71 products found
Semi-passive - Product Filter
     
Corsair RMx Series RMx750 750W '80 Plus Gold' Modular ...

CORSAIR RM750x series power supplies are built with the highest quality components to deliver 80 PLUS Gold efficient...

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Corsair RMx Series RMx750 750W '80 Plus Gold' Modular Power Supply (CP-9020179-UK)
 

Out of stock

£139.99

(2)
Asus ROG THOR 850W 80 Plus Platinum Modular Power Supply

ROG Thor series extends premium ROG brand to PSU product segment and features ROG heatsinks, dust-resistant...

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ASUS ROG THOR 850W 80 Plus Platinum Modular Power Supply
 

10+ In stock

£224.99

(1)
Corsair HXi Series HX1000i 1000W '80 Plus Platinum Digital ...

HXi Series power supplies give you extremely tight voltage control, virtually silent operation, and a fully modular...

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Corsair HXi Series HX1000i 1000W '80 Plus Platinum Digital Modular Power Supply (CP-9020074-UK)
 

10+ In stock

£239.99

(1)
Seasonic S12III 650W 80 Plus Bronze Power Supply

Powerful 650 Watt PSU, High 80 PLUS Bronze efficiency, Powerful 54A single rail, Automatic semi-passive mode, 5 Year...

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Seasonic S12III 650W 80 Plus Bronze Power Supply
 

Out of stock

£64.99

Asus ROG STRIX 650W 80 Plus Gold Modular Power Supply

ROG Heatsinks, Dual Ball Fan Bearings, 80 Plus Gold Certification, Fully Modular, Cosmetic Customisation, 10 Year...

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ASUS ROG STRIX 650W 80 Plus Gold Modular Power Supply
 

10+ In stock

£129.95

(1)
Corsair RMx Series RMx850 850W '80 Plus Gold' Modular ...

CORSAIR RM850x series power supplies are built with the highest quality components to deliver 80 PLUS Gold efficient...

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Corsair RMx Series RMx850 850W '80 Plus Gold' Modular Power Supply (CP-9020180-UK)
 

Out of stock

£154.99

Asus ROG THOR 1200W 80 Plus Platinum Modular Power Supply

ROG Thor series extends premium ROG brand to PSU product segment and features ROG heatsinks, dust-resistant...

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ASUS ROG THOR 1200W 80 Plus Platinum Modular Power Supply
 

Out of stock

£314.99

(1)
Corsair RMi Series RM850i 850W '80 Plus Gold' Modular ...

Corsair RMi series power supplies give you extremely tight voltage control, virtually silent operation, and a fully...

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Corsair RMi Series RM850i 850W '80 Plus Gold' Modular Power Supply (CP-9020083-UK)
 

10+ In stock

£189.95

Corsair HXi Series HX750i 750W '80 Plus Platinum Digital Mo...

HXi Series power supplies give you extremely tight voltage control, virtually silent operation, and a fully modular...

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Corsair HXi Series HX750i 750W '80 Plus Platinum Digital Modular Power Supply (CP-9020072-UK)
 

2 In stock

£189.95

(3)
Free Items 8Pack Super Flower Leadex Platinum ' Edition' 2000W F...

The collaboration of Super Flower with the world's number 1 overclocker, the multiple world record holder 'Ian...

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Super Flower Leadex Platinum '8Pack Edition' 2000W Fully Modular "80 Plus Platinum" Power Supply -
 

10+ In stock

£399.95

(3)
Corsair RMx Series RMx1000 1000W '80 Plus Gold' Modula...

Corsair RMx series power supplies give you extremely tight voltage control, quiet operation, Gold-certified...

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Corsair RMx Series RMx1000 1000W '80 Plus Gold' Modular Power Supply (CP-9020094-UK)
 

10+ In stock

£189.95

-4%
Silverstone SST-ST55F-PT 550W 80 Plus Platinum Modular Power Supply

Created to be the smallest fully modular ATX power supplies with 80 PLUS Platinum efficiency, the Strider Platinum...

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Silverstone SST-ST55F-PT 550W 80 Plus Platinum Modular Power Supply
 

20+ In stock

Was: £104.99 £99.95

Super Flower Leadex III 750W 80 PLUS Gold Modular Power Supply - Black

Fully modular 80 PLUS Gold PSU with 750 Watt output, Premium electronics, Two semi-passive levels, 7 Year warranty...

