3600 + 3070, 550 or 850W

[Moonzy]

im pairing a 3600 with a 3070, can i get away with 550W or it's better to bump up to 850W?
it's a typical gaming PC with 1 or 2 HDD max, no OC or undervolting, will be running stock

i alr have the parts, but i also dont wanna just toss in the 850W if i dont have to because of weight constraints.

[Blasty Blosty]

Should be fine, 3070 will draw 250w max, 3600 will do about 150 max, so that leaves the rest for the other components. If it is a good quality psu it should be fine, which one is it?

[Moonzy]

Just now, Blasty Blosty said:

Should be fine, 3070 will draw 250w max, 3600 will do about 150 max, so that leaves the rest for the other components. If it is a good quality psu it should be fine, which one is it?

CX550M or RM850x

[Blasty Blosty]

It is a "low-end" power supply, but I think it will work. If you want to be certain and avoid any issues, then get a new PSU. But it should turn on and game just fine.

[Motifator]

At worst your fans will go crazy. Asus 550W Strix owner here, I know how it rolls... a bit.

[Moonzy]

14 minutes ago, Blasty Blosty said:

It is a "low-end" power supply, but I think it will work. If you want to be certain and avoid any issues, then get a new PSU. But it should turn on and game just fine.

I suddenly remembered that the CX550M got paired with a 3090 under 100% 24/7 load for several months, so i am not comfortable giving it to someone to use on a daily basis

RM850x it is

 case closed

[Blasty Blosty]

3 minutes ago, Moonzy said:

I suddenly remembered that the CX550M got paired with a 3090 under 100% 24/7 load for several months, so i am not comfortable giving it to someone to use on a daily basis

RM850x it is

 case closed

Good shout, better to be safe than sorry

[Blasty Blosty]

Surprised it could handle a 3090 tbh

[--SID--]

CX550M has a double forward topology on the primary side. With a 3070 GPU it would have coil wine and probably the transformer makes a loud noise because it can't handle power spikes.

[Moonzy]

1 hour ago, Blasty Blosty said:

Surprised it could handle a 3090 tbh

3900x undervolted to 0.8v or something, plus 3090 running at 70% power limit or something, but it's still near 500W mark total, 24/7 non-stop load for half a year

my UPS went kaput from that (blown MOSFET), lol, i doubt the PSU is far either
im bringing the system to other countries to give it away to a non-techy person, so i probably wanna stay on the safe side

[Blasty Blosty]

2 minutes ago, Moonzy said:

3900x undervolted to 0.8v or something, plus 3090 running at 70% power limit or something, but it's still near 500W mark total, 24/7 non-stop load for half a year

my UPS went kaput from that (blown MOSFET), lol, i doubt the PSU is far either
im bringing the system to other countries to give it away to a non-techy person, so i probably wanna stay on the safe side

Fair enough, power supplies are vitally important to keep in good shape