PSU help

[Bryan999]

Hi first time pc builder here, need help choosing a psu this is my potential build:
AMD 9800x3d
AMD 9070 xt
64gb ram
msi b850 edge ti MB

looking for a 850w-1000w psu
but need at least 3 pcie for gpu and because i am worried about my old house with its electric i need a psu with a low inrush when initially switching on the psu for the pc.

[x]

Originally posted by Bryan999:

Hi first time pc builder here, need help choosing a psu this is my potential build:
AMD 9800x3d
AMD 9070 xt
64gb ram
msi b850 edge ti MB

looking for a 850w-1000w psu
but need at least 3 pcie for gpu and because i am worried about my old house with its electric i need a psu with a low inrush when initially switching on the psu for the pc.

I'm not getting the issue with your house power. Do you have a very low service power? The PC's startup takes a little bit more power but it's not a huge deal more. You will probably be going through the same power (or even more) if gaming full blast, so be aware of that. Whatever build you go for, you will always have to assume high power drain, considering the CPU, GPU, RAM and whatnot you are getting, so whatever the power calculations come at, you will need that (obivously give it some "extra").

One possible (not sure if viable) option is to get a UPS/power station (more or less the same for this practical example) with an input power limiter. I'm not sure that even exists on a small scale.

So what does the power limiter do? Basically, it limits the amount of power a device is allowed to "draw" out of the grid. In theory, a UPS with a power limiter could draw (for example) only the equivalente of 500w from the grid. If the needs of the computer go above, the "rest" of the power goes from the battery. When it goes lower, the battery tops up.

I know there are some models that allow that. Schneider Electric and Huawei might have them, but usually only big systems, not exactly fit for 1 computer. Mostly used for renewable energy systems or industrial settings.

AFAIK, most, it not all, UPS are sold with output and energy capacity in mind. You can find UPS units with low input, but they will also be low output and charge capacity. Just like electric cars. If you take a car that charges at 50kw but the local charge station only goes so far as 30, the car will charge at 30, just slower. That's the sort of limiter you would need on a UPS (lower power, obviously).

But maybe try to get a hold of an electrical engineer or renewable energy company. But they will charge you good money for it.

[Bryan999]

hi thanks for the reply, its just that its a old house and my current 8 year old pc had its psu after 5 years sparking when switching the switch on the back of the pc and a few times later it went boom and stopped working, i presume it was just the psu's fault but it might not have been, i am just apprehensive i suppose.

[Rumpelcrutchskin]

https://pcpartpicker.com/product/sqbypg/montech-century-ii-850-w-80-gold-certified-fully-modular-atx-power-supply-century-ii-850w

https://pcpartpicker.com/product/LPBzK8/msi-mag-a850gl-pcie5-850-w-80-gold-certified-fully-modular-atx-power-supply-mag-a850gl-pcie5-white

https://pcpartpicker.com/product/zBbypg/corsair-rm850e-2025-850-w-fully-modular-atx-power-supply-cp-9020296-na

[Bryan999]

thanks for the swift response, i have had a look and here are the results:
montech - according to reviews it has high inrush when switching on and has 6x pcie but there are on 3 cables.
msi mag - high ish inrush when switching on, only 2x 8 pin pcie connectors
rm850e - already considering the higher quality version the rm850x.

[Arbiter of mediocrity]

All current atx 3.1 PSUs come with at least 2x 10pin splitter to 6+2pin VGA cables which you can use for any PCIe ports. Be it your motherboard port at the bottom or your GPU. However I'm not sure if the splitter is long enough to reach that bottom port of the motherboard.

So far for me be quiet has been reliable. You don't need the high end dark power pro models. Pure power 13m would do.

[ˢᵈˣ FatCat]

i think any PSU will kaput if your main circuit is the problem, just upgrade your electricity or something,
for PSU any well known brand is good : Seasonic

[_I_]

Originally posted by Bryan999:

thanks for the swift response, i have had a look and here are the results:
montech - according to reviews it has high inrush when switching on and has 6x pcie but there are on 3 cables.
msi mag - high ish inrush when switching on, only 2x 8 pin pcie connectors
rm850e - already considering the higher quality version the rm850x.

any psu over 800w is going to have high inrush, just to charge its primary side caps

https://pcpartpicker.com/products/power-supply/#A=850000000000,2800000000000&e=6,5,4&J=1,4&G=3,18&p=1,3,2&m=337,11,14,71&sort=price&page=1

[hawkeye]

A powerboard can also be the cause of electrical problems.

[x]

Could have just been the PSU. They fail anyway. I would start with getting a good electrician to check the house. Could be even be the power grid outside. A friend of mine had lots of issues and when he had it checked out, the power was rather unstable.
A regular stabilizing UPS is probably enough for that. Just get something that doesn't draw too much power, but I would say you would need something in the region of a 2500VA UPS, depending if you hook up the speakers, monitor and stuff to it.
You can use this calculator here:

https://upsselector.eaton.com/Load

Just don't get a too power UPS as they will draw more power to charge the batteries (unless you find one with an input limiter like I said above, but don't even know if they exist in small form). Judging from your issue, you don't need much "battery", but more of a safeguard. Back in the olden days people used to have power stabilizer for the TVs

Here is some more reading material.

https://www.reddit.com/r/buildapc/comments/11qqwz5/do_i_need_a_ups_or_stabilizer_for_my_pc/

But before buying, I would call in an electrician to test the house's power grid (I personally can do it myself, but don't mess with electricity if you don't know what you are doing... it is dangerous),

[wing0zero]

I buy Seasonic PSU's mainly, if you buy most brands you don't know if it's Super Flower, Seasonic, CWT, FSP used inside or some really crappy no brand internals, if you buy a Seasonic you know it's a Seasonic inside.

That said you can usually trust Corsair.

Originally posted by Rumpelcrutchskin:

https://pcpartpicker.com/product/LPBzK8/msi-mag-a850gl-pcie5-850-w-80-gold-certified-fully-modular-atx-power-supply-mag-a850gl-pcie5-white

Take this MSI MAG, looks good but I've seen this range fail PSU tests when tested.

Full fail - https://www.lttlabs.com/products/power-supplies/msi-mpg-a1000g-pcie5

Partial Fail - https://www.lttlabs.com/products/power-supplies/msi-mag-a750gl-pcie5

[wing0zero]

Originally posted by x:

Just don't get a too power UPS as they will draw more power to charge the batteries (unless you find one with an input limiter like I said above

What do you mean by that? As not to trip out the sockets (US)?

[x]

Originally posted by wing0zero:

Originally posted by x:

Just don't get a too power UPS as they will draw more power to charge the batteries (unless you find one with an input limiter like I said above

What do you mean by that? As not to trip out the sockets (US)?

Yes, kind of. I don't know the power situation at OPs house, so a UPS that draws a lot of power might cause more harm than good.

[_I_]

some corsair rm-x power supplies have a relay, that when off ill limit inrush to slowly charge its mains caps
then once charged will tick on to reconnect the mains to them

people often complain about the 'tick' sound once its plugged in
thats what its doing

once powered its fine and no more tick, until unplugged for a few seconds and its mains caps drain then it ticks again

[Kobs]

i am worried about my old house with its electric

What you need is a UPS (Uninterrupted power supply) or UPS Battery Backup and Surge Protector

[x]

If the house electrical grid is that bad, maybe the computer is not your biggest worry here.