# What are the best gaming power supplies for overclocking? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the best gaming power supplies for overclocking?

## Products

### CORSAIR RMx Shift Series RM1200x Shift CP-9020254-NA
```yaml
product: corsair-rmx-shift-series-rm1200x-shift-cp-9020254-na
brand: CORSAIR
price_gbp: 219.7
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
fanless: false
wattage: 1200W
efficiency: 80 PLUS Gold
modularity: Fully modular
number_of_pcie_connectors: 8
```

- **Price:** £219.7 [^1]
- **Summary:** This 1200W ATX power supply is fully modular, 80 PLUS Gold certified, and includes eight PCIe connectors for high-end graphics cards. Its side-mounted modular connections and Zero RPM fan mode suit powerful gaming PCs with compatible cases.
- **Ideal For:** It suits overclocking-focused gaming PCs because its 1200W capacity, strong 100A 12V rail, fully modular design, eight PCIe connectors, and Zero RPM fan mode support demanding components and quieter operation.
- **Additional Sources:** [^2]

### Seasonic Prime TX-1600
```yaml
product: seasonic-prime-tx-1600
brand: Seasonic
price_gbp: 373.87
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
fanless: false
wattage: 1600 W
efficiency: 80 PLUS Titanium, 94% at 50% load
modularity: Fully modular
voltage_regulation: Below 0.5%
```

- **Price:** £373.87 [^3]
- **Summary:** The Seasonic Prime TX-1600 is a fully modular 1600 W power supply with 80 PLUS Titanium efficiency and very tight voltage regulation below 0.5%. Its high output and ATX 3.0 and PCIe 5.0 support suit demanding gaming PCs, workstations, and systems with high-end graphics cards.
- **Ideal For:** It suits overclocking-focused gaming systems because its 1600 W capacity, 80 PLUS Titanium efficiency, hybrid fan control, and below 0.5% voltage regulation provide substantial power headroom and stable delivery under heavy loads.
- **Additional Sources:** [^4]

### Super Flower Leadex VIII Platinum PRO 1200W SF-1200F14SP
```yaml
product: super-flower-leadex-viii-platinum-pro-1200w-sf-1200f14sp
brand: Super Flower
price_gbp: 158.02
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
fanless: false
wattage: 1200W
efficiency: Cybenetics Platinum
modularity: Fully modular
number_of_pcie_connectors: 5
```

- **Price:** £158.02 [^5]
- **Summary:** This 1200W fully modular power supply uses Cybenetics Platinum efficiency, ATX 3.1 support, and a native 12V-2x6 connector for modern high-end graphics cards. Its compact 125mm design and ECO fan mode suit powerful gaming PCs and workstations where efficient, quiet operation and easy cable management matter.
- **Ideal For:** It suits overclocking-focused gaming systems because its 1200W capacity, single 12V rail, ATX 3.1 transient-power support, Platinum efficiency, and fully modular design provide substantial headroom for an overclocked CPU and high-end GPU.
- **Additional Sources:** [^6], [^7]

### Super Flower Leadex VII XP 1200W SF-1200F14XP WH
```yaml
product: super-flower-leadex-vii-xp-1200w-sf-1200f14xp-wh
brand: Super Flower
price_gbp: 140.55
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
fanless: false
wattage: 1200W
efficiency: 80 PLUS Platinum
modularity: Fully modular
voltage_regulation: ±0.5%
number_of_pcie_connectors: 5
```

- **Price:** £140.55 [^8]
- **Summary:** This 1200W fully modular power supply has 80 PLUS Platinum efficiency, ATX 3.1 compatibility, and native 12V-2x6 connectivity for modern high-end graphics cards. Its 140mm fluid dynamic bearing fan includes a semi-passive ECO mode, making it suitable for powerful gaming and workstation systems.
- **Ideal For:** It suits overclocking-focused gaming systems because its 1200W capacity, ±0.5% voltage regulation, single high-power 12V rail, Platinum efficiency, and ATX 3.1 transient-power support provide stable headroom for an overclocked CPU and GPU.
- **Additional Sources:** [^9]

### ASUS ROG Strix 1000W Platinum White Edition ROG-STRIX-1000P-GAMING-WHITE-E
```yaml
product: asus-rog-strix-1000w-platinum-white-edition-rog-strix-1000p-gaming-white-e
brand: ASUS
price_gbp: 207.12
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
fanless: Semi-passive 0dB mode
wattage: 1000W
efficiency: 80 PLUS Platinum
modularity: Fully modular
voltage_regulation: GPU-FIRST intelligent voltage stabilizer
number_of_pcie_connectors: 4 x 6+2-pin PCIe and 1 x 16-pin PCIe 5.1 12V-2x6
```

