SilverStone's 2,500W PSU powers up to four RTX 5080s - or three 5090s - without breaking a sweat

[zohaibahd]

In a nutshell: SilverStone's long-teased powerhouse PSU has finally hit the market. The HELA 2500Rz is a formidable 2,500-watt unit designed for the most extreme PC builds imaginable – assuming, of course, that your electrical setup can handle the load.

First unveiled over a year ago, the HELA 2500Rz took its sweet time transitioning from prototype to production, but it's finally official. And while it technically supports up to four RTX 5090 graphics cards, there's a significant catch: you'll need a 200 – 240V outlet to unlock its full potential.

That's standard fare in Europe and some other regions, but in the US where most homes run on 110V, you'll be capped at around 1,350W – just over half of its maximum output. So, if you're planning to run multiple high-end GPUs, you'll likely need a dedicated outlet or a voltage converter, much like with Thermaltake's Toughpower D2000 PSU.

The PSU is fully compliant with ATX 3.1 and PCIe 5.0 standards and comes equipped with four native 12V-2x6 power connectors. That means it's ready to handle up to four RTX 5080s or three RTX 5090s, with some room left for your CPU and other components. Running four RTX 5090s is technically possible, but you'd be sacrificing headroom for everything else unless your build is literally just GPUs.

Beyond its absurd wattage, the HELA 2500Rz doesn't skimp on premium features. It's Cybernetics Platinum certified for excellent efficiency and packs high-quality Japanese capacitors, along with all the standard protection mechanisms (OCP, OVP, UVP, SCP, OTP, and OPP). The unit is also rated for continuous 24/7 operation at up to 50°C, making it a solid choice for professional workstations or AI rigs that need to run nonstop.

Cooling is handled by a 135mm dual ball-bearing fan that only kicks in above 10 percent load, helping to keep noise to a minimum. Even under full load, the fan remains reasonably quiet, topping out just above 2000 RPM.

It's also surprisingly compact for such a brute, with a 200mm depth that should fit in most full-sized cases. And since it's fully modular, cable management is as clean as it gets, assuming you can wrangle the jungle of cables needed to power multiple GPUs.

SilverStone hasn't revealed pricing or exact availability as of this writing, but with a feature set like this, don't expect it to come cheap.

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SilverStone's 2,500W PSU powers up to four RTX 5080s - or three 5090s - without breaking a sweat

 

[brunocasarini]

"Supports up to four RTX 5090 graphics cards" until their connectors melt.

 

[yRaz]

there's a significant catch: you'll need a 200 – 240V outlet to unlock its full potential.

And there it is, folks, how the "computer room" will make a comeback, you'll need to run a 220 line to whatever room you want to run your computer in. That, or nVidia will be responsible for the US's move to 220. Technically, we are already on 220, it's just split phase 220 with +120/-120. Actually, I think it's more complicated than that. We're technically 3 phase 440V but houses only have 2, 120V phases run that are 120 degrees out of phase instead of 180 and that's how we end up with our 208V in most homes

 

[MiqWalsh]

And there it is, folks, how the "computer room" will make a comeback, you'll need to run a 220 line to whatever room you want to run your computer in. That, or nVidia will be responsible for the US's move to 220. Technically, we are already on 220, it's just split phase 220 with +120/-120. Actually, I think it's more complicated than that. We're technically 3 phase 440V but houses only have 2, 120V phases run that are 120 degrees out of phase instead of 180 and that's how we end up with our 208V in most homes

Christ on a bike. And here was me thinking UK 3-phase electrics were a nightmare. I'd hate to be a sparky in the US.

Tell me; do American homes HAVE an "earth" setup? 'Cos we did away with 2-pin plugs many decades ago... Or has that now changed?

Genuinely curious.

 

[yRaz]

Christ on a bike. And here was me thinking UK 3-phase electrics were a nightmare. I'd hate to be a sparky in the US.

Tell me; do American homes HAVE an "earth" setup? 'Cos we did away with 2-pin plugs many decades ago... Or has that now changed?

Genuinely curious.

We have a third pin, but many appliances don't make use of it. Anything built 1973 and after is supposed to have a third pin with a direct path to ground. Not negative/black ground, like real ground, earth ground. The third pin is supposed to be connected by wire to a piece of steel rebar buried in the ground. Whether or not modern builders follow this code is a complete mystery, I see homes built in 2025 without a proper earth pin all the time.

 

[BuckarooBonzaii]

Perhaps just owning and displaying a 2,500w PC PS is exciting enough.

 

[sreams]

And there it is, folks, how the "computer room" will make a comeback, you'll need to run a 220 line to whatever room you want to run your computer in. That, or nVidia will be responsible for the US's move to 220. Technically, we are already on 220, it's just split phase 220 with +120/-120. Actually, I think it's more complicated than that. We're technically 3 phase 440V but houses only have 2, 120V phases run that are 120 degrees out of phase instead of 180 and that's how we end up with our 208V in most homes

You could also run a 30 amp 120V plug (like for an RV).

 

[VitalyT]

I don't know how much it will cost, but electricity will cost more.

 

[stewi0001]

We have a third pin, but many appliances don't make use of it. Anything built 1973 and after is supposed to have a third pin with a direct path to ground. Not negative/black ground, like real ground, earth ground. The third pin is supposed to be connected by wire to a piece of steel rebar buried in the ground. Whether or not modern builders follow this code is a complete mystery, I see homes built in 2025 without a proper earth pin all the time.

when I got my circuit breaker upgraded, they put 2 bars in the ground.

 

[yRaz]

when I got my circuit breaker upgraded, they put 2 bars in the ground.

Keep in mind that I'm a commercial concrete guy so residential electrical code isn't my thing. To the best of my knowledge, the run of an earth ground cannot exceed 100ft so depending on the size of your house, it may call for multiple grounds in different places but both of them should be connected internally. In commercial buildings it isn't uncommon for us to install multiple earth grounds under the slab and leave a large copper wire sticking up through the concrete for the electricians to tap into. We're also supposed to connect the earthgrounds to the wire mesh/rebar inside the concrete.

 

[Vaneheart]

Four RTX 5090s is a down payment on a house. Despite the fact that no one in the US can go to a store and buy one.

That said, I assume this is intended for mining or AI applications, unless DirectX12 Multigpu or SLI have suddenly made a comeback?

 

[airbornex]

Finally, a PSU that doubles as a space heater and a conversation starter for your local electrician.

 

[Jme Kerul]

when I got my circuit breaker upgraded, they put 2 bars in the ground.

You don't happen to have a tramway close by to your residence?
I remember the em field distortion the tram leaves in the ground when it passes less than 50 meters from the ground rebar, from an electrician magaz6.