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Super Flower Leadex III 750W 80 PLUS Gold Modular Power Supply - Black
 

Out of stock

£109.99

Asus ROG STRIX 750W 80 Plus Gold Modular Power Supply

ROG Heatsinks, Dual Ball Fan Bearings, 80 Plus Gold Certification, Fully Modular, Cosmetic Customisation, 10 Year...

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ASUS ROG STRIX 750W 80 Plus Gold Modular Power Supply
 

Out of stock

£149.99

(1)
Corsair RMi Series RM650i 650W '80 Plus Gold' Modular ...

Corsair RMi series power supplies give you extremely tight voltage control, virtually silent operation, Fully modular...

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Corsair RMi Series RM650i 650W '80 Plus Gold' Modular Power Supply (CP-9020081-UK)
 

Out of stock

£149.99

(1)
Seasonic Prime TX-650 650W 80 Plus Titanium Modular Power Supply

Powerful 650 Watt power supply, 80 PLUS Titanium for maximum efficiency, Powerful single rail rated for 54 A, modular...

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Seasonic Prime TX-650 650W 80 Plus Titanium Modular Power Supply
 

Out of stock

£184.99

Phanteks Revolt X 1200W 80 Plus Platinum Modular Power Supply

Single PSU for dual motherboard systems, control each motherboard independently, manufactured from premium materials,...

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Phanteks Revolt X 1200W 80 Plus Platinum Modular Power Supply
 

Out of stock

£234.95

Seasonic S12III 550W 80 Plus Bronze Power Supply

Powerful 550 Watt PSU, High 80 PLUS Bronze efficiency, Powerful 45.5A single rail, Automatic semi-passive mode, 5...

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Seasonic S12III 550W 80 Plus Bronze Power Supply
 

Out of stock

£57.95

Seasonic Prime TX-750 750W 80 Plus Titanium Modular Power Supply

Powerful 750 Watt power supply, 80 PLUS Titanium for maximum efficiency, Powerful single rail rated for 62 A, modular...

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Seasonic Prime TX-750 750W 80 Plus Titanium Modular Power Supply
 

Out of stock

£204.95

Seasonic Prime TX-1000 1000W 80 Plus Titanium Modular Power Supply

Powerful 1,000 Watt power supply, 80 PLUS Titanium for maximum efficiency, Powerful single rail rated for 83 A,...

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Seasonic Prime TX-1000 1000W 80 Plus Titanium Modular Power Supply
 

Out of stock

£289.99

-8%
Silverstone SX800-LTI SFX-L Series - 800 Watt '80 Plus Titanium...

The SX800-LTI not only has unprecedented 800 watts of power output but also has the highest level of 80 PLUS...

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Silverstone SX800-LTI SFX-L Series - 800 Watt '80 Plus Titanium' Modular Power Supply
 

Out of stock

Was: £184.99 £169.99

be quiet! Straight Power 11 550W 80 Plus Gold Modular Power Supply

be quiet! Straight Power 11 550W raises the bar for systems that demand virtually inaudible operation without power...

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be quiet! Straight Power 11 550W 80 Plus Gold Modular Power Supply
 

Out of stock

£99.95

(3)
Free Items Super Flower Leadex Gold 1600W Fully Modular "80 Plus Gold"...

SuperFlower, one of the worlds leading power supply manufacturers have added the Leadex 1600W Gold to their range,...

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Super Flower Leadex Gold 1600W Fully Modular "80 Plus Gold" Power Supply - Black
 

10+ In stock

£299.99

(1)
Phanteks Revolt Pro 850W 80 Plus Gold Modular Power Combo Supply

Supports dual PSU configuration, 80 Plus gold accredited, Made from high quality components and materials

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Phanteks Revolt Pro 850W 80 Plus Gold Modular Power Combo Supply
 

10+ In stock

£124.99

(1)

Semi-passive Power Supplies

Power Supplies - The heart of every computer. Often overlooked and not given much thought when purchased, the power supply is one of the most important parts of your PC. Overclockers UK know that buying a reliable and good quality PSU is the key to a stable PC, which is why we offer a vast range of units from leading manufacturers such as SuperFlower, Seasonic, Cougar, EVGA, Corsair and be quiet!

Semi-Passive power supplies aim to offer the best of both worlds when it comes to silence and performance. They work by operating in a fanless mode up to a certain wattage load, allowing for completely silent operation. Once the unit hits the specified load (usually around 50%) the fan will spin up to cool the unit, although this is still barely audible. As these units become more efficient, the power supplies can operate at higher and higher loads without requiring the fan, leading to an extremely quiet experience. At OcUK we have a wide range of Semi-passive power supplies available, including the complete SuperFlower Leadex range, and selected EVGA SuperNova units.

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