Compare MSI B450 TOMAHAWK MAX and B450M Mortar Max models.
Compare MSI B450 TOMAHAWK MAX and B450M Mortar Max models.
There was a B450 explosion concerning its compatibility with Zen3 today. The idea of “going with” is uncertain. I remember that the tomahawk and the mortar are essentially different trim versions of the same product, so one would probably need to check the specifications and compare features before deciding. It seems the mortar and tomahawk weren’t always available together at the same place, suggesting they might be quite similar.
You're using a setup with both a USB 3.1 front panel and two SATA SSDs. Your main concern is whether adding 3600MHz RAM (CL16-16-16) will work smoothly without affecting stability. It's good to know the stock RAM speed is 3600MHz, so you're aiming for that level.
For your setup with a 1 NVMe M.2 drive, 1 HDD, and AIO cooling, the Mortax Max and Tomahawk Max are both solid choices. They offer good compatibility and performance.