Advie regarding 800W Power Supply

[mrhercules]

Hi everyone.

I am building a system and i am at a cross roads regarding selection of power supply. Power supply i want to buy is Cooler master silent pro gold 800w. I want to know that does an 800W power supply is always taking 800 Watts of power or does it depends upon usage. i am concerned about electricity bill.


And secondly i may install another graphic card (Ati 6950 2gb) in crossfire may be 6 months or a year later. so is it okay if i install an 800W power Supply now

 

[abekl]

That's a good power supply. It can deliver 800 watts when needed, but only draws as much energy as is being called for. So a higher wattage power supply does not result in higher electricity bills.

There is no reason to wait on installing the power supply now even if it'll be a while before you get your second graphics card.

 

[mrhercules]

That's a good power supply. It can deliver 800 watts when needed, but only draws as much energy as is being called for. So a higher wattage power supply does not result in higher electricity bills.

There is no reason to wait on installing the power supply now even if it'll be a while before you get your second graphics card.

thanks man

 

[cmcghee358]

The 80 PLUS GOLD efficiency of that power supply will actually mean that it uses less electricity.

But it's also important for us to know your intended/actual system specs. Most high wattage PSUs have very low efficiency at lower wattages(20% range) in which case you might actually need a smaller wattage PSU depending on your system (20-80% wattage is the sweet spot)

 

[AdrianPerry]

800w is going to be perfect for Crossfire 6950's.

 

[mrhercules]

The 80 PLUS GOLD efficiency of that power supply will actually mean that it uses less electricity.

But it's also important for us to know your intended/actual system specs. Most high wattage PSUs have very low efficiency at lower wattages(20% range) in which case you might actually need a smaller wattage PSU depending on your system (20-80% wattage is the sweet spot)

My Specs are

Processor: Core i5 2500k
Motherboard: Z68 Deluxe
Ram: Vengence 8gb c9
Graphic Card: Ati 6950 256bit 2gb
hard Drive: 1tb western digital
Case: Cooler master HAF X

 

[cmcghee358]

Then yes, the 800W Silent Pro should be just about perfect. You most likely be idling around 300W with a peak around 700W. At GOLD efficiency you'd do well. Also the Silent Pro gold series has very good reviews.

 

[mrhercules]

Then yes, the 800W Silent Pro should be just about perfect. You most likely be idling around 300W with a peak around 700W. At GOLD efficiency you'd do well. Also the Silent Pro gold series has very good reviews.

thanks alot, appreciate your help

 

[mrhercules]

Best answer selected by MrHercules.

 

[Mousemonkey]

This topic has been closed by Mousemonkey