here!
I’m your shopping assistant for PC builds, upgrades, and everything tech.
Got questions? Ask away!
Start a conversation
Best Sellers
- $739.19
- + FREE SHIPPING
SilverStone Technology HELA 2500Rz Cybenetics Platinum 2500W ATX 3.1 & PCIe 5 Fully Modular ATX Power Supply SST-HA2500R-PM
- Compliant with ATX 3.1 and PCIe Gen 5 standards, supporting 12V-2x6 PCIe connectors
- 4 x native 12V-2x6 connectors with cables included, supporting RTX 40/50 series GPUs.
- High efficiency with Cybenetics Platinum certification
- 24/7 continuous power output with 50? operating temperature
- Fully modular design with SilverStone’s 3rd generation modular interface
- Silent running 135mm dual ball bearing fan with delayed shut-off function
- Compact 200mm depth design allows for easy system integration
+
+
Overview
Specs
Reviews
See all Q & A 
Any questions? Ask CelesteSM will help you find out quickly.
Try me now
SilverStone introduces the latest addition to its HELA series lineup - the HELA 2500Rz. This PSU stands as the highest wattage unit SilverStone has ever released in response to the ever increase of AI workstation power consumption, the HELA 2500Rz, designed in strict compliance with the latest ATX 3.1 standard, ensuring top-notch performance and reliability with components that adhere to the ATX 3.1 specification.
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 1 year
- Limited Warranty period (labor): 1 year
- Read full details
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by Newegg.com's 30-Day Return Policy.
- Read full return policy for details.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: +1-909-465-9596
- Support Email: usasupport@silverstonetek.com
- Support Website
- View other products from SilverStone
LOADING...
LOADING...
The SilverStone HELA 2500Rz is a 2500W fully modular ATX 3.1 power supply with Cybenetics Platinum efficiency and four native 12V-2x6 connectors, making it suitable for extreme gaming PCs, workstation builds, and systems using multiple high-end RTX 40- or RTX 50-series GPUs.
Recommended For
- Multi-GPU AI, rendering, or simulation workstation builders who need one PSU for several high-end graphics cards, including configurations built around multiple RTX 5080 or RTX 5090 GPUs.
- Extreme workstation users running several power-hungry GPUs and CPUs simultaneously for sustained machine-learning, 3D rendering, scientific computing, or professional video workloads.
- High-end PC builders who want native ATX 3.1 and PCIe 5 power delivery with four built-in 12V-2x6 connectors instead of relying on multiple GPU power adapters.
- Long-duration compute and workstation users who value high conversion efficiency and continuous full-load operation more than low purchase cost or minimal system size.
Real-World Use Scenarios
- A creator or AI workstation uses multiple high-end GPUs for local model inference, 3D rendering, or video production. The HELA 2500Rz can supply several GPUs from one PSU, reducing the need for separate power supplies, although multi-GPU systems should be planned around the available household circuit.
- A workstation pairs a Threadripper-class processor with two or more professional GPUs for bursty AI, rendering, or simulation workloads. Users can run demanding bursts with substantial power headroom, while sustained workloads may require lower GPU power limits or a higher-capacity electrical circuit.
- A new multi-GPU build uses graphics cards with 12V-2x6 inputs. The included native cables allow the builder to connect compatible GPUs directly to the PSU, reducing reliance on adapter harnesses and making cable routing easier in a large workstation chassis.
- A long-running rendering, simulation, or AI workstation operates at high load for extended periods. The PSU maintains its rated output with measured high-load efficiency, but fan noise and heat increase as load rises, so strong case airflow and appropriate electrical service are important.
- A high-end gaming or enthusiast PC uses one flagship GPU today but may add another GPU or substantially higher-power components later. The large capacity provides upgrade margin and avoids replacing the PSU during a future platform expansion, but it is excessive for a conventional single-GPU gaming system.
- A builder installs a very high-power PSU in a full-size ATX workstation case with limited PSU clearance. The 200 mm depth is more manageable than many oversized high-wattage units, but the case should still be checked for PSU length, cable-bend room, and airflow before purchase.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | High-power server and desktop systems requiring 2500W of power and full modular cable management |
| Power Output And Input | 2500W output with support for input voltages up to 240V AC |
| Modularity And Connectors | Full modular design with 32 connectors, including a 20+4-pin ATX connector and ATX cable connectivity |
| Cooling | Air-cooled design |
| Compatibility | Compatible with server and desktop systems |
| Dimensions And Weight | Measures 7.8 L x 5.91 W x 3.39 H inches and weighs 4.94 kg |
| Model Identifiers | SilverStone HELA 2500Rz, model number SST-AX2500MCPT-A |
Reference Q&A
Q: Is the SilverStone HELA 2500Rz better than a 1200W or 1300W ATX 3.1 power supply?
