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The main difference is the featureset of the chipsets[www.gamersnexus.net].
The main problem is the quality of the VRMs and the amount of power delivery(phases) to the CPU.
105W TDP is out of reach. You need to default to ECO Mode (65W TDP, 87W PPT). Leaving processing power on the table.
https://www.igorslab.de/en/how-much-watts-can-an-a320-motherboard-really-handle-in-practice-and-which-cpu-should-be-used-maximally-practical-test-and-vrm-analysis/2/
and max. achievable RAM frequency differ.
Check on B450/B550 motherboards.
A320M motherboards are cheapest garbage with no VRM shielding and no proper power delivery. Slapping high end CPU like 5900X into this is just asking for trouble.
It might actually, it will never run on its full potential with this motherboard for sure.
I would not put anything above 65W into this motherboard.
Absolutely great answer, to such a weird question.
Ryzen 5900x is a top tier high-performance CPU which needs lots of power to run. If the VRM can't deliver the required power to the CPU, you will lose boost clock.
if it has no vrm heatsinks (around the cpu socket), then it will throttle as soon as the cpu has any load
b and x boards often have better vrm config with larger heatsinks that can handle power hungry cpus without vrm throttling
and the pci-e lanes
4.0 lanes are better for 4.0 devices, as it takes fewer lanes for more bandwidth than 3.0
will but if no devices are 4.0 then it will make no difference vs a 3.0 board
5900X/5950X should only be paired with an X570 or B550 board.
Somebody explain why theres no difference in performance and temps seem OKay ???? please check link below.
As I said in the first reply, there will be no difference in frame rates or load times. People typically buy higher end boards for the feature set. If you don't want or need those features a cheap board will function just as well.
An A320 Motherboard is going to have a highly outdated set of features and have very poor VRMs
A single core out of a 16-core processor boosting to 5 GHz looks good and all. However, the more affordable 300 series motherboards have modest power delivery subsystems that may not extract the full performance of a high-end chip, such as the Ryzen 9 5950X. For example, multi-core performance could vary by 20% to 30% on a budget A320 motherboard compared to a higher-end motherboard.
This configuration is possible only because Asus gives its A320 motherboards full Ryzen 5000 series support with a new BIOS and the latest AGESA code, version 1.2.0.3C. We reported on this two months ago, noting that Gigabyte and Asus, in particular, have begun delivering new BIOS updates to A320 boards to support AMD's latest Ryzen 5000 series processors.