101 products found
Semi-passive - Product Filter
     
Corsair RMx 750w 80 Plus Gold Modular Power Supply (CP-9020179-UK)

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

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Corsair RMx 750w 80 Plus Gold Modular Power Supply (CP-9020179-UK)
 

10+ In stock

£124.99

(1)
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

£209.99

-9%
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
 

10+ In stock

Was: £314.99 £284.99

Free Items 8Pack Super Flower Leadex Platinum '8 Pack Edition' 2...

The collaboration of Super Flower with the world's number 1 overclocker, the multiple world record holder 'Ian "8...

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

10+ In stock

£419.99

(2)
Seasonic Focus Plus 650W 80 Plus Gold Modular Power Supply

If you are looking for your next compact system build ideas the FOCUS+ Gold 650 watt power supplies may be the ideal...

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Seasonic Focus Plus 650W 80 Plus Gold Modular Power Supply
 

20+ In stock

£94.99

-16%
Seasonic Focus Plus 850W 80 Plus Gold Modular Power Supply

If you are looking for your next compact system build ideas the FOCUS+ Gold 850 watt power supplies may be the ideal...

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Seasonic Focus Plus 850W 80 Plus Gold Modular Power Supply
 

10+ In stock

Was: £124.99 £104.99

Seasonic Focus Plus 750W 80 Plus Gold Modular Power Supply

If you are looking for your next compact system build ideas the FOCUS+ Gold 750 watt power supplies may be the ideal...

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Seasonic Focus Plus 750W 80 Plus Gold Modular Power Supply
 

10+ In stock

£104.99

Corsair AXi Series AX1200i Digital ATX '80 Plus Platinum�...

AXi Series, The AX1200i is certified 80 PLUS® Platinum, which results in lower heat generation and a quieter fan...

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Corsair AXi Series AX1200i Digital ATX '80 Plus Platinum' Modular Power Supply (CP-9020008-UK)
 

10+ In stock

£329.99

(7)
Corsair HXi Series HX850i 850W '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 HX850i 850W '80 Plus Platinum Digital Modular Power Supply (CP-9020073-UK)
 

10+ In stock

£194.99

(3)
Corsair AXi Series AX1600i 1600W 80 Plus Titanium Digital Modula...

AXi Series, The CORSAIR AX1600i is the ultimate digital ATX power supply, built using only the best components and...

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Corsair AXi Series AX1600i 1600W 80 Plus Titanium Digital Modular Power Supply (CP-9020087-UK)
 

6 In stock

£479.99

Corsair RMx 850w 80 Plus Gold Modular Power Supply (CP-9020180-UK)

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

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Corsair RMx 850w 80 Plus Gold Modular Power Supply (CP-9020180-UK)
 

6 In stock

£149.99

Seasonic Focus Plus 550W 80 Plus Gold Modular Power Supply

If you are looking for your next compact system build ideas the FOCUS+ Gold 550 watt power supplies may be the ideal...

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Seasonic Focus Plus 550W 80 Plus Gold Modular Power Supply
 

20+ In stock

£82.99

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)
 

10+ In stock

£174.95

(3)
-16%
Super Flower Leadex II 1000W 80 Plus Gold Modular Power Supply - Black

Fully-Modular 80 Plus Gold 1.000 Watt Power Supply, Premium Electronics, 7 Year Guarantee & Quiet 135 mm DBB Fans

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Super Flower Leadex II 1000W 80 Plus Gold Modular Power Supply - Black
 

10+ In stock

Was: £179.99 £149.99

Corsair Professional Series HX 1200W '80 Plus Platinum'...

Corsair HX Series, HX1200, 1200 Watt (1200W), Active PFC, 80 PLUS Platinum Certified, Fully Modular, 4th Generation...

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Corsair Professional Series HX 1200W '80 Plus Platinum' Modular Power Supply (CP-9020140-UK)
 

10+ In stock

£224.99

Seasonic Focus Plus 550W 80 Plus Platinum Modular Power Supply

The fully modular FOCUS+ Platinum 550 watt unit is based on the DC to DC Converter Design and its electric...

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Seasonic Focus Plus 550W 80 Plus Platinum Modular Power Supply
 

20+ In stock

£96.95

(1)
Corsair HXi Series HX1200i 1200W '80 Plus Platinum' Di...

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

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Corsair HXi Series HX1200i 1200W '80 Plus Platinum' Digital Modular Power Supply (CP-9020070-UK)
 

9 In stock

£259.99

(1)
be quiet! Straight Power 11 650W 80 Plus Gold Modular Power Supply

be quiet! Straight Power 11 650W raises the bar for systems that demand virtually inaudible operation without power...

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be quiet! Straight Power 11 650W 80 Plus Gold Modular Power Supply
 

10+ In stock

£114.95

(1)
Super Flower Leadex Platinum 550W Fully Modular "80 Plus Platinu...

Super Flower, one of the worlds leading power supply manufacturers have unleashed a full Leadex Platinum range, all...

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Super Flower Leadex Platinum 550W Fully Modular "80 Plus Platinum" Power Supply - Black
 

10+ In stock

£106.99

(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)
 

6 In stock

£234.95

(1)
Seasonic Focus Plus 750W 80 Plus Platinum Modular Power Supply

The fully modular FOCUS+ Platinum 750 watt unit is based on the DC to DC Converter Design and its electric...

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Seasonic Focus Plus 750W 80 Plus Platinum Modular Power Supply
 

6 In stock

£124.99

Seasonic Focus Plus 850W 80 Plus Platinum Modular Power Supply

The fully modular FOCUS+ Platinum 850 watt unit is based on the DC to DC Converter Design and its electric...

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Seasonic Focus Plus 850W 80 Plus Platinum Modular Power Supply
 

10+ In stock

£144.95

Super Flower Leadex II 850W 80 Plus Gold Modular Power Supply - Black

Fully-Modular 80 Plus Gold 850 Watt Power Supply, Premium Electronics, 7 Year Guarantee and Quiet 135 mm FDB Fans

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Super Flower Leadex II 850W 80 Plus Gold Modular Power Supply - Black
 

5 In stock

£129.95

(2)
Corsair RM Series RM1000X '80+ Gold' 1000W Modular Pow...

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

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Corsair RM Series RM1000X '80+ Gold' 1000W Modular Power Supply (CP-9020094-UK)
 

7 In stock

£184.99

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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