ATX 3.0 Power Supplies
Shop ATX 3.0 Power Supplies at Hardvance and shop power supplies designed for efficient delivery, dependable operation and long-term system stability. Compare wattage, efficiency ratings, modular designs and connector support to choose a PSU that fits your build with confidence. Shop trusted brands such as MSI, ASUS and be quiet! and more.
MSI MEG AI1300P 1300W ATX 3.0 PCIe 5.0 PSU Black
In stock
£279.28 inc VAT- 1300 W total power with 80 PLUS Platinum efficiency (92%) and Active PFC
- ATX 3.1 and PCIe 5.0 compliance with native 16-pin connector for up to 600W GPU power
- Fully-modular cabling with 24-pin ATX, 8x PCIe 6+2 pin, and 16x SATA connectors
- Active cooling via 12 cm fan with LCP blades and HDB bearing for quiet operation
- Comprehensive power protection (over current, over power, over voltage, short circuit, under voltage)
- Compact ATX form factor (150 x 86 x 160 mm) with Japanese 105°C capacitors
be quiet! PURE POWER 12 1000W ATX 3.0 PSU 80+ Gold Modular Black
In stock
£92.14 inc VAT- 1000 W ATX 3.1 PSU with PCIe 5.1 compatibility
- 12 cm rifle-bearing fan with 31.6 dB noise level
- 80 PLUS Gold efficiency at 90.6% with active PFC
- Non-modular cabling with 20+4 pin ATX and 12-pin PCIe connectors
- Comprehensive protection features including over current and surge protection
- 10-year warranty with MTBF of 100,000 hours
be quiet! Dark Power Pro 13 1300W ATX 3.0 Black PSU
In stock
£293.92 inc VAT- 1300W ATX 3.0 power supply with 1400W peak power for next-gen GPUs
- 80 PLUS Titanium certification delivering 94.5% efficiency
- Fully-modular cabling with 16 SATA and 6 PCIe 6+2 pin connectors
- 13.5cm FDB fan providing active cooling at 23.2 dB noise level
- Comprehensive protection features including over current, over voltage and overheating
- 10-year warranty with PCIe 5.0 compatibility for modern systems
be quiet! Dark Power Pro 13 1600W ATX 3.0 Black
In stock
£314.14 inc VAT- 1600 W total power with 1700 W peak
- 80 PLUS Titanium efficiency at 94.5%
- ATX 3.1 and PCIe 5.1 compatibility
- Active cooling with 13.5 cm FDB fan at 31.1 dB
- Fully-modular cabling with 16 SATA and 6 PCIe connectors
- 10-year warranty with comprehensive power protection
MSI MAG A850GL 850W ATX Power Supply
In stock
£114.94 inc VAT- 850W ATX 3.0 power supply with PCIe 5.0 compliance
- 80 PLUS Gold certified for high efficiency and lower energy consumption
- Fully modular design with flat cables for easy cable management
- Active cooling with 12 cm fan and fluid dynamic bearing
- Comprehensive protection mechanisms including over current, over power, over voltage, overheating, and short circuit
MSI MPG A850G 850W PSU
In stock
£105.28 inc VAT- 850 W ATX 3.0 power supply with PCIe 5.0 support
- 13.5 cm fan with 0% RPM mode for silent operation
- Fully modular design with flat black cables for easy cable management
- 100% Japanese 105°C capacitors with 10-year warranty
- Eight SATA, six PCIe 6+2 pin, and four Molex connectors
MSI MPG A1000G 1000W Power Supply
In stock
£134.27 inc VAT- 1000W ATX 3.0 power supply with PCIe 5.0 ready 16-pin connector
- 80 PLUS Gold certified for up to 90% efficiency
- Fully modular design with flat black cables for clean cable management
- Compact 150x150x86mm form factor with FDB bearing 13.5cm fan
- Supports NVIDIA GeForce RTX 40 Series with up to 600W PCIe 5.0 power delivery
Corsair HX1000i 1000W PSU
In stock
£205.68 inc VAT- 1000W ATX 3.0 power supply with 80 PLUS Platinum efficiency
- 140mm fluid dynamic bearing fan with Zero RPM mode for silent operation
- Fully modular cabling with three EPS12V connectors for modern GPUs</li
- PCIe 5.0 12VHPWR cable included for NVIDIA GeForce RTX 40 Series
- 100% Japanese 105°C electrolytic capacitors for long-term reliability
- CORSAIR iCUE software support for monitoring and fan control
ASUS Prime AP-750G 750W PSU ATX
In stock
£99.24 inc VAT- 80 PLUS Gold certification for up to 92% efficiency
- Active cooling with dual ball bearing fans for extended lifespan
- 750W total power output with ATX 3.0 compatibility
- Fully-modular cabling for easy installation and cable management
- Comprehensive protection features including over voltage and short circuit
- Black and white colour scheme for custom build aesthetics
- 8-year warranty for long-term reliability assurance
ASUS ROG Loki 850W Platinum White PSU
In stock
£208.40 inc VAT- 850W SFX-L power supply with 80 PLUS Platinum efficiency
- 120mm ARGB-illuminated fan with Aura Sync support
- Fully modular design for clean builds
- ATX 3.0 compatible with 16-pin PCIe Gen 5.0 connector
- 10-year warranty on core operation
ASUS ROG Loki SFX-L 750W Platinum PSU
In stock
£158.78 inc VAT- 750W SFX-L power supply with 80 PLUS Platinum efficiency
- ARGB-illuminated 120mm fan with Aura Sync compatibility
