Question Will Ryzen 5/7 run on B450i board? Worried about VRM

[goz3ic]

Hi everyone,

I have Gigabyte B450 I AORUS PRO WIFI with AMD Ryzen 3 2200G CPU which I’m planning to upgrade. I’ve been considering AMD Ryzen 7 PRO 5750GE or Ryzen 5 PRO 5650GE.
They both come with integrated GPU’s and both run at 35W TDP. I assume either one should be a decent step up in performance compared to the cpu I have now.

I checked support list at Gigabyte’s website and they’re compatible with my board, although one guy told me that my B450 i board has bad SOC VRM for a CPU I’m considering.
I had a really hard time Googling and it’s still unclear to me.

Do you think I’ll be ok with AMD Ryzen 7 or 5 on my B450 i board?

Should I consider something like Ryzen 3 4300GE or something even less powerful?

Specs:

B450I Aorus Pro WiFi
https://www.gigabyte.com/Motherboard/B450-I-AORUS-PRO-WIFI-rev-10/sp#sp

AM4 Vcore VRM Ratings
75A IR35201 (4+2) 4 phases
1x IR3556 50A Power Stage

taken from
https://linustechtips.com/topic/1137619-motherboard-vrm-tier-list-v2-currently-amd-only/
https://docs.google.com/spreadsheet...TJFqqVxdCR9daIVNyMatydkpFA/edit#gid=611478281
https://www.hardwareluxx.de/community/threads/pga-am4-mainboard-vrm-liste.1155146/

AMD
5750ge
https://www.amd.com/en/product/11226
5650ge
https://www.amd.com/en/product/11236
4300ge
https://www.amd.com/en/product/10221

Noctua Cooler
NH-L9a-AM4
https://noctua.at/en/nh-l9a-am4/specification

Any help would be appreciated.

 

[KananX]

This is a easy yes, both these CPUs you’re considering are 35W parts and pretty efficient. The mainboard, I would say, can take up to 65W tdp CPUs, over that it gets into not recommendable territory.

 

[drea.drechsler]

75A IR35201 (4+2) 4 phases

Not really sure where you got that...the link I have says it uses the IR3556M 50A high-efficiency power stages in 4+2 configuration. The IR35201 is the VRM controller.

https://www.hardwareluxx.de/community/threads/pga-am4-mainboard-vrm-liste.1155146/#post25344552

Be sure to scroll down to the B450i Aorus Pro WiFi. The table includes a link to high-resolution photos:

https://www.coolpc.com.tw/phpBB2/viewtopic.php?f=70&t=251368&sid=068d3e03bd79b7350addc85adc6376ca

Still, 4 x 50A VCore power stages will be be quite sufficient for those CPU's. Typical of mITX boards it's using high quality components throughout for space and efficiency...notice the tantalum caps. It's built more like a GPU VRM. I'd have complete confidence putting a 5950X on the board as long as I'm not trying to overclock it.

Both the VCore and 2 x 50A VSOC power stages are covered by a very capable looking heatsink, just give it some air flow and you should have no problem.

mITX boards are typically installed in highly compact builds. If that's your goal a high-power CPU would most likely be thermally constrained anyway and therefore not likely to stress the VCore VRM much, if at all. The low-profile Noctua is going to be quiet but probably not capable of cooling a powerful CPU meaning it will almost certainly be thermally constrained. It should be good enough for the APU's you'll be running though. Being a down-blowing cooler it should also keep up good airflow across the VRM heatsink.

 

[Math Geek]

i have multiple b450 Aorus pro wifi atx boards and am running a 5900x at the moment. before that it was a 3600x. both are 105w parts and neither have had any issues. the others are running similar chips with no problems.

your board is just about the same as mine but smaller. a 35w cpu would be no problem at all for it. no worries there.

what you've seen is normal for the web. a review site took the board, strapped the top of the line chip in it, took off all the protections and then tried to kill the cpu. shockingly the mobo did not like it. rather than understand how it was tested people read the last sentence and then spout off that the board is no good because it could not handle that crazy scenario. when in reality, normal use it is more than capable of running any chip you can put on it.

 

[goz3ic]

KananX, drea.drechsler, Math Geek
Thanks a lot for your help!