DDR5 memory options, XMP profiles, and standard base frequencies.adm-
DDR5 memory options, XMP profiles, and standard base frequencies.adm-
Many users, including myself, believe DDR5 boards should only include two DIMM slots since the third one isn’t really needed for most people. This seems unusual given the screenshots show speeds around 4800 MHz. While it hasn’t reached XMP, it exceeds the 4400 MHz shown in the BIOS. If you don’t need 128GB of RAM, pick one of the two kits and simplify your setup (two 32GB units are still manageable at 6400 MHz, though not as straightforward as 4x32GB). First, verify that all ICs match across the modules. Each stick will display a code like “820M” or “821A.” The last three digits identify the memory type, the third-to-last digit reveals the manufacturer (likely SK Hynix with “2”), and the final letter indicates the die revision. If they differ, choose the one labeled “A” and discard the other—mixing them can cause problems, especially since A dies are easiest to clock accurately. If all match, select one kit but be prepared for possible speed issues. Next, aim for maximum memory performance by enabling XMP, setting the controller mode to 2, and configuring the speed to 4800 MHz (hope it runs there). In Windows, use CPU-Z to confirm the frequency reported matches what BIOS shows (it’s half the actual data rate). Perform a stress test with Y-Cruncher VST for 5–10 minutes. If stable, adjust System Agent, CPU VDDQ, and VDD2 voltages in BIOS to prevent crashes. If issues persist, gradually increase frequencies until you reach the highest stable setting (up to 6400 MHz). Once stable, run a longer stress test (TM5 with 1usmus_v3 for 60 loops) and keep boosting frequencies until you hit the last working frequency. After that, test stability again and continue tweaking voltages until performance improves.
I changed the speed to 4800mhs after noticing it was incorrect. I visited the MSI website and saw they had v1.6 BIOS, while I was using v1.5. After updating the BIOS, I tried Memory Try It!, selected 6400 CL32, restarted, and entered the new BIOS with two drives. Now it's running at 6400MHZ in the BIOS. I’m fine with 64GB RAM. Regarding the other two units, their packaging is no longer available. I might sell them to someone here for a good price or keep them as a backup.
It's great you're thinking ahead. You might be able to push performance even further, with some high-end setups using 2x32GB at 6800+ speeds. Running stress tests is a good idea to confirm stability. Having a backup plan is sensible, though actual RAM failures are rare, so it probably isn't necessary right now. If I hadn't invested in the newer 2x24GB kits, I might have chosen your 2x32GB option based on price.
It would be wise to experiment, but you'd likely need to reduce the speed to around 5200 or 5600 to make it function without manually adjusting the VDDQ and VDD2 values. MSI's Memory Try It is impressive—it lets you boost memory performance effortlessly. Enabling it on certain configurations often leads to more consistent results.
It seems the setup worked well over XMP. It looks like there are two methods to achieve optimal memory performance—XMP or another approach. I’ll try adding the other two options and observe the results. Otherwise, sticking with 64GB should be sufficient, unless I really need more space.