Power Supplies
Browse power supplies at Hardvance for dependable performance, efficient power delivery and long-term system stability. Compare wattage, efficiency ratings, modular designs and connector support to choose a PSU that fits your build with confidence.
MSI MAG A650BNL Power Supply Unit 650 W 80 PLUS Bronze ATX White
In stock
£56.93 inc VAT- 650 W total power capacity with 80 PLUS Bronze certification
- Active cooling featuring a single 12 cm low-noise fan with hydro bearing technology
- Comprehensive power protection against over current, over power, over voltage, and short circuits
- Non-modular cabling design including 24-pin ATX, 5 SATA, 2 peripheral Molex, and 2 PCI Express connectors
- Compact ATX form factor measuring 140 mm width, 150 mm depth, and 86 mm height in white
- Active Power Factor Correction supporting an AC input voltage of 110 to 240 V
ASRock SL-850GW Steel Legend 850W 80 PLUS Gold Fully Modular ATX Power Supply White
In stock
£118.78 inc VAT- 850W Total Power, 80 PLUS Gold certified efficiency
- Fully-Modular cabling with Native PCIe 12V-2×6 Cable
- 13.5 cm FDB fan with iCOOL Intelligent Fan Control Mode for quiet operation (20 dB noise level)
- ATX 3.1 PSU form factor for PC builds
- Japanese Capacitors for extended lifespan
- Comprehensive power protection features
- 10-year warranty for peace of mind
ASUS TUF Gaming 1000W 80 PLUS Gold ATX 3.1 Fully-Modular Power Supply Unit Black
In stock
£133.98 inc VAT- 1000W output with 80 PLUS Gold efficiency for PC
- ATX 3.1 and PCIe 5.1 compatibility
- Fully-modular cabling for flexible installation
- Active cooling with a 13.5 cm ball bearing fan
- Military-grade capacitors for enhanced durability and lifespan
- Comprehensive power protection features including OVP, OCP, OPP, SCP, UVP, OTP
- 8-year warranty for long-term reliability
HP Poly Savi Office Universal AC Power Supply Straight Plug -9V 500mA Black
In stock
£13.38 inc VAT- Cable product type
- Compatible with Poly Savi Office Universal devices
- Black colour
- Manufactured in China
- Package weight of 300 g
- Package dimensions: 190 mm width, 210 mm depth, 55 mm height
Corsair RM750x 750W 80 PLUS Gold Modular PSU
In stock
£121.67 inc VATHere’s a short description for the Corsair RM750x 750W 80 PLUS Gold Modular PSU:
- 750W total power output
- 80 PLUS Gold certified efficiency
- Fully-Modular cabling with native 12V-2×6 GPU cable
- ATX 3.1 compliant for modern PCs
- 140mm low-noise fan with Zero RPM mode and manual override
- 10-year warranty
Antec CX600M Trio ARGB PSU White
In stock
£68.05 inc VAT- Mini Tower PC case with transparent and white aesthetic
- Seamless tempered glass panels for triple transparent view
- Dual chamber design for independent CPU/GPU and PSU/drive cooling
- Pre-installed with 3 x 120mm ARGB fans for multi-colour illumination
- Support for ITX and Micro-ATX motherboards
- Maximum GPU length of 41 cm and CPU cooler height of 16 cm
- I/O panel includes USB 2.0, USB 3.0, Type-C 5Gbps, and combo audio jack
MSI MAG A1200PLS 1200W PCIe 5 ATX PSU Black
In stock
£171.86 inc VAT- 1200W total power with 80 PLUS Platinum efficiency
- ATX 3.1 and PCIe 5.1 support for NVIDIA 50 series graphics cards and AI PCs
- Fully-modular cabling for flexible installation
- Quiet operation with a 13.5 cm active cooling fan
- 6 SATA power connectors and 3 PCI Express 6+2 pin connectors
- Compact ATX form factor: 150mm width, 150mm depth, 86mm height
VIDA ATX-500W-WHT 500W ATX PSU White
In stock
£27.00 inc VAT- 500W total power with 80 PLUS Bronze certification
- ATX form factor, white product colour
- 12 cm active cooling fan with hydro bearing technology
- Non-Modular cabling, includes 6 SATA and 2 PCI Express (6+2 pin) connectors
- Equipped with an On/off switch
- Compliance certificates: CB, CE, FCC, UKCA, CCC, RoHS
- Two-year warranty
ASUS ROG STRIX 1200P 1200W ATX PSU
In stock
£238.18 inc VAT- 1200W total power output
- 80 PLUS Platinum certification for high efficiency
