally Posted by hotstocks View Post

Bios 1007 has been good for me so far, but question for @chew @raja or other gurus:
I have gotten my G.skill 3600 16-16-16-36 memory to 3600 mhz! That is the good new,
the bad new is it is rated at those exact timings at 1.35v and works at 1.35v on my old
Intel system. On my Ryzen it need 1.42v to be stable. Firstly is 1.42v safe 24/7 on a kit
rated at 1.35v, and secondly why the hell does it need so much more volts on Ryzen
to run at the exact same speed as on Intel?

AGESA 1.0.0.5 should fix these memory issues. The why is something you might want to ask AMD about, but since the fix will come from their end, I am not sure if the answer would actually mean much.
post #12935 of 17696
Quote:
Originally Posted by Targonis View Post

AGESA 1.0.0.5 should fix these memory issues. The why is something you might want to ask AMD about, but since the fix will come from their end, I am not sure if the answer would actually mean much.

I am really worried that people (we) might be getting our hopes up too much. People seem to expect that 1.0.0.5 will fix everything memory related and that everyone will be able to easily run 3200 at C14 @ 1.35v no matter the chip/brand.

I wish that this all becomes true but again AMD has never promised specifics and their official support is a lot lower...
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post #12936 of 17696
Quote:
Originally Posted by gupsterg View Post

[post 12869]
Quote:
Originally Posted by kaseki View Post

I think the bolded text may be a clue for the cold boot issue. Unless the BIOS default ProcODT resistance is close to what is needed, then losing the value upon booting certainly won't help the boot success.

Prior to AMD code detecting error with memory training it would have used the ProcODT saved on previous boot, when the training failed it resets to [Auto].

Take time to sleep, and one is transported back to the Pleistocene era on this thread. smile.gif

Mr. gupsterg: Generally I find your invaluable advice easy to understand. However, I have a problem with the above sentence. Would you mind providing a new translation?


Separately, addressing comments I can no longer find and perhaps risking restating things that Raja has written but in a different form:

Between the CPU and the RAM is a data path that acts as a transmission line. Just as light in air reflects from a pane of glass due to mismatched impedances (usually referenced in the form of indices of refraction), so too does a signal in a transmission line reflect from a load impedance mismatched to the characteristic impedance of the transmission line. The same Maxwell Equations apply to each. Mismatch has a significant effect at radio frequencies, and here we are playing with microwave frequencies above a gigahertz when we communicate between CPU and RAM.

Surprisingly, but perhaps for reasons I'm not privy to, we evidently don't have some JEDEC-defined consistency between the transmission line characteristic impedance, RAM source and sink impedances, and CPU source and sink impedances. ProcODT helps improve this; that is, helps reduce the mismatch. Reducing mismatch reduces waveform reflections so that they have less influence on the correct interpretation of the data flowing in the data path (MB traces).

Demoniacstar
wrote somewhere in this thread and I saved a copy:
just to clarify this procODT debacle...lol...
when you set procODT it will stay the same always as long as the system accepts the setting you choose .....if it is set to a ohmes the system does not like it will not stay the same ...it will in fact revert back to auto....and yes if you go into bios and set the procODT it does say no settings have changed but believe me if the system accepts and uses the settings it stays there
unless ....you go into bios and start tweaking on the ram settings or cpu settings again ....any other changes after setting procODT will cause it to switch back to auto again....not always .....but sometimes it does.....i have had this happen a lot ....just something we must deal with ....... so if you want a solid set up .....find what works set procODT and leave things be and it will stay as you set it ....
as long as the system accepts whatever you set!

I won't attempt to parse this, although I think I understand it. Instead I believe we need a clarification from Asus on what conditions cause procODT reset and which don't in 1107, updated as needed by any changes that are embedded in newer BIOS releases.
     
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post #12937 of 17696
TBH I think that 3200Mhz is good enough. And IMO getting more than 3200Mhz is just for self enyojing purposes for those who touch themselves at home smile.gifsmile.gifsmile.gifsmile.gif
post #12938 of 17696
Quote:
Originally Posted by Frikencio View Post

TBH I think that 3200Mhz is good enough. And IMO getting more than 3200Mhz is just for self enyojing purposes for those who touch themselves at home smile.gifsmile.gifsmile.gifsmile.gif


Well its better than doing it in public!

Touching 3600 in public is a big no no.

post #12939 of 17696
I just can't get ZenStates to work with my board for some reason, am I missing something obvious when using that program?

I went to bios, set P0,P1,P2 to custom, didn't change anything, set my vcore to auto and boot into Windows, installed and I'm getting stuck on P2 with the automatic voltage that the system believes my CPU needs to work (1.42v for 3.8GHz). Clicked apply, restarted, changed the settings, nothing works redface.gif
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post #12940 of 17696
So I'm tinkering (AGAIN) and may be onto something, and so is @RaptormanUSMC.

I just tried booting with soc 1.15 and changing prodoct to 80Ω, its INSTANT f9 error and boot loop. Tried it again with soc at 1.10 and 1.05 and same exact thing, instant f9. In my case 80Ω is a bust (havent tried other ones). I am now at 1.0v on soc and guess what, leaving prodoct on auto it booted up just fine at 3200mhz thumb.gif.

Now the issue, i just tried cold booting (i only left it off like 2mins I'm not sure if that makes ANY difference) and it booted up right away with soc at 1.0v and 3200mhz memory. Case temp shows 22-23°C. Raptorman maybe right but I'm not sure why it would work on 2933 but not on 3200 with the exact same settings and soc (i did change boot voltage to 1.45 but last time it made no difference). It's been unseasonably cold here in Southern France (i wake up and pc case temp shows up as 18-19°C). And then i get an f9 at 3200mhz, it has NEVER happened at 2933 but i will see if with these settings it sticks.

It would be VERY weird that soc/dram/bootram/timings are identical but 2933 boots under 20°C and 3200 doesn't. Bit odd there.
    
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