9800X3D + 2x32GB 6000CL30, stuck at 5600!
Spent all day chasing TM5 errors and want a sanity check.
Setup: 9800X3D, ROG Strix B650E-I (BIOS 3886), Corsair Vengeance 2x32GB 6000CL30 (CMK64GX5M2B6000C30), Hynix. TM5 extreme @ anta777 for all testing.
What I found:
- 6000 EXPO: instant errors, 5-40 seconds, every single time. Tried VSOC 1.25 (verified in ZenTimings, not just set in BIOS), FCLK 2000, VDDG bump, even a desk fan on the sticks with the side panel off. DIMMs went from 74C to mid 50s and it still dies in about 10 seconds
- 5800: fails at 26 min with VSOC 1.20, fails at 78 min with 1.25. The voltage tripled time-to-fail but didn't fix it
- 5600: full TM5 cycle clean, DIMMs around 60C
Each stick passes solo at 6000 (short runs only), so the sticks seem fine and this looks like a classic 4-rank IMC ceiling. Both sticks did apparently run 6000 fine about 2 years ago though, which bugs me. Could be a BIOS/AGESA change since then, or maybe it was never actually stable and I just didn't test properly back then.
Questions: anyone with 2x32 on a 9800X3D actually holding 6000 long term, and if so what voltages? Is there any point trying VDDP/VDDQ tuning or buildzoid style timings before I accept 5600 and move on? Has anyone seen an AGESA update knock a previously stable 64GB config down like this?
Not fussed about the 1% perf difference, more just want to know if I left anything on the table
