asus prime b450m-k - Recent CPU support

petertr2000 · 8 Jan 2022 at 14:08

Sorry for the noddy question, but I'm massively out of the loop and looking to pick up a used gaming rig that I'll update along the way.

Seems this is one that has had support to includer newer AMD CPUs, but does anyone know if it will support the last of the AM4 chips announced the other day? If not, how far back would I have to go?

System currently has a 2700x in it. Which is already a big upgrade for me.

Thanks

mickyflinn · 8 Jan 2022 at 14:28

5800x 3d cache

AMD said it will be drop-in compatible with most existing AM4 platforms.

https://www.servethehome.com/amd-ryzen-7-5800x3d-with-3d-v-cache-coming-in-the-spring-am5-2h-2022/

petertr2000 · 8 Jan 2022 at 14:47

mickyflinn said:
5800x 3d cache

AMD said it will be drop-in compatible with most existing AM4 platforms.

https://www.servethehome.com/amd-ryzen-7-5800x3d-with-3d-v-cache-coming-in-the-spring-am5-2h-2022/

I know there's a bios limit for compatibility with older AM4 boards, do you think this one will have that issue?

Otherwise the current chips will be a great upgrade in ~2 years time

EsaT · 8 Jan 2022 at 14:56

CPU VRM of that board is sized for playing MS Office.
Without even heatsinks it's decent only for sub 50W TDP CPU.

petertr2000 · 8 Jan 2022 at 15:04

EsaT said:
CPU VRM of that board is sized for playing MS Office.
Without even heatsinks it's decent only for sub 50W TDP CPU.

Its got a 105tdp CPU in it at the moment? You think the VRMs will already be unstable for that?

I'm not looking to OC or anything like that. But if the MB is junk, then I'll pass on it.
Thanks

Could I literally just stick some heatsinks on the VRM chips?

EsaT · 8 Jan 2022 at 15:27

2700X certainly won't keep highest clocks under multithreaded loads on that board.
And higher VRM temperature also eats endurance of filtering capacitors.

Original B450-F Strix had similar four cripple stages VRM, but with heatsinks on it. (then sabotaged by plastic marketing excrements)
And in The Stilt's testing stock 2700X doing x264 encoding overheated that VRM to throttling limit in dozen minutes.

petertr2000 · 8 Jan 2022 at 18:40

EsaT said:
2700X certainly won't keep highest clocks under multithreaded loads on that board.
And higher VRM temperature also eats endurance of filtering capacitors.

Original B450-F Strix had similar four cripple stages VRM, but with heatsinks on it. (then sabotaged by plastic marketing excrements)
And in The Stilt's testing stock 2700X doing x264 encoding overheated that VRM to throttling limit in dozen minutes.

Thanks very much - that's exactly the type of thing I needed to know.

I'll avoid. Looking at another one alread :-)

EsaT · 8 Jan 2022 at 18:53

Even lowly Asrock B450 Pro4 would have cooler running VRM than any Asus B450 board, except later released second version of B450-F.
And MSI has the most consistent VRMs in B450 and also the best heatsinks.
(no plastic excrements blocking airflow)