ATX / PS2 Power Supply Units

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  1. New
    Asus TUF Gaming 450W 80Plus Bronze ATX Power Supply Unit
    $99
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  2. Cooler Master V 850W V2 Fully Modular 80 Plus Gold PSU
    $199
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  3. Cooler Master V 750W V2 White FullyModular 80Plus Gold PSU
    $189
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  4. Cooler Master V 650W V2 White FullyModular 80Plus Gold PSU
    $179
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  5. Cougar GEX850 850W 80+ Gold Full Modular Power Supply Unit
    $169
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  6. Adata 750W Core Reactor 80+ GOLD PSU
    $179
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  7. Adata 850W Core Reactor 80+ GOLD PSU
    $199
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  8. Corsair CXF 650W 80+ Bronze Modular RGB Power Supply - White
    $165
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  9. Save $20Sale
    Corsair CXF 550W 80+ Bronze RGB Modular Power Supply
    $118.79 Was $139
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  10. Corsair CXF 750W 80+ Bronze Fully Modular RGB Power Supply - White
    $179
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  11. Corsair CXF 750W 80+ Bronze RGB Fully Modular Power Supply
    $169
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  12. Save $21Sale
    Corsair CX 550W RGB 80+ Bronze Fully Modular Power Supply - White
    $127.63 Was $149
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  13. Corsair VS Series VS600 80+ Non-Modular ATX Power Supply
    $79
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  14. Corsair VS Series VS500 500W 80+ Non-Modular ATX PSU
    $69
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  15. Asus ROG Strix 1000W Fully Modular 80+ Gold ATX Power Supply Unit
    $349
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  16. DeepCool DQ750ST 750W 80 Plus Gold Power Supply
    $129
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  17. DeepCool 750W 80+ Gold Fully Modular Power Supply
    $177.87
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  18. DeepCool 650W 80+ Gold Fully Modular Power Supply
    $159
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  19. DeepCool 850W 80+ Gold Full Modular Power Supply
    $209
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  20. Evga 850W 80+ Gold Fully Modular ATX Power Supply Unit
    $209
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  21. Evga 750W 80+ Gold Full-Modular Power Supply Unit
    $179
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  22. Evga 650W 80+ Gold Full-Modular Power Supply Unit
    $169
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  23. Thermaltake Smart BM2 750W Semi-Modular 80 Plus Bronze Power Supply Unit
    $145
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  24. Thermaltake Smart BM2 650W Semi-Modular 80 Plus Bronze ATX Power Supply Unit
    $129
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  25. Thermaltake Smart BM2 550W Semi-Modular 80+ Bronze ATX Power Supply Unit
    $119
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  26. Save $30Sale
    MSI MPG 750W 80 Plus Gold Full Modular Power Supply Unit
    $199 Was $229
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  27. Save $10Sale
    Gigabyte 750W 80+ Gold ATX Fully Modular Power Supply
    $159 Was $169
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  28. Save 5%Sale
    Gigabyte 550W 80+ Bronze ATX Power Supply
    $65.71 Was $69
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Power supply units convert the AC power from the building into the correct voltage DC and deliver power to the components of a PC.

As time progresses, computer parts are becoming more energy efficient, thus the need for a high wattage PSU is slowly decreasing.

Power supplies are rated by numbers and colour using the voluntary “80 Plus” certification. This is a global standard that has been adopted by most manufacturers. Put simply, the higher the rating, the more energy efficient the power supply is, meaning money saved on power bills.

The order of preference is 80 Plus Platinum > 80 Plus Gold > 80 Plus Silver > 80 Plus Bronze > 80 Plus.

For high end systems, and for computers that are on 24/7, aim for a gold rated PSU.

For the everyday office worker or casual gamer doing a few hours a day, there’s nothing wrong with an 80 Plus or bronze/silver-rated PSU.

In terms of wattage, the majority of office PCs and gamers should use a power supply that is under 600W. It’s much better to invest in a higher rated PSU with lower wattage than the other way around. Only people running high-specced gaming systems with two graphics cards or enterprise parts would need to venture 750W or above.

Fully modular power supplies are excellent for those who want to perform neat cabling in their PC. This allows you to remove all unused cables. Non-modular or semi-modular PSUs will not allow you to remove some cables.

While power supplies are a boring component of a PC, it's one you want to get right (for reliability and longevity) as they can last a long time and possibly be re-used in future systems.