[SOLVED] Using ryzen 5000 series on an old b450 mobo

[Hang Up]

Hi, I have the asrock b450m-hdv motherboard, and while it does officially support 5000 series cpus, im concerned if the 4pins will be enough to power the 5600x that I recently bought. Is it safe/possible plug it in and if so would I be leaving performance on the table? I mean, I've been using the 2600 on it up until now without any issues and they both seem to have the same TDP, but I just want to make sure.

 

[Lutfij]

Happy New Year!

The board you own is to be considered a bottom of the barrel sort of board, meaning a lot of things were stripped down to allow it to be affordable and be able to go into an office style system. If I were you, I'd look into a B550 chipset board as opposed to recycling the older motherboard. While you're at it, drop in a dual channel DDR4-3600MHz tight timings ram kit to get an uplift in overall system performance, assuming this build is for gaming+productivity.

You sure you don't own this variant of the board listed above;
https://www.asrock.com/mb/AMD/B450M-HDV R4.0/index.asp
?

 

[Hang Up]

Happy New Year!

The board you own is to be considered a bottom of the barrel sort of board, meaning a lot of things were stripped down to allow it to be affordable and be able to go into an office style system. If I were you, I'd look into a B5500 chipset board as opposed to recycling the older motherboard. While you're at it, drop in a dual channel DDR4-3600MHz tight timings ram kit to get an uplift in overall system performance, assuming this build is for gaming+productivity.

I'm fine with it having less functionality, nor am I really looking for any faster ram, I'm mainly concerned about power delivery here. I just want to get this computer finished before the end of the christmas break.

 

[Karadjgne]

It's a 65w class cpu. A 4pin EPS can provide 168-198w depending on the connector. The limiting factor being the mobo connection. So it'll supply at least double the power the cpu needs, and thats not counting the 12v coming from the 24pin mains.

 

[Hang Up]

A 4pin EPS can provide 168-198w depending on the connector.

Hmm, interesting. Now I'm curious as to why so many of these motherboards have 8pin connectors when the most a CPU on the platform will pull by default will be 105W, overclocking, sure, but some even have an extra 4pin connector. Is that just for marketing and I'm looking too deep into it, because there is no way even the most extreme of overclockers could get a ryzen cpu to pull more than a 4090.

 

[Karadjgne]

Now I'm curious as to why so many of these motherboards have 8pin connectors when the most a CPU on the platform will pull by default will be 105W,

It's not 105w. It's upto 142w on the flagship cpus, and thats before PBO is enabled or OC. And you want extra in reserve as well as not pushing thermal limits of particular pins. It's better to split that 140w over 4 pins with 4 grounds in an 8pin EPS, than demand that 140w constantly from a 168w limited 2pins and 2 grounds.

The technical rating of the connector is 168w, but with manufacturing processes and possibilities, that's not always a guarantee, could be 150w instead if built on a Friday at 4:59pm or 8:01 on a Monday.

 

[Hang Up]

It's not 105w. It's upto 142w on the flagship cpus, and thats before PBO is enabled or OC. And you want extra in reserve as well as not pushing thermal limits of particular pins. It's better to split that 140w over 4 pins with 4 grounds in an 8pin EPS, than demand that 140w constantly from a 168w limited 2pins and 2 grounds.

The technical rating of the connector is 168w, but with manufacturing processes and possibilities, that's not always a guarantee, could be 150w instead if built on a Friday at 4:59pm or 8:01 on a Monday.

fair enough