- **Price:** £207.12 [^10]
- **Summary:** This fully modular 1000W power supply has 80 PLUS Platinum efficiency, ATX 3.1 support, and a native 12V-2x6 connector for modern graphics cards. Its semi-passive 0dB mode, GaN MOSFETs, and GPU-FIRST voltage stabilizer suit high-end gaming PCs and demanding white-themed builds.
- **Ideal For:** It suits overclocking-focused gaming systems with 1000W capacity, Platinum efficiency, ATX 3.1 regulation, and a GPU-FIRST voltage stabilizer designed to improve graphics-card voltage stability during demanding loads.
- **Additional Sources:** [^11]

### be quiet! Dark Power 13 1000W BN661
```yaml
product: be-quiet-dark-power-13-1000w-bn661
brand: be quiet!
price_gbp: 184.93
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
fanless: false
wattage: 1000W
efficiency: 80 PLUS Titanium, up to 95.2%
modularity: Fully modular
voltage_regulation: Active rectifier and full bridge LLC technology
number_of_pcie_connectors: 4 PCIe 6+2 pin and 1 PCIe 12+4 pin
```

- **Price:** £184.93 [^12]
- **Summary:** The be quiet! Dark Power 13 1000W is a fully modular, 80 PLUS Titanium power supply with 1000W of continuous output and support for modern PCIe graphics cards. Its Silent Wings fan, four 12V rails, overclocking key, and advanced topology suit high-end gaming PCs that need efficient and stable power.
- **Ideal For:** It suits overclocking-focused gaming systems because it provides 1000W, four switchable 12V rails, an overclocking key for single-rail operation, 95.2% Titanium efficiency, and four PCIe 6+2 pin connectors plus a 12+4 pin connector.
- **Additional Sources:** [^13]

---
## References & Sources
[^1]: Zones, accessed 2026-09-05. https://www.zones.com/site/product/index.html?id=111434035
[^2]: Desertcart Guyana, accessed 2026-09-05. https://guyana.desertcart.com/products/511987747
[^3]: Skroutz, accessed 2026-09-05. https://www.skroutz.mt/s/46531072/Seasonic-Prime-TX-ATX30-1600W-Black-Computer-Power-Supply-Full-Modular-80-Plus-Titanium.html
[^4]: Desertcart India, accessed 2026-09-05. https://desertcart.in/products/539617254-seasonic-prime-tx-1600-1600w-power-supply-atx-3-1
[^5]: AVADirect, accessed 2026-09-05. https://www.avadirect.com/Leadex-VIII-Platinum-PRO-80-PLUS-Platinum-1200W-ECO-Mode-Fully-Modular-ATX-Power-Supply/Product/20346836
[^6]: CompuDevices, accessed 2026-09-05. https://www.compudevices.com/sf-1200f14sp-super-flower-leadex-viii-platinum-pro-1200-watts-atx-3-1-pcie-5-1-native-12v-2x6-cable-cybenetics-platinum-power-supply
[^7]: TechGlobe, accessed 2026-09-05. https://www.techglobe.pk/super-flower-leadex-viii-platinum-pro-1200w-atx-31-pcie-51-power-supply-white-sf1200f14spt
[^8]: Best Buy, accessed 2026-09-05. https://www.bestbuy.com/product/super-flower-leadex-vii-xp-1200w-80-platinum-full-modular-atx-3-1-power-supply-white/C34528PR5J/sku/11198790
[^9]: Beach Audio, accessed 2026-09-05. https://www.beachaudio.com/super-flower-sf-1200f14xp-wh-leadex-vii-pro-sf-1200f14xp-1200w-power-supply-sf1200f14xp-wh/
[^10]: ITSpot Computer Components, accessed 2026-09-05. https://www.itspot.com.au/asus-internal-power-supply-psu-c1160_1232_1234-f186.html
[^11]: ASUS Canada, accessed 2026-09-05. https://rog.asus.com/ca-en/power-supply-units/rog-strix/rog-strix-1000p-gaming-white/
[^12]: Central Computers, accessed 2026-09-05. https://www.centralcomputer.com/be-quiet-bn661-dark-power-13-1000w-power-supply-80-plus-titanium-rated-135mm-silent-wings-fan-atx-3-0-fully-modular.html
[^13]: Desertcart India, accessed 2026-09-05. https://www.desertcart.in/products/510217428-dark-power-13-1000w-quiet-performance-power-supply-80-plus-titanium-efficiency-atx-3-1-pcie-5-modular-bn661