Hey everyone, I'm having some trouble getting my Corsair Vengeance DDR5 32GB RAM at 6400MT/s to work with my setup. I've got a Ryzen 9 7950X3D and an ROG x870i motherboard, but it doesn't turn on with any Corsair RAM I've tried—I've tested both single and dual stick configurations at 6400MT/s and even 6000MHz. However, when I switched to Crucial's dual 32GB 6000MT/s RAM, everything booted up fine. Also, can someone explain the difference between MT/s and MHz?
3 Answers
Not all CPUs and motherboards can handle 6400MT/s RAM. It's possible that updating your BIOS could help with compatibility issues. Since the Crucial RAM works fine for you, it might be best to stick with it for now because the performance difference in regular use might not even be noticeable.
Totally understandable! BIOS updates can help, but sometimes certain hardware just plays better together.
For DDR RAM, 1 MHz is equal to 2 MT/s. So when you see RAM advertised as 6000MHz, it's actually referring to 6000MT/s.
MT/s (MegaTransfers per second) measures effective memory speed where MHz measures actual frequency. Since DDR stands for Dual Data Rate, the effective speed is double the actual speed. For instance, 6000MT/s RAM runs at 3000MHz. Manufacturers often use these terms interchangeably, but it can lead to confusion. Also, the compatibility of RAM may vary based on your CPU, memory, and motherboard, so sometimes it's just a matter of luck!

Yeah, I'm planning to stick with the Crucial RAM now. It's frustrating though because they both advertise similar speeds, but Corsair just wouldn't boot up at all! That kind of thing drives me nuts.