- Active cooling system with one fan
- Fully-modular cabling for easy management
- ATX 3.1 compliance with native 12V-2×6 connector
- Multiple power protection features including over current and short circuit
- GaN MOSFET for premium power efficiency
ASUS ATS-750G 750W ATX Power Supply
In stock
£60.54 inc VAT- 750W ATX Power Supply for PC builds
- 80 PLUS Gold certification for up to 92% efficiency
- Active cooling with a single ball bearing fan for extended lifespan
- Fully-modular cabling for easy installation and management
- Comprehensive power protection features including Over Current, Over Voltage, and Short Circuit
- Includes AC, PCIe, and SATA cables for immediate setup
- Compact design measuring 150mm x 140mm x 86mm
Asrock TC-1300T 1300W ATX Power Supply
In stock
£289.56 inc VAT- 1300W ATX power supply with 80 PLUS Titanium certification
- ATX 3.1 and PCIe 5.1 compliant for future-proof systems
- iCOOL Intelligent Fan Control with silent operation below 15 dB on average
- +5V Boost Mode for consistent voltage delivery
- Fully-modular cabling for easy installation and cable management
- Comprehensive power protection features for component safety
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Corsair RM1000x Shift 1000W ATX 3.1 PCIe 5.1 Gold Modular PSU
In stock
£160.61 inc VAT- 1000W Total Power Output with single +12V rail
- 80 PLUS Gold and Cybenetics certified efficiency
- Revolutionary side-mounted modular connections for easy cable management
- ATX 3.1 compliant for high reliability and power efficiency
- 140mm fluid dynamic bearing fan with Zero RPM mode for quiet operation
- Includes 7x 6+2 Pin PCIe and 16x SATA power connectors
- Compatible with ATX PSU format cases at least 210mm wide
Corsair RMe Series RM1000e 1000W ATX PSU White
In stock
£142.68 inc VAT- 1000W total power with 80 PLUS Gold certification
- Fully-modular cabling with dedicated 12V-2×6 GPU power cable
- ATX 3.1 certified and PCIe 5.1 compliant
- Active cooling with a 14 cm fan and FDB bearing technology
- Compact 140mm depth for easy fit in PC cases
- White product colour for aesthetic build matching
- 100,000 hours Mean Time Between Failures (MTBF)
Corsair RM1000x 1000W 80 PLUS Gold Modular ATX PSU
In stock
£160.61 inc VAT- 1000W total power
- 80 PLUS Gold certified efficiency
- Fully-Modular cabling type
- ATX form factor with ATX version 3.1
- Active cooling with 1 fan and silent mode
- 100,000 hours Mean Time Between Failures (MTBF)
- Extensive connectivity: 12 SATA, 6 PATA, 4 PCI Express 6+2 pin, and 1 PCI Express 12+4 pin connectors
Corsair HXi Series HX1200i 1200W ATX Modular PSU
In stock
£238.39 inc VAT- Total power of 1200 W with 80 PLUS Platinum certification
- Fully-modular cabling for flexible connections, including two 12V-2×6 cables
- ATX 3.1 certified and ready for high-end GPUs
- CORSAIR iCUE software for performance monitoring and fan speed control
- Quiet operation with a 14 cm FDB fan and Zero RPM mode
- Constructed with 100% Japanese capacitors for reliability
- Compact ATX form factor, measuring 150 mm x 180 mm x 86 mm
Corsair HX1500i 1500W 80 PLUS Platinum Modular ATX PSU
In stock
£273.98 inc VAT- 1500W total power with 80 PLUS Platinum certification
- Fully-modular cabling for flexible connections
- ATX 3.1 certified and ready for high-end GPUs with dual 12V-2×6 cables
- iCUE software for performance monitoring and fan speed control
- Quiet operation with a 14 cm FDB fan and Zero RPM mode
- 100% Japanese capacitors for reliability and long lifespan
- Designed for PC/Server use, measuring 150 x 180 x 86 mm
Asrock Challenger CL-850G 850W ATX PSU Black
In stock
£80.68 inc VAT- 850 W total power for PC systems
- 80 PLUS Gold certified efficiency
- Active cooling with a 12 cm fan
- ATX form factor with ATX version 3.1
- Native PCIe 12V-2×6 cable included
- Dual colour design with ASRock Classic Green connectors
- Comprehensive power protection features
ASUS ROG THOR 1000P3 1000W 80 PLUS Platinum ATX PSU Black