- Fully modular cabling for clean build management
- ATX 3.0 compliant with 16-pin PCIe Gen 5.0 support
- Comprehensive protection: OPP/OVP/UVP/SCP/OCP/OTP
- Compact 125x125x63.5mm form factor for SFF builds
ASUS ROG Loki 850W Platinum PSU
In stock
£198.48 inc VAT- 850W SFX-L form factor with ATX 3.0 compatibility
- 80 PLUS Platinum certified for high efficiency
- 120mm ARGB-illuminated fan with Aura Sync support
- Fully-modular cabling with 6 SATA, 4 Molex, 3 PCIe 8-pin connectors
- ROG heatsinks for extended 0dB operation and improved cooling
- Comprehensive protection: OPP/OVP/UVP/SCP/OCP/OTP
ASUS ROG Loki 1000W SFX-L PSU
In stock
£208.40 inc VAT- 1000W SFX-L power supply with 80 PLUS Platinum certification
- 12 cm fan with ARGB illumination and Aura Sync compatibility
- Fully modular cabling for clean build and flexible installation
- ATX 3.0 compliant with 16-pin PCIe Gen 5.0 connector for high-end GPUs
- Comprehensive protection suite: OPP/OVP/UVP/SCP/OCP/OTP
Antec Neo ECO 1000W Modular PSU
In stock
£114.25 inc VAT- 1000 W ATX 3.0 power supply with 80 PLUS Gold efficiency
- 12 cm top-mounted fan with active cooling and on/off switch
- Fully modular cabling with 20+4 pin ATX, 12 SATA, and 4 PCIe connectors
- 10-year warranty with comprehensive industrial-grade protections
- Compact 150 x 140 x 86 mm black chassis for versatile PC builds
Seasonic Focus GX 1000W ATX 3.0 PSU
Out of stock
£150.44 inc VAT- ATX 3.0 and PCIe 5.0 standards compliant
- 1000 W total power output with 80 PLUS Gold certification
- Digital Hybrid Fan Control for optimal cooling and reduced noise
- Fluid Dynamic Bearing (FDB) 13.5 cm fan for extended lifespan
- Fully-Modular cabling for flexible installations
- Comprehensive power protection features
- 10-year warranty period
Seasonic CORE GX ATX3 850W 80 PLUS Gold Fully Modular Power Supply Unit Black
Out of stock
£109.38 inc VAT- 850 W total power with 80 PLUS Gold certification
- ATX 3.1 and PCIe 5.1 compliant for modern systems
- Fully modular cabling for easy installation and cable management
- Active 12 cm fan with Smart and Silent Fan Control for optimal cooling
- Comprehensive power protection features including OVP, OPP, SCP
- Black finish for a sleek aesthetic
- 7-year worldwide manufacturer’s warranty
be quiet! Straight Power 12 ATX PSU 750W Black
Out of stock
£149.77 inc VAT- 750W total power with 80 PLUS Platinum certification for 92.9% efficiency
- ATX 3.1 standard with native 12V-2×6 and 4x PCIe 6+2-pin connectors for current and next-gen GPUs
- Silent Wings 13.5 cm fan with FDB bearing for virtually inaudible operation (20.8 dB noise level)
- Fully-modular cabling for improved airflow and easier installation
- Comprehensive power protection features including over current, over power, and short circuit
- High-quality Japanese 105°C capacitors for enhanced stability and lifespan
- 10-year manufacturer warranty
MSI MAG A850GL White 850W PSU
Out of stock
£146.59 inc VAT- 850 W ATX 3.0 compatible PSU with PCIe 5.0 support for RTX 40 series GPUs
- 80 PLUS Gold certified for high efficiency and lower energy consumption
- Fully modular cabling with flat cables for improved airflow and cable management
- 12 cm fluid dynamic bearing fan with active cooling and on/off switch
- Multiple protection mechanisms including over current, over voltage, and short circuit
MSI MAG A750GL 750W ATX Power Supply
Out of stock
£115.38 inc VAT- 750 W ATX 3.0 power supply with PCIe 5.0 support
- 80 PLUS Gold certified for higher efficiency and lower energy consumption
- Active cooling with 12 cm fan and fluid dynamic bearing
- Fully-modular design for reduced cable clutter and improved airflow
- Multiple protection mechanisms: over current, over power, over voltage, overheating, short circuit
be quiet! Straight Power 12 1200W PSU
Out of stock
£251.94 inc VAT- 1200W continuous power with 1270W peak capacity
- 13.5 cm Silent Wings fan with FDB bearing technology
- 80 PLUS Platinum certified with 92.4% efficiency
- Fully modular cabling with 9 SATA and 4 PCIe 6+2-pin connectors
- ATX 3.0 standard with 20+4 pin ATX motherboard connector
ATX 3.0 Power Supplies Buying Guide and FAQ
This ATX 3.0 Power Supplies range groups units by this feature. Below are the common questions.
What does modular mean on a power supply?
A modular PSU has this feature. It is a useful feature to look for when matching a unit to a modern build.
Do I need a modular power supply?
It depends on your case: SFX units are for small-form-factor builds, while a normal tower takes a standard ATX unit. Match the feature to your parts and case.
What wattage and rating should I pair with it?
Choose wattage around your graphics card, roughly 650 to 750W for mid-range and 850W and up for high-end, and aim for a reputable 80 Plus Gold unit. That combination suits most gaming PCs.