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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-2×6 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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