Hey folks! I'm having a bit of a problem with my PC. After every reboot, it seems to go through a memory training process, which is pretty frustrating. I'm hoping to get some insights or solutions to fix this. Here's a quick rundown of my setup and the specific issue I'm facing:
**System Specs:**
- **Motherboard:** ASUS ROG Strix X870E-E Gaming WiFi
- **CPU:** AMD Ryzen 9950x3d series
- **RAM:** 4x32GB Kingston DDR5 6000Mhz FURY Beast Black (two kits of 2x32GB)
- **GPU:** NVIDIA RTX 4090
- **PSU:** 1000W
- **BIOS:** Version 1203 (latest as of April 2025)
- **OS:** Not installed yet (clean drives)
**Issue Description:** Initially, I encountered error codes 15, C5, and a constantly lit DRAM LED on the motherboard when trying to use all four RAM sticks. After some troubleshooting, I got it to boot into BIOS with two sticks (from one kit) in slots A2 and B2. I then added the other two sticks from a different kit in slots A1 and B1, and it recognized all 128GB successfully. I enabled the EXPO profile in BIOS to set the RAM to 6000Mhz with CL30 timings, saved everything, but now it performs memory training every time I reboot. Any help would be appreciated!
2 Answers
I can relate! I've booted my ASUS ROG Strix X870E-E Gaming WiFi with two Kingston DDR5 32GB modules and everything runs smoothly. However, when I add all four sticks, I run into trouble, especially with EXPO enabled. I'm looking into upgrading to Kingston KF564C32RSK2-96 (2x48GB, 6400Mhz) soon. Do you think that RAM will work well with my build? Any thoughts?
It seems like AM5 platforms can struggle with more than two RAM sticks, especially dual rank modules. One option is to sell your 4x32GB and switch to a 2x64GB setup, if you can find something like Micron modules. There's also rumors about Hynix possibly releasing 2x96GB kits soon, so that might be worth waiting for.
Exactly! A lot of users try to max out their RAM, but DDR5 does not handle that well compared to DDR4 due to bus changes. It's impressive that your board even POSTed with 4x32GB at 6000MHz.