101 products found
Semi-passive - Product Filter
     
Seasonic Snow Silent 750W '80 Plus Platinum' Modular Po...

. What impresses people about the Snow Silent 750 is not only the eggshell white paint that provides enthusiasts with...

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Seasonic Snow Silent 750W '80 Plus Platinum' Modular Power Supply - White
 

10+ In stock

£169.99

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
 

6 In stock

£209.99

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

£124.99

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

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 -
 

9 In stock

£419.99

(2)
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

£314.99

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

£179.99

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)
 

4 In stock

£479.99

CoolerMaster MasterWatt 650 - 650W 80 Plus Bronze Semi Modular Power ...

MasterWatt 650, 650W, 80 Plus Bronze, Semi-fanless, Semi Modular, 5 Year Warranty

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CoolerMaster MasterWatt 650 - 650W 80 Plus Bronze Semi Modular Power Supply
 

4 In stock

£64.99

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

(1)
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

Super Flower Leadex II 650W 80 Plus Gold Modular Power Supply - White

Fully-Modular 80 Plus Gold 650 Watt Power Supply, Premium Electronics, 7 Year Guarantee and Quiet 135 mm FDB Fans

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Super Flower Leadex II 650W 80 Plus Gold Modular Power Supply - White
 

14 In stock

£99.95

(1)
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)
CoolerMaster MasterWatt 550 - 550W 80 Plus Bronze Semi Modular Power ...

MasterWatt 550, 550W, 80 Plus Bronze, Semi-fanless, Semi Modular, 5 Year Warranty

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CoolerMaster MasterWatt 550 - 550W 80 Plus Bronze Semi Modular Power Supply
 

Out of stock

£54.95

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

£174.95

(3)
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)
Corsair RMi Series RM850i '80+ Gold' 850W Modular Powe...

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 '80+ Gold' 850W Modular Power Supply (CP-9020083-UK)
 

6 In stock

£164.99

EVGA SuperNova G2 1600W '80 Plus Gold' Modular Power Supply (120-G2-1600-X3)

This power supply raises the bar with an 80 Plus Gold rating, with 1600W of continuous power, exceptional efficiency...

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EVGA SuperNova G2 1600W '80 Plus Gold' Modular Power Supply (120-G2-1600-X3)
 

10+ In stock

£379.99

(1)
Corsair Professional Series HX 1000W '80 Plus Platinum'...

Corsair HX Series, HX1000, 1000 Watt (1000W), Active PFC, 80 PLUS Platinum Certified, Fully Modular, 4th Generation...

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Corsair Professional Series HX 1000W '80 Plus Platinum' Modular Power Supply (CP-9020139-UK)
 

2 In stock

£199.99

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)
 

1 In stock

£259.99

(1)
EVGA SuperNova G2 1300W '80 Plus Gold' Modular Power Supply (120-G2-1300-X3)

This power supply raises the bar with an 80 Plus Gold rating, with 1300W of continuous power, exceptional efficiency...

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EVGA SuperNova G2 1300W '80 Plus Gold' Modular Power Supply (120-G2-1300-X3)
 

10+ In stock

£239.99

(1)
EVGA Supernova P2 650W 80 Plus Platinum Modular Power Supply

The unbeatable performance of the EVGA SuperNOVA P2 power supply line is now available in 650 watts.

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EVGA Supernova P2 650W 80 Plus Platinum Modular Power Supply
 

10+ In stock

£122.99

EVGA SuperNova G3 1000W 80 Plus Gold Modular Power Supply

EVGA SuperNOVA power supplies are well known for their extreme efficiency performance and reliability.

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EVGA SuperNova G3 1000W 80 Plus Gold Modular Power Supply
 

10+ In stock

£229.99

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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