I've been using this Hero motherboard for an extended period, experimenting with both two and four DDR memory slots populated. Initially, I faced challenges achieving stable operation with four DIMMs, even at reduced speeds like 4800 MHz or 5200 MHz. Recognizing the potential for improvement, I recently updated the motherboard's BIOS to version 3001. This prompted me to revisit the four-DIMM configuration, as I had the necessary memory modules. The RAM used consists of two identical G.SKILL Trident Z5 RGB Series (Intel XMP 3.0) DDR5 kits, each 32GB (2x16GB) with 6400MT/s, CL32-39-39-102 timings, and 1.40V.
Processor: Intel i9 13900K undervolted to 1.27v
Cooling: Custom 3-rad watercooled
My system is currently ranked #1 for Intel 13900K systems on OCCT benchmark (all 4 categories, single and multi-processor), though this ranking is with 2 DIMMs. Stability and more benchmarks with 4 DIMMs will be run this week.
I've been running the system with all four DIMMs for about three days, and it has shown no issues. The memory modules are using the XMP II profile, targeting 6400 MHz. While this is early testing, I plan more extensive tests in the coming weeks to ensure long-term stability.
I've seen opinions that are generally negative towards using four DIMMs in similar configurations. Therefore, I'm seeking community input: Has anyone else successfully run four DDR5 6400 memory modules stably?
