Is a 450 PSU enough for these components?

Badr Mahmoud Badr · Nov 15, 2013

AMD Phenom II X4 965 (stock)
ASUS M4A88T-M/USB3 - Motherboard
SAPPHIRE HD 5770 1GB GDDR5
2 HDD
2 Fans
2 Sticks of RAM (6 GB)
1 DVD/Writer Drive
is a 450 PSU enough?

linckmichael · Nov 15, 2013

I want to say you'll be fine. It depends what brand and model 450 PSU. But if you're looking to upgrade, you can use a bigger PSU so that you don't need to buy another one the next time you get one.

I suggest you to have a look here: http://www.eggxpert.com/forums/thread/323050.aspx

Supahos · Nov 15, 2013

Yes a quality 450W powersupply will be sufficient. A bargain basment one will not be. Anything rated 80+silver or gold will be good enough, and a name brand (seasonic, corsair, even rosewill 80 bronze would be fine). Just don't go for the elcheapo

Badr Mahmoud Badr · Nov 15, 2013

I have like this one

http://www.thermaltakeusa.com/products-model.aspx?id=C_00001992

is it good enough?

Tradesman1 · Nov 15, 2013

That has 30 amps across the 2 12 volt rails, think the 5770 calls for 34 amps

linckmichael · Nov 15, 2013

I'd look into Corsair, Seasonic, Antec.

Here's one: http://pcpartpicker.com/mr/newegg/seasonic-power-supply-s12ii430b

Supahos · Nov 15, 2013

That is a better option as it does have 34 amps on the 12v rails. Should be a better choice and do the job

ko888 · Nov 15, 2013

For a system using a single Radeon HD 5770 graphics card AMD specifies a minimum of a 450 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 24 Amps or greater and have at least one 6-pin PCI Express supplementary power connector.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

The Thermaltake Pure Power 450W (W0329) is only 355 Watts continuous power and 450 Watts peak power. This is the typical liar label crap that Thermaltake uses with their low end PSUs to deceive its customers. More realistically that PSU can only deliver a maximum of 325 Watts without going out of ATX12V specs.

The Amperages shown on the label are not continuous ratings, they're peak ratings.

Badr Mahmoud Badr · Nov 15, 2013

Thanks all I guess i will be getting a SeaSonic S12II Bronze 520W 80 PLUS PSU as soon as possible

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Is a 450 PSU enough for these components?

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