A: Choose the HELA 2500Rz for multi-GPU workstations, GPU rendering systems, or extreme builds that need several native 12V-2x6 connectors and substantially more power headroom. A 1200W or 1300W ATX 3.1 unit is the more practical choice for a single-GPU gaming PC because it uses less space and capacity while still supporting modern high-power graphics cards.
Q: Should I buy the HELA 2500Rz instead of the SilverStone HELA 2050R?
A: Choose the HELA 2500Rz when your system can use more than 2050W or needs four native 12V-2x6 GPU connectors. Choose the HELA 2050R when three PCIe 5.1-class GPU connectors and slightly lower capacity are sufficient. Both are large, fully modular Platinum-class power supplies with hybrid fan operation, so the main upgrade is capacity and native GPU-connector flexibility rather than a smaller form factor.
Q: Is the HELA 2500Rz a better choice than the Super Flower Leadex 2800W for an extreme PC?
A: Choose the HELA 2500Rz when you need 100–240V input support, four native 12V-2x6 connectors, and a 200mm chassis depth. Choose the Super Flower Leadex 2800W when maximum capacity and Titanium-rated efficiency are more important and your system has a 200–240V electrical supply. The Leadex 2800W is not intended for full-power operation from a typical 115V household outlet.
Q: Can the HELA 2500Rz deliver 2500W on a normal US outlet?
A: Not at full rated capacity. Cybenetics tested the HELA 2500Rz at up to 1650W on 115V input and at 2500W on 230V input. In the United States, the 2500W rating therefore requires an appropriate 200–240V circuit; buyers using a standard 115V circuit should plan around the lower input-limited output.
Q: Is the HELA 2500Rz suitable for a compact PC case?
A: It can fit cases that specifically support a 200mm-deep ATX power supply, but it is intended for large workstation or extreme-gaming builds rather than portable or compact systems. Check the case's PSU-depth clearance, cable-routing space, and AC-input requirements before buying.
Q: Is this power supply suitable for a multi-GPU or AI workstation?
A: Yes. The 2500W capacity and four native 12V-2x6 connectors make the HELA 2500Rz suitable for extreme systems with multiple high-power GPUs, AI workloads, or other sustained high-load components. It is excessive for most single-GPU gaming PCs, so buyers should confirm their total system power requirements, motherboard support, case clearance, and available electrical circuit capacity.
Q: Does it support modern RTX 40- and RTX 50-series graphics cards without an adapter?
A: Yes, the HELA 2500Rz includes four native 12V-2x6 connectors and cables, supporting graphics cards that use the newer high-power PCIe connection. It is designed for ATX 3.1 and PCIe Gen 5 systems, but the graphics card's required wattage and connector configuration should still be checked before installation.
Q: Is a 2500W power supply overkill for a typical gaming PC?
A: Usually, yes. The HELA 2500Rz is intended for unusually demanding builds rather than standard single-GPU systems. For a typical gaming PC, its main benefits are substantial upgrade headroom, support for multiple high-power graphics cards, and reduced concern about transient loads; the trade-offs are higher capacity than needed, a large physical size, and potentially higher purchase and installation costs.
Q: Will this power supply fit in my PC case?
A: It uses a standard ATX form factor and has a 200mm depth. That size can fit many full-size ATX cases, but it may be too long for compact cases or cases with limited cable-routing space. Check the case's maximum PSU length and allow additional room for modular cable connections and cable bending.
Q: Can I reuse modular cables from another power supply with this unit?
A: Do not assume modular cables are interchangeable. Use the cables supplied with the HELA 2500Rz or cables explicitly confirmed by SilverStone for this exact model and modular interface. Connecting incompatible modular cables can damage the power supply or connected components.
Q: Is the SilverStone HELA 2500Rz suitable for a multi-GPU AI or workstation build?
A: Yes. Its 2500W capacity, four native 12V-2x6 connectors, ATX 3.1 support, and included cables make it suited to high-power systems with multiple modern GPUs. It is most appropriate for AI, rendering, or workstation builds rather than typical single-GPU PCs.
Q: Is the HELA 2500Rz a practical replacement for using two power supplies?
A: It can be, if the system’s total power demand and connector requirements fit within one 2500W unit. A single fully modular PSU simplifies system wiring, but multi-GPU builds still require careful planning for available PCIe connectors, cable routing, and circuit capacity.
Q: Can the HELA 2500Rz power RTX 40- and RTX 50-series GPUs directly?
A: Yes. The product includes four native 12V-2x6 connectors and cables, which are designed for compatible RTX 40- and RTX 50-series graphics cards. Users should still confirm the exact GPU connector and cable requirements before building.
Q: Is the HELA 2500Rz suitable for sustained high-load workloads?
A: It is designed for continuous 24/7 output and has Cybenetics Platinum efficiency certification, making it appropriate for sustained workstation or AI workloads. Actual operating noise and temperature will depend on load level, airflow, ambient temperature, and whether the system runs continuously near its maximum capacity.