I have been a Sys Admin for 7 years. It is a problem, vmotion won't work going from AMD to Intel or vice versa (at least not in any official way). In fact it is highly suggested when building ESXi stacks that you get the exact same model CPU for each server.

https://communities.vmware.com/thread/305792 https://www.v-front.de/2013/04/how-to-vmotion-from-intel-to-...

No, Intel FlexMigration and AMD-V Extended Migration architectures are different, and vMotion isn't supported across them.

EVC does not allow for migration with vMotion between Intel and AMD processors.[1]

This isn't really that surprising. x86-64 is standard, but extensions aren't. Eg, here's some of the new extrnsion in Zen vs Steamroller: Compared to the AMD Opteron™ "Steamroller" EVC mode, this EVC mode exposes additional CPU features including RDRAND, SMEP, AVX2, BMI2, MOVBE, ADX, RDSEED, SMAP, CLFLUSHOPT, XSAVES, XSAVEC, SHA, and CLZERO [1]

[1] https://kb.vmware.com/s/article/1003212