Question Should I buy a new PSU?

[martinezkier.dacoville]

My low end system is currently using my trusty Seasonic M12 620W Bronze Rated, I have bought it brand new in 2017 and still using it now, never had any problems and my whole system is plugged on a UPS then to a surge protector socket, power on where I live is unreliable plenty of low voltages and power surges and interruptions. My current PC does not consume much. Planning to replace it with either a :

1. Cooler Master MWE v2 Bronze 650W
2. MSI Mag A650BM Bronze 650W
3. Corsair CV Bronze 650W


Specs:
i3-9100F
Gigabyte Aorus Gaming B360M
2x8GB 2666Mhz Elite Group
Gigabyte G1 GTX 1070
500GB Kingston S2000 NVME
4x3.5" HDD (9TB Storage), too much yeah I know.
Seasonic M12 Bronze 620W (since 2017)

My PC is old but I kinda like using my PC parts until it broke or obsolete, I started with a Core2Duo E7400>i3-2500>G4560>i3-9100F, I am not much of a gamer. I only play 1080p 60hz.

 

[kanewolf]

My low end system is currently using my trusty Seasonic M12 620W Bronze Rated, I have bought it brand new in 2017 and still using it now, never had any problems and my whole system is plugged on a UPS then to a surge protector socket, power on where I live is unreliable plenty of low voltages and power surges and interruptions. My current PC does not consume much. Planning to replace it with either a :

1. Cooler Master MWE v2 Bronze 650W
2. MSI Mag A650BM Bronze 650W
3. Corsair CV Bronze 650W


Specs:
i3-9100F
Gigabyte Aorus Gaming B360M
2x8GB 2666Mhz Elite Group
Gigabyte G1 GTX 1070
500GB Kingston S2000 NVME
4x3.5" HDD (9TB Storage), too much yeah I know.
Seasonic M12 Bronze 620W (since 2017)

My PC is old but I kinda like using my PC parts until it broke or obsolete, I started with a Core2Duo E7400>i3-2500>G4560>i3-9100F, I am not much of a gamer. I only play 1080p 60hz.

A UPS and a surge protector are generally not recommended -- https://www.apc.com/us/en/faqs/FA158852/
What benefit do you believe you will get by replacing your power supply ?

 

[Roland Of Gilead]

Whilst an okay PSU in it's day, the Seasonic M12 is not really suitable for modern systems, and how the components draw power. Pretty sure it doesn't have all the over protections a modern good quality PSU would have.

 

[DSzymborski]

While I'd replace the SeaSonic, it's a pretty underwhelming replacement list. Is the Cooler Master you're looking at the full range one or the worse quality 230V-only one?

 

[geofelt]

Your current psu is fine, and appropriate for your graphics card.
While the seasonic is old, it is of good quality and apparently is working w/o issue.
Replacing a working unit with a similar sized unit does not make much sense to me.

It is the graphics card that demands the most power.
I would wait until you upgrade your graphics card.
When you do, look only for a quality unit with at least a 7 year warranty.
And look for a unit with the current atx3.0 capability.
Other than cost, there is no negative to an overly strong psu. I might think 850w would be right, depending on the gpu you might consider in the future.

 

[dark_globe]

your current seasonic unit is of better quality than all 3 potential replacements you have listed .
either keep your old unit or get some better and more powerful unit
which will be suitable for your future build so the upgrade will make sense .

for your current system you don´t need more powerful unit though .
gtx 1070 only draws below 200w while gaming
and power draw of i3 is so low it´s not even worth mentionig .

upgrading to a 6 core cpu might be a better idea if you can find it for cheap ,
normally i would suggest an 8 core cpu but
your motherboard doesn´t have good enough VRM to handle it properly .
gtx 1070 is still fine for recreational 60Hz 1080p gaming and older titles.