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Thread: Replacing 300w Psu With 450w Power Supply

  1. #1
    Join Date
    Dec 2008
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    26

    Replacing 300w Psu With 450w Power Supply

    hello ,

    i Have a Assembled Computer Which was Having 300w Power Supply , but 2 Days Back it Got Burned and i Lost my power Supply , Now When i Was about to Purchase a New one a Guy Offer 450 w Power Supply , My Cabinet is Atx , Now i am in Doubt that Can 450w power supply Cause any problem to my System , i Would like to know if it is possible to replace it with another box of the same type but 450W?

    Thank in advance

  2. #2
    Join Date
    Dec 2007
    Posts
    1,736

    Re: Replacing 300w Psu With 450w Power Supply

    Hello , it is Not about Buying a bigger or more powerful PSU , it would would not Help it in anyway but You Should look for a psu that Good in Quality let be Of 350 watts but you have to just look at what the PSU is made of and how it performs.. and the bigger fan might help

  3. #3
    Join Date
    Dec 2007
    Posts
    996

    Re: Replacing 300w Psu With 450w Power Supply

    Hello , I Would Recommend you Should Go for a Higher that 450 watt psu , may be 600 watt , Can be a really good investment , the Price Difference is Almost Negligible sometimes , it does not necessarily means that 600 watt Would use more power than a 300 watt PSU. If both are 80% efficient when operating at (for example) 200 watts than both will consume 250 watts with 50 watts going to waste heat. If power consumption is a concern focus on PSUs with a high efficiency rating. If the PSU does not specify efficiency then it's probably not one you want to buy. The advantage of the 600 watt model comes when you need more power than the smaller unit can provide. The advantage of the smaller unit is smaller price and less configured cooling so can be quieter without sophisticated fan controls.

  4. #4
    Join Date
    Oct 2004
    Posts
    1,342

    Re: Replacing 300w Psu With 450w Power Supply

    Hello , Your PC will be better protected with a more powerful, 450W , and it should be fine. I replaced a power supply of 225W, with 480W noname of, If chosen to replace a supply, well, watts are a mostly meaningless term. Relevant is current provided by each voltage. To make things more complex, one power supply rated at 350 watts from a responsible manufacturer will also be rated at 500 watts by manufacturers marketing to computer assembler. Just another reason why currents for each voltage are important. Watts is a meaningless term hyped (as if it means more quality) to those without electrical knowledge.

  5. #5
    Join Date
    Jan 2006
    Posts
    830

    Re: Replacing 300w Psu With 450w Power Supply

    Hello , it just means that if necessary it can provide more power, with more stable voltages support. This does not mean that these voltages will be high regardless of the power of your psu, they will be the same as but carefully regulated. Take a good brand Corsair style, if you can? It is always a good investment

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