Antec Signature 2200W PSU Review (2025)

1. Introduction2. Bundle & Cabling3. External4. Internal5. Testing Methodology and Results6. Closing Thoughts7. View All Pages

Today we look at a new flagship power supply from Antec –  a unit so important Antec call it their ‘Signature'. This 2,200 watt behemoth is going to hit the UK market in a few weeks priced at £449.99, offering Cybenetics Titanium certification and support for the ATX 3.1/PCIe5.1 spec. It also ships with a full 12-year warranty.

Antec literature on the product is keen to highlight the adoption of 105C-rated Japanese capacitors inside. While 2200 watts is a little much for gamers today, Antec say it is designed for workstations, ‘professional workloads' and ‘AI and EDGE computing'. Everyone seems to focus on AI today of course, so that's always going to be a key selling point. Perhaps if you are running multiple RTX 5090 graphics cards, it is also a solid option for consideration.

The OEM for this power supply is Seasonic, based on their Prime PX-2200 ATX 3 unit released earlier this year.

Antec Signature 2200W Features:

• 80 Plus Platinum.
• Cybenetics Titanium (230v).
• ATX 3.1 and PCIe 5.1 Ready.
• 135mm Fluid Dynamic Bearing Fan.
• 12 Year Warranty Support.
• High End Components and Design.
• Highly Reliable aluminium electrolytic solid capacitors.
• Protection features: OPP, OVP, UVP, OCP, OTP, SCP.
• Fully Modular.

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