So yeah, here in my country both of these are same price for some reason, so i wanted to ask you guys why is b550m this cheap and b450 is same price ?
Here are the exact models:
GIGABYTE B550M AORUS ELITE (rev. 1.0)
MSI B450 TOMAHAWK MAX
Both are going for $110 USD and that's pretty cheap for Serbian standards.
Are you content with the fact the B450 has no chance of PCIe gen 4 capability? It's really not material to performance at this time, but it is a differentiator. I would assume you've assesed either has the feature sets (slots, USB ports, SATA ports, M.2 ports and etc. including aesthetics) that satisfy. So the question would come down to VRM quality.
The Aorus Elite has 5 lo-side FET's in 5 phases, the Tomahawk has 8 lo-side FET's in 4 phases. the Aorus may control power better, but the Tomahawk's FETS should stay cooler heavily loaded with a high core-count CPU. Steve at HWUnboxed did some VRM thermal tests of each of these, in similar conditions.
It might be an interesting watch.
I'd say the reason the Aorus Elite is so cheap is because GB is using discrete FET's for the VRM, same as the B450 Tomahawk. Many, if not most, of the other B550 boards have gone to much more efficient power stages and many have also increased phase counts...all the way up to 12 phases.