alxns
Neuling
- Mitglied seit
- 01.06.2020
- Beiträge
- 23
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@emissary42 Kleines Update... Das war leider nicht 100% stabil. Ich hab gesehen, dass ein WHEA warning während dem TM5 Test gemeldet wurde. Es sieht nicht so tragisch aus aber die sind wie "hidden BSODs".Sieht gut aus! Hab es im Startbeitrag ergänzt.
VSoC idle: SVI2 TFN:1.10625V
DMM:VRout 1.125V socket 1.105V
VSoC load: SVI2 TFN:1.10625V
DMM:VRout 1.130V socket 1.100V
So lately I've done some testing and reading on that and it's heavily temperature dependant. There's no magical formula, unfortunately. tRFC is related to charge refreshing which is one of the most power hungry DDR4 operation. C-die gets hot at lower voltages than other typical ICs, and when overclocking, it also can get unstable around 40 degrees C.- tRFC ranges from 310-330ns on most kits, or 10.23-10.89 per 66MHz.
Probably because it gets way too hot for any normal operation haha. Plus, I don't think your kit has any heatsinks if I'm not mistaken? I used to try 3600CL16 which needed 1.41V but never could get it 100% stable. Now I know why 😅 Very little stable voltage window.- tCL can't really get below 9ns as by the time you get close it starts to negative scale.
- My kit negatively scales at around 1.43V. I'd consider it unsafe though, and say that ~1.35V is the sweet spot.
The lowest setting is 5 as per JEDEC and if you have Geardown ON, tRTP has to be even, so that's why. Also, tWR and tRTP are supposedly set with the same adressing bits in the DDR4 mode registers, with tRTP always being half of tWR. What I suspect is, if any of the two settings don't match the JEDEC mode register and Geardown spec, it will autocorrect. I also suspect Ryzen Master and ZenTimings only show what is set in the BIOS, so it's hard to say what the reality is without some proper testing. But those are minimum timings anyway, not absolute.- tRTP bottoms out at 6 on most kits.
I've tried Geardown OFF 2T for the odd CAS numbers but to be honest it just caused more issues at higher frequencies 🥴With that out of the way here are my final OC results (updated since last message) which are tight as can be:I almost got CL17 (also tried 2T to no avail) but it would've required around 1.4-1.42V which is a bit too much for C-die. I've also done 3333 16-19-19-19-35 and 3200 15-18-17-17-34 without issue.
That greatly helps! My 10-year old case is a problem, no exhaust possible directly above it, just off by 15mm I need to add a 140mm fan there...You are correct in saying my kit has no heatsinks but there is an exhaust directly above it
Oh no...Oh don't worry, the next bios update might make you start over again... if you ever dare to make the switch
Could've used much lower tRC and slightly lower tRAS on the 3733. Other than that this is a good comparison.Thanks for the pictures !
If you are interested in the performance difference between floor and OC:
Test system: R 5 3600X, 16gb Ram, MSI B450 Pro MAX, KF2 Geforce 2060 super @ stock (driver 442.74)
Far Cry 5 benchmark max details , no HD textures, full HD resolution
Stock (3200mhz 16 18 18 34 75 : 6450-6500 frames / Time Spy CPU : 7150 - 7200
3200mhz 15 17 17 32 54 : 6700-6750 frames / Time Spy CPU : 7300-7350
3733mhz 18 21 21 43 72 : 6700-6750 frames / Time Spay CPU : 7300-7400
I think GTA5 benefits a little more from MHz than from timings (2-4%), but I have no reliable results.
[USER = 306787] @Cpt_cool [/ USER]
Definitely easy to overlook. I'm surprised by my tWRWRSD and tWRWRDD which are quite low.
Edit: Gee wee every day my OC becomes unstable. Yesterday I have it at 1.33V stable, today I come and get lots of crashes and test with 3 errors in a minute. I bring voltage up to 1.34V and now it's stable again. WTF C-die?!