Nitro settings 1-2-0, Burst x8 x8, Robust Memory Training, (MCR, Power Down Enable and TSME) disabled. IOMMU and SVM disabled, iGPU disabled, BankSwapAp, I'm running VDDIO at 1.1v and don't see errors in TM5 Ryzen3D anta777 test for 1 hour and half, passed ycruncher test with timelimit at 24 minutes
I realised that when setting default EXPO it gets set to 1.4v, wich I found really high, is it safe? Does lowering it to 1.1v like in my case could be hindering performance and I should run a specific test to identify issues?
4 Comments
It can be set lower, your CPU supports JEDEC DDR5-5600 at 1.1v (VDD, VDDQ, VDDIO).
We need to raise VDDIO significantly to shoot for configs like DDR5-8000, but otherwise not so much.
Safety is fairly well proven at 1.4v due to EXPO setting it there for most kits, so i am not very concerned about that but lower is probably better.
Run the usual tests (Karhu, OCCT RAM and CPU+RAM, ycruncher mix etc)
VDDIO and VDDQ are comuncation voltage between CPU-Memory, both normally should be set as the same value, leave it at EXPO settings.
VDD is the voltage that powers the memory it self, it has no relation with other 2, and this voltage can be usade do scale tCL.
By the way, it is stable 6000 with VSOC 1.07? Go for 6400 or 8000mhz.
with 1.1V IO you should try to keep vsoc less than 1.2V and VDDP below 1.0V, otherwise portal to hell will open and a demon will come and eat your PC.
there is a suggestion to keep VDDIO=VDD=VDDQ, but breaking this doesn’t seem to summon demons.
Put that tcl to 26