I know that this is a primarily German thread, so sorry for the English.
That said, I wanted to thank pretty much everyone here for making this extremely valuable thread!
I've had the Corsair Vengence LPX 3200CL16 for a while (c-die to no surprise) and it was a struggle to get anywhere with it (especially as Thaiphoon Burner seems to just 'guess' that it was B-die).
At first, I simply stuck to tightening the timings, got it down to 3200CL14 - and stable. However that needed 1.4V and at that time, information about C-die and high voltages being dangerous was not that common, but thankfully it's not caused any damage. I ran it at CL14/1.4v for about a month before heading the issues with voltages.
At this point, I really do wonder how long the RAM would have lasted at that voltage since 3200CL14 is not bad.
However, thanks to reddit and Operation-Void I eventually found this place, and then the OC fun began.
One thing I learned pretty much instantly is that c-die temperature is insanely sensitive to temperatures. Case in point, I got to 3666CL18 stable in the morning, I had a fan pointing at me and my case, so that aided in airflow. At some point in the mid-afternoon, I turned it off and within 15 min, I BSOD'd.
I tried that out several times and it was totally reproducible. As my RAM does not have a temperature sensor, I can't know for sure how much the temps changed, however, it cannot have been more than 2-3C.
To solve that, I went a bit overboard. I have a spare AMD Wraith Prism fan, so put that on the bottom of the case blowing air up, then I brought a Noctua a12x15 and tied it up directly above the RAM blowing on it, and set both on a fixed RPM of 1500 (the Noctua fan is almost silent, but the AMD fan is a bit noisy, so I'll probably replace it at some point).
I'm using the Sliger SV590 as my case, so clearance between the case and the ram is really small. The 15mm slim fans are pretty much the only thing that would fit.
With the extra airflow in, played around with 3666CL18 as that was my previous 'stable' point, but then went to try 3733CL18 and got it to pass TM5 1usmus and 1h of AIDA. That's not the strictest of tests I know - so I am going to do more, but I did need to use my PC at that point so I thought I'd do a (perhaps somewhat foolish) test of just using my PC and seeing what happens. Though, nothing bad happened while light use (web browsing), watching movies, gaming, and video editing - so it seems to be stable, and there are no errors logged in Windows Event Viewer either.
I am still going to run TM5 for a bit longer later on, and I do need to fire up Karhu at some point just to validate this further - but I'll do that a bit later as I've still got work to do with my timings and some optimizations.
So looking at what I've got right now:
These are my current timings (that is stable for me).
For the voltage levels:
Quick version:
RAM: 1.34v
VDDG: 900mv
VDDP: 950mv
SOC: 1.1 (LLC3)
ProcODT : 48 (though I am curious if I can lower this as I read here that above 40 is pointless).
RTT: Nom disabled, WR off, Park RZQ/5
CAD: 24-30-24-24
Current targets with this version is to:
Get GDM disabled
Get tRFC lower as 594 is just blerg in my eyes.
After that generally tuning the secondary and tertiary timings. (I think I might even be able to get tRCDWR down to 18)
That said, I am very happy to have tFAW at 16!
Here's AIDA's benchmark comparison between my stock XMP (3200CL16, 3666CL18, and 3733CL18)
I do know that the 3666CL18 primary timings look weird (technically they're 'worse' than the 3733 timings, But I seriously could not stabilize it beyond that point, I ended up just putting it down to #cdie reasons. I only tried 3733 out of 'I'm doing this, so why not' (and at that point, I found no way to rationalize the behavior of C-die beyond heat).
Ultimately, I do want to 'try' and hit 3800, however, I have a feeling that my Infinity Fabric will not hit 1900.
The reason is - I've tried to get to 1900 when on 3200, and I've tried some really loose 3800 timings, but the system would not boot at all.
So, if anyone here knows how to stabilize the IF at that level, please can you let me know!
And that's all from me! I hope that this post eventually helps some down the line, I essentially made this because I used all the info here to get to this point, so it seems only right to input my own data for the future dude or dudette that wants to have fun OC'ing the madness that is Sammy c-die!