In stock
£337.43 inc VAT- 1000W total power with 80 PLUS Platinum certification for high efficiency
- ATX 3.1 version and fully-modular cabling for flexible installation
- Illumination and an OLED display with magnetic attachment
- Integrated ROG Equalizer 12V-2×6 PCIe power cable to reduce heat stress
- Advanced power protection features including over current and short circuit
- Dedicated CPU, PCIe, SATA, and Peripheral (Molex) cables included
ASUS ROG THOR 1200P3 1200W ATX Power Supply
In stock
£396.97 inc VAT- 1200W total power output for PC systems
- 80 PLUS Platinum and Cybenetics Platinum certifications
- ATX 3.1 version with fully-modular cabling
- Active cooling with a single fan and illumination
- OLED display with magnetic attachment
- Integrated ROG Equalizer 12V-2×6 PCIe power cable
- Comprehensive power protection features
Asrock PG-1000G 750W ATX PSU Black
In stock
£224.11 inc VAT- 750 W ATX 3.1 & PCIe 5.1 compliance for future-proof builds
- 80 PLUS Gold efficiency with Cybenetics Lambda A acoustic certification
- 13.5 cm FDB fan with iCOOL intelligent fan control mode
- Fully-modular cabling with 9 SATA, 5 PCIe 6+2 pin and 2 EPS connectors
- Comprehensive power protection including over current, voltage, heat and short circuit
- 10-year warranty with 100,000 h MTBF for long-term reliability
Power Supplies (PSUs) Buying Guide and FAQ
A good power supply keeps your PC stable and protects the parts inside it. Below are clear answers to the questions we are asked most about PSUs in the UK, covering wattage, the 80 Plus ratings, ATX 3.1 and the 12V-2x6 connector, and SFX units for small builds.
What wattage power supply do I need?
Size the PSU around your graphics card. As a rough guide, a mid-range build is happy on a quality 650W or 750W unit, a high-end card wants 850W to 1000W, and an RTX 5090 build is best on 1000W or more. It is fine to leave some headroom, which keeps the PSU running cool and quiet. A 750W or 850W 80 Plus Gold unit suits most gaming PCs.
What do the 80 Plus Bronze, Gold and Platinum ratings mean?
80 Plus measures how efficiently a PSU turns wall power into PC power, which affects heat and running costs. Bronze is the entry level, Gold is the popular sweet spot for quality and value, and Platinum or Titanium are premium and most efficient. For most gaming builds, a reputable 80 Plus Gold unit is the one to choose.
Do I need an ATX 3.1 PSU with a 12V-2x6 connector?
Modern Nvidia cards use the 12V-2x6 (12VHPWR) power connector. An ATX 3.1 PSU provides this natively, so you avoid adapters and get better support for the brief power spikes a graphics card can draw. If you are buying a new high-end graphics card, an ATX 3.1 unit with the right connector is the cleaner choice.
SFX or ATX power supply, which do I need?
ATX is the standard size that fits most mid and full tower cases. SFX is a smaller unit for mini-ITX and small-form-factor builds where a full-size PSU will not fit. Check what your case supports before buying, since the wrong size simply will not mount. For a normal tower, stick with ATX.
How do I work out the right PSU for my build?
Add up the draw of your main parts, with the graphics card and CPU being the big ones, then add headroom and round up to a sensible wattage. A power supply calculator makes this easy, or you can use our rough guide: 650 to 750W for mid-range, 850 to 1000W for high-end, and 1000W and up for the very top cards. When unsure, a little extra wattage never hurts.
Is it safe to buy a cheap power supply?
The PSU is not the place to cut corners, because a poor unit can run hot, trip under load or, in the worst case, damage other parts. Stick to a reputable brand with an 80 Plus rating and a solid warranty. If you like to research first, a PSU tier list is a handy way to see which units are well built. A good quality power supply will happily carry over from one build to the next, so it is a sound long-term buy.