What is the most efficient gaming power supply available?
This page compares 4 gaming power supplies with verified specifications and prices. Top options include Seasonic PRIME TX-1300, be quiet! Dark Power 13 1300W, Lian Li RS1200G. Prices range from £230 to £2,444,952. All data is sourced from manufacturer documentation and specialist retailers.
| Product ⇅ | Price ⇅ | Wattage (W) ⇅ | Efficiency (%) ⇅ | Modularity ⇅ | Number of PCIe Connectors ⇅ | Voltage Regulation (±) ⇅ | Fanless ⇅ |
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Seasonic PRIME TX-1300
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£292.89 ≈ | 1300W | 80 PLUS Titanium, up to 94% at 50% load | ✓ | 7 | Under 0.5% | ✗ |
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The Seasonic PRIME TX-1300 is a 1300W fully modular power supply with 80 PLUS Titanium efficiency and very tight voltage regulation. Its hybrid fan control enables silent fanless operation at low loads, making it suitable for high-end gaming PCs, multi-GPU systems, and workstations. ★ Ideal forIt suits the search for the most efficient gaming power supply because its 80 PLUS Titanium certification delivers up to 94% efficiency at 50% load, while fully modular cabling, hybrid fanless operation, and under 0.5% voltage regulation support high-end gaming systems.
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be quiet! Dark Power 13 1300W
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£229.87 ≈ | 1300 W | 80 PLUS Titanium up to 94.4% | ✓ | 6 | Digital regulation | ✗ |
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This 1300 W power supply has 80 PLUS Titanium efficiency, full modular cabling, six PCIe 6+2-pin connectors, and digital control for stable power delivery. It suits high-end gaming PCs, multi-GPU systems, and demanding overclocked builds that need substantial, quiet power. ★ Ideal forIt suits the search for the most efficient gaming power supply because its 80 PLUS Titanium certification reaches up to 94.4% efficiency, reducing wasted power and heat while providing 1300 W for high-end gaming hardware. |
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Lian Li RS1200G
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£2444951.51 ≈ | 1200W | 80 PLUS Gold / Cybenetics Platinum / PPLP Gold | ✓ | 6 | 11.92V-12.03V on 12V rail | ✓ |
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The Lian Li RS1200G is a 1200W ATX 3.1 power supply with full-modular cabling, native 12V-2x6 support, and fanless operation at low loads. Its high efficiency and strong voltage regulation make it suitable for high-end gaming PCs with power-hungry CPUs and graphics cards. ★ Ideal forIt suits users seeking an efficient gaming power supply because it combines 80 PLUS Gold and Cybenetics Platinum efficiency certifications with measured efficiency above 91% and a fanless low-load mode. |
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SilverStone Extreme 1200R Platinum
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£318.80 ≈ | 1200 W | 80 Plus Platinum | ✓ | 4 | Tight | ✗ |
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The SilverStone Extreme 1200R Platinum is a compact, fully modular 1200 W SFX-L power supply with 80 Plus Platinum efficiency and ATX 3.1 compatibility. Its semi-fanless 120 mm fan, 12V-2x6 connector, and small form factor suit powerful small-form-factor gaming PCs. ★ Ideal forIt suits the search for the most efficient gaming power supply because its 1200 W output carries an 80 Plus Platinum rating, reaches 91% efficiency, and uses semi-fanless cooling to reduce noise during low-load gaming.
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