Adjusting RAM speed in the BIOS might lead to the computer shutting down right after powering on?
Adjusting RAM speed in the BIOS might lead to the computer shutting down right after powering on?
If BIOS is set to 3600MHz for RAM, the PC will restart after a short time. After changing it to 3200MHz, the motherboard light turns yellow for DRAM and the system won’t boot. When I hold the power button and restart after the yellow light appears, the PC boots normally. I believe adjusting some BIOS settings is necessary, possibly related to the DRAM stage. I think once the system gets stuck in the yellow DRAM state, the next boot changes the configuration to a working one. Thank you!
Welcome to the forums, newcomer!
ROG B550F Strix Motherboard
What BIOS version are you on for your motherboard?
AMD Ryzen 9 3900X 12-Core Processor (3.80 GHz)
How are you cooling the processor?
Please include the make and model of your case, your temps for your CPU and GPU for both idle and at load, as well as the make, model and age of the PSU.
RAM 32.0 GB T Force Vulcan TEAMGROUP-UD4-3600
Can you pass on a link to the ram kit you're working with?
I've looked up the spec for the 3900X on CPU World and it says your processor should work up to 3,200MT/s so I'd expect it to be stable at this speed.
Memory controller
Memory channels (total): 2
Supported memory: DDR4-3200
https://www.cpu-world.com/CPUs/Zen/AMD-Ryzen 9 3900X.html
I'm less surprised it doesn't like 3,600MT/s, because it's 400MT/s faster. However, you might get it to work reliably at 3,600MT/s if you relax the CL/CAS setting by one or two clock cycles (increase the value for CL manually in the BIOS).
But first of all, try switching off XMP/EXPO/DOCP in the BIOS (disable memory overclockin). The RAM speed should drop to the JEDEC default, probably 2133 or 2400MT/s. See if the yellow DRAM LED illuminates.
If the PC is happy at JEDEC default, manually set successively faster speeds, e.g. 2,600, 2,800, 2,933, 3,000, 3,200, 3,400, 3,600, etc.
To check if the system truly stable, boot the PC from a MemTest86 USB memory stick and run a complete set of tests (can take several hours) at each selected overclock frequency. If you get one or more errors, you have a memory problem.
https://www.memtest86.com/
Thank all for your assistance. In the BIOS I adjusted the RAM speed to AUTO and it appears to have resolved the issue. There have been no problems since then. I also updated to the newest BIOS version. I wonder if I am utilizing the full potential of my RAM when set to auto; perhaps I should explore the EXPO settings later. I’m not entirely confident I’m getting the best performance from my equipment, as I assembled it and began using it with minimal configuration.