I'm having trouble getting my Corsair Vengeance RGB DDR5 RAM, specifically the 32GB kit (model CMH32GX5M2B6400C36), to run at its advertised speed of 6400 MHz. I'm using it with an Intel Core i5-13600K on an ASUS TUF Gaming Z790-Plus WiFi motherboard, and I've updated the BIOS to version 2202. I've enabled XMP in the BIOS, and while it shows 6400 MHz there, the system either black screens or reboots when I try to boot with that speed. It defaults to 4000 MHz instead, even when XMP is applied. Task Manager always shows it running at 4000 MT/s, and HWiNFO64 occasionally reflects the correct values but inconsistently. I'm curious if this is an issue with the memory controller of the CPU or if this Corsair kit has known compatibility issues with ASUS boards. Has anyone successfully run this RAM at 6400 MHz with the same setup? I'm really at a loss here and would appreciate any help!
2 Answers
Another thing to consider is whether your power supply is delivering enough power for the RAM to run at those speeds. An 850W PSU should be more than sufficient, but you never know—make sure all the connections are solid. A lot of users also recommend running a memory test tool once you get the RAM at 6400 MHz to check for errors. If you’re still facing issues, you might also want to explore some BIOS updates or consider reaching out to Corsair’s support for guidance on RAM compatibility.
It sounds like you're doing everything right, but you might want to check a few things. First, ensure you're using the correct DIMM slots for the dual-channel setup. Usually, it's recommended to place them in slots 2 and 4 on ASUS boards. Also, double-check if the BIOS settings for memory training are enabled and if there's an option for disabling 'Memory overclocking' that could be causing issues. Some users have reported stability problems with certain XMP profiles on ASUS motherboards, so you might want to try manually adjusting the speed and timings instead of relying solely on XMP.
Good call on the DIMM slots; I had similar issues with mine before. Also, you've set your DRAM voltage to 1.35V, which is correct, but getting the timing values slightly adjusted in BIOS can sometimes help achieve stability.
Yeah, sometimes it's just about trial and error with these high speeds. A bit of patience and tweaking can go a long way.