# Which gaming power supply offers the best performance for the price? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which gaming power supply offers the best performance for the price?

## Products

### be quiet! Straight Power 12 750W
```yaml
product: be-quiet-straight-power-12-750w
brand: be quiet!
price_gbp: 117.71
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
fanless: false
wattage: 750W
efficiency: 80 PLUS Platinum; 92.9%
modularity: Fully modular
voltage_regulation: 0.9% on 12V rail
number_of_pcie_connectors: 5
```

- **Price:** £117.71 [^1]
- **Summary:** The be quiet! Straight Power 12 750W is a fully modular, 80 PLUS Platinum power supply with a 135mm fan and five PCIe connectors, including a 12VHPWR connector. Its strong efficiency and precise voltage regulation suit modern mid-range and high-end gaming PCs.
- **Ideal For:** It suits gamers seeking the best performance for the price because it combines 750W capacity, 80 PLUS Platinum efficiency, fully modular cabling, five PCIe connectors, and 0.9% 12V voltage regulation.
- **Additional Sources:** [^2]

### be quiet! Pure Power 13 M 650W
```yaml
product: be-quiet-pure-power-13-m-650w
brand: be quiet!
price_gbp: 62.84
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
fanless: false
wattage: 650W
efficiency: 80 PLUS Gold up to 94.2%
modularity: Fully modular
voltage_regulation: 1% on 12V rail
number_of_pcie_connectors: 3
```

- **Price:** £62.84 [^3]
- **Summary:** The be quiet! Pure Power 13 M 650W is a fully modular ATX 3.1 power supply with 80 PLUS Gold efficiency reaching up to 94.2%. It includes two PCIe 6+2 connectors and one 12V-2x6 connector, making it suitable for quiet mid-range gaming PCs and modern graphics cards.
- **Ideal For:** It offers strong performance for the price with 650W output, up to 94.2% efficiency, excellent 1% 12V voltage regulation, fully modular cabling, and support for modern PCIe 5.1 graphics cards.
- **Additional Sources:** [^4], [^5]

### Cooler Master MWE Gold 850 V3
```yaml
product: cooler-master-mwe-gold-850-v3
brand: Cooler Master
price_gbp: 95.38
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
fanless: false
wattage: 850W
efficiency: 80 PLUS Gold, ≥90% at typical load
modularity: Fully modular
voltage_regulation: DC-to-DC
number_of_pcie_connectors: 4 PCIe 6+2-pin and 1 12V-2x6
```

- **Price:** £95.38 [^6]
- **Summary:** The Cooler Master MWE Gold 850 V3 is an 850W fully modular ATX 3.1 power supply with 80 PLUS Gold efficiency and a native 12V-2x6 connector for modern graphics cards. Its zero-RPM mode, Japanese main capacitor, and 10-year warranty make it suitable for gaming PCs ranging from mainstream builds to high-performance systems.
- **Ideal For:** It offers strong performance for the price with 850W capacity, 80 PLUS Gold efficiency, fully modular cabling, four PCIe 6+2 connectors, a native 12V-2x6 connector, and zero-RPM operation at low loads.
- **Additional Sources:** [^7], [^8]

### be quiet! Dark Power 13 1000W
```yaml
product: be-quiet-dark-power-13-1000w
brand: be quiet!
price_gbp: 184.84
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
number_of_pcie_connectors: 5
```

- **Price:** £184.84 [^9]
- **Summary:** This 1000W fully modular power supply uses 80 PLUS Titanium efficiency and supports ATX 3.0 and PCIe 5.0 graphics cards. It suits high-end gaming PCs, overclocked systems, and builds where quiet operation and efficient power delivery are important.
- **Ideal For:** It offers strong performance for the price with 1000W output, Titanium efficiency up to 95.2%, five PCIe connectors including a 600W 12VHPWR connector, and an overclocking key for single-rail operation.

### NZXT C1500 Platinum
```yaml
product: nzxt-c1500-platinum
brand: NZXT
price_gbp: 244.0
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
fanless: true
wattage: 1500 W
efficiency: 80 PLUS Platinum
modularity: Fully modular
voltage_regulation: Digital power
number_of_pcie_connectors: 8
```

- **Price:** £244.0 [^10]
- **Summary:** The NZXT C1500 Platinum is a 1500 W, 80 PLUS Platinum, fully modular ATX 3.1 power supply with two 12V-2x6 connectors and six 6+2-pin PCIe connectors. Its digital power design provides precise voltage regulation, while the 140 mm magnetic levitation fan supports zero-fan operation. It suits high-end gaming PCs, multi-GPU systems, and demanding workstations.
- **Ideal For:** It offers strong performance for the price with 1500 W of capacity, 80 PLUS Platinum efficiency, fully modular cabling, digital voltage regulation, and eight PCIe connectors for demanding modern GPUs.
- **Additional Sources:** [^11]

---
## References & Sources
[^1]: Arvutitark, accessed 2026-09-03. https://arvutitark.ee/en/pc-components/power-supplies-psu/750w-be-quiet-straight-power-12-80platinum-1270038
[^2]: Tokopedia, accessed 2026-09-03. https://www.tokopedia.com/find/be-quiet-750w
[^3]: CCL Computers, accessed 2026-09-03. https://www.cclonline.com/bp025eu-650w-be-quiet-pure-power-13-m-modular-80-plus-gold-psu/
[^4]: PCCaseGear, accessed 2026-09-03. https://www.pccasegear.com/products/69998/be-quiet-pure-power-13-m-650w-power-supply
[^5]: PB Tech, accessed 2026-09-03. https://www.pbtech.co.nz/product/PSUBQT51110/be-quiet-Pure-Power-13-M-650W-Power-Supply-80-Plus
[^6]: Newegg, accessed 2026-09-03. https://www.newegg.com/cooler-master-atx-12v-ver-3-0-850-w-80-plus-gold-certified-power-supply-black-mpx-8503-afag-2buv/p/N82E16817171241
[^7]: Adorama, accessed 2026-09-03. https://www.adorama.com/coolermaster-mwe-gold-850-v3-850w-80-plus-modular-atx-power-supply-black/p/cmmpx8503guv
[^8]: CompuDevices, accessed 2026-09-03. https://www.compudevices.com/mpx-8503-afag-2buv-cooler-master-mwe-gold-850-watts-power-supply
[^9]: Central Computers, accessed 2026-09-03. 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
[^10]: Newegg, accessed 2026-09-03. https://www.newegg.com/nzxt-atx12v-v3-1-eps12v-v2-92-1500-w-80-plus-platinum-certified-power-supplies-black-pa-5p1bb-us/p/1HU-001J-000C6
[^11]: GreenAppleCompuNet, accessed 2026-09-03. https://greenapplecompunet.com/product/nzxt-c1500-platinum-atx-3-1-fully-modular-power-supply-black/