I have 48GB x 2 – F5-6400J3239F48G kits which I have paired with 9950x3d. This is my first time tweaking ram timings and underclocking CPU. I have taken guidance from Bullzoid's video and the discussion here on this sub-reddit. Image attached is what I have been able to achieve and the stability look good unless I have missed something.
- Tested 2300% Kharu
- TM5 – DDR5 Ryzen 3D Profile@anta777 which I believe completed with 9 cycles
- OCCT CPU with Corecycler 1 hour each with SSE and AVX2
- y-cruncher for 2 hours
I did try for 6200 CL30 but I was getting BSODs during testing. I don't want to raise voltages further due to high ambient.
On my 9950X3D, I have:
- CO – CCD0: -16, CCD1: -11
- CS: -20, -15, -10
- CPU Voltage offset: -100 mv
- PPT: 230W
- TDC: 190A
- EDC: 200A
I'm very new to this. Please guide me if there is a scope to improve or fix issues.
PS: I have a fan on memory as I'm running 1.45 VDD and my ambient is usually 32C
1 Comment
I would *highly* recommend doing memory overclock stability tests with PBO/CPB off. I had a CPU overclock, 12 hour+ on VT3 and OCCT be actually unstable, making me waste time.
You likely do not need vSoC 1.24V for 6000MT/s with GDM on. I would also recommend trying to turn off GDM at your current vSoC.
What are you Nitro settings? You PHY timings seem quite tight.