Top 7 400W Power Supply UK – Power Supplies

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1. SilverStone Technology

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SilverStone SST-ST40F-ES230, Strider Essential Series, 400W 80 Plus 230V EU ATX PC Power Supply, Low Noise 120mm

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SilverStone Technology #ad - 24/7 continuous power output with 40℃ operating temperature. High efficiency with 80 PLUS certification. Class-leading single +12V rail.
BrandSilverStone Technology #ad
ManufacturerSilverStone Technology #ad
Height8.6 cm (3.39 Inches)
Length14 cm (5.51 Inches)
Weight1.26 kg (2.78 Pounds)
Width15 cm (5.91 Inches)
Part Number30286
Model30286
Warranty36 Months

2. Be Quiet

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80 PLUS Gold, Black, be quiet! BN292 Pure Power 11 400W, power supply

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Be Quiet #ad - Dc-to-dc conversion for even tighter voltage regulation under heavy cross-loading conditions. Silence-optimized 120mm be quiet! fan. Stable operation thanks to Active Clamp and Synchronous Rectifier SR technology. Two strong 12V-rails. 80 plus gold efficiency up to 92%. Full suite of top safety features.
BrandBe Quiet #ad
ManufacturerBe Quiet! #ad
Height15 cm (5.91 Inches)
Length15 cm (5.91 Inches)
Weight1.9 kg (4.19 Pounds)
Width8.6 cm (3.39 Inches)
Part NumberBN292
ModelBN292
Warranty2 year manufacturer

3. APEVIA

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APEVIA SFX-AP400W Mini ITX Solution/Micro ATX/SFX 400W Power Supply

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APEVIA #ad - Cooling: 1 x 80mm automatically Thermal Sensing Fan. Apevia sfx-ap400w mini itx solution / micro atx / SFX 400W Power Supply. Dimension: 125mm x 100mm x 63. 5mm 4. 92" x 3. 94" x 2. 5" - l x w x H. Output: +3. 3v@12a, +5v@12a, -12v@03a, +12v@28a, +5vsb@2. 5a. All cables are Sleeved. Connectors: 1 x 20+4pin main power, 1 x 12vp4/p8, 2 x 4pin molex, 1 x PCIe 6+2Pin, 3 x SATA, 1 x 4pin Floppy.
BrandAPEVIA #ad
ManufacturerApevia #ad
Height6.35 cm (2.5 Inches)
Length12.7 cm (5 Inches)
Width10.16 cm (4 Inches)
Part NumberSFX-AP400W 
ModelSFX-AP400W 

4. CiT

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No Power Cable Included | Black, 70% Efficiency, PPFC, 12cm Cooling Fan, CiT Builder 500W Power Supply, Non Modular, An Excellent Entry Level Power Supply

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CiT #ad - Please note the cit 500w builder does not include a GPU 8 pin PCI-e connector. Mtbf > 50000hrs. Protection - over voltage protection ovp, over power Protection OPP, Under Voltage, Over Temperature Protection OTP & Short Circuit Protection SCP. Cooling system - 120mm sleeve bearing fan. Efficiency > 70%. Support - compliant with latest Intel standards ATX 12V, V2. 0 .
BrandCiT #ad
ManufacturerCiT #ad
Height8.6 cm (3.39 Inches)
Length14.2 cm (5.59 Inches)
Weight1.1 kg (2.43 Pounds)
Width15 cm (5.91 Inches)
Part Number500W-BUILDER-BLACK-V2
Model500W-BUILDER-BLACK-V2
Warranty12 Months Warranty

5. Antec

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Black, Antec VP400PC 400 W Power Supply Unit

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Antec #ad - A 120 mm fan for effective and quiet cooling. Crafted for quality, performance and incredible value. Excellent Efficiency.
BrandAntec #ad
ManufacturerAntec #ad
Height4.32 cm (1.7 Inches)
Length12.45 cm (4.9 Inches)
Weight1.75 kg (3.86 Pounds)
Width12.7 cm (5 Inches)
Part Number0-761345-06487-3
Model0-761345-06487-3

6. Corsair

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CORSAIR VS Series, 80+ White Certified, 400 Watt, Active PFC Power Supply, VS400

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Corsair #ad - Active pfc with full range AC input 100-240 VAC. Over-voltage protection, under-voltage protection, over power protection, short circuit protection, and over temperature protection provide maximum safety to your critical system components.

Safety and agency approvals: fcc, ctuvs, tuv, weEE and RoHS Due to limited certifications, ce, tuv-s, this product may not be sold in certain regions. Engineered to meet maximum power output at a 40°C temperature rating. Compatible with the latest atx12v v2. 31 and eps 2. 92 standards and is backward compatible with ATX12V 2. 2 and older systems. 120mm thermally controlled sleeve bearing fan.
BrandCorsair #ad
ManufacturerCorsair #ad
Height13.97 cm (5.5 Inches)
Length14.99 cm (5.9 Inches)
Weight1.77 kg (3.9 Pounds)
Width8.64 cm (3.4 Inches)
Part NumberCP-9020117-NA
ModelCP-9020117-NA

7. Be Quiet

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Black, Be Quiet T380698! 400W System Power 9

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Be Quiet #ad - Dc-to-dc technology for tight voltage regulation. Attractive black sleeved cables. Temperature-controlled 120mm fan reduces system noise. Stand-by drain of less than 015 watts. 80 plus bronze efficiency up to 89 Percent. Multi-gpu support with two PCIe connectors. Rock-solid stability with two strong 12V-rails.
BrandBe Quiet #ad
ManufacturerBe Quiet! #ad
Height8.6 cm (3.39 Inches)
Length14 cm (5.51 Inches)
Weight1.82 kg (4.01 Pounds)
Width15 cm (5.91 Inches)
Part NumberT380698
ModelT380698
Warranty3 Year Manufacturer