is a 760w psu enough for my build
- Thread starter maspembo
- Start date
Solution
With ease.
You will have left over power to spare
PC power supplies are rated on OUTPUT, not INPUT(they have an input rating, but it is not the wattage they advertise).
80+ has nothing to do with output power. It is about wasted input power needed to get to the rated output(heat generation) power(think about needing 100 watts to make 90 vs needing 200 watts to make 90. they both make 90).
So a 760 watt power supply that is 90 % efficient puts out 760 watts and a power supply that is 40% efficient puts out 760 watts. The 40% efficient one would be HUGE and need passive heatsinks and a vary powerful fan to keep it cool.
You will have left over power to spare
PC power supplies are rated on OUTPUT, not INPUT(they have an input rating, but it is not the wattage they advertise).
80+ has nothing to do with output power. It is about wasted input power needed to get to the rated output(heat generation) power(think about needing 100 watts to make 90 vs needing 200 watts to make 90. they both make 90).
So a 760 watt power supply that is 90 % efficient puts out 760 watts and a power supply that is 40% efficient puts out 760 watts. The 40% efficient one would be HUGE and need passive heatsinks and a vary powerful fan to keep it cool.
nukemaster
Titan
- Nov 23, 2004
- 19,626
- 6
- 74,965
With ease.
You will have left over power to spare
PC power supplies are rated on OUTPUT, not INPUT(they have an input rating, but it is not the wattage they advertise).
80+ has nothing to do with output power. It is about wasted input power needed to get to the rated output(heat generation) power(think about needing 100 watts to make 90 vs needing 200 watts to make 90. they both make 90).
So a 760 watt power supply that is 90 % efficient puts out 760 watts and a power supply that is 40% efficient puts out 760 watts. The 40% efficient one would be HUGE and need passive heatsinks and a vary powerful fan to keep it cool.
You will have left over power to spare
PC power supplies are rated on OUTPUT, not INPUT(they have an input rating, but it is not the wattage they advertise).
80+ has nothing to do with output power. It is about wasted input power needed to get to the rated output(heat generation) power(think about needing 100 watts to make 90 vs needing 200 watts to make 90. they both make 90).
So a 760 watt power supply that is 90 % efficient puts out 760 watts and a power supply that is 40% efficient puts out 760 watts. The 40% efficient one would be HUGE and need passive heatsinks and a vary powerful fan to keep it cool.
Ahmadjon
Splendid
- Oct 16, 2013
- 4,351
- 0
- 26,960
nukemaster :
With ease.
You will have left over power to spare
PC power supplies are rated on OUTPUT, not INPUT(they have an input rating, but it is not the wattage they advertise).
80+ has nothing to do with output power. It is about wasted input power needed to get to the rated output(heat generation) power(think about needing 100 watts to make 90 vs needing 200 watts to make 90. they both make 90).
So a 760 watt power supply that is 90 % efficient puts out 760 watts and a power supply that is 40% efficient puts out 760 watts. The 40% efficient one would be HUGE and need passive heatsinks and a vary powerful fan to keep it cool.
You will have left over power to spare
PC power supplies are rated on OUTPUT, not INPUT(they have an input rating, but it is not the wattage they advertise).
80+ has nothing to do with output power. It is about wasted input power needed to get to the rated output(heat generation) power(think about needing 100 watts to make 90 vs needing 200 watts to make 90. they both make 90).
So a 760 watt power supply that is 90 % efficient puts out 760 watts and a power supply that is 40% efficient puts out 760 watts. The 40% efficient one would be HUGE and need passive heatsinks and a vary powerful fan to keep it cool.
I know this, i mean about cheap PSU's that can't give true 760 watts
nukemaster
Titan
- Nov 23, 2004
- 19,626
- 6
- 74,965
Just wanted to make sure as MANY users thing that 80+ = more power when in fact it is all about wasted power not actual output power.
On the plus side. at least 80+ units have to go in for testing.
Many of the cheaper units are also older designs that do not have a heavy enough 12 volt rail to deal with modern hardware(like a 500 watt power supply with less 12 volt current than a moulder 300 watt unit).
It is very important to know that watts does not mean everything. It is how many watts at the voltage you need most(so a 500 watt power supply with 450 on 12 is good while a 500 watt with 200 watts on 12 is not so great for a modern system).
On the plus side. at least 80+ units have to go in for testing.
Many of the cheaper units are also older designs that do not have a heavy enough 12 volt rail to deal with modern hardware(like a 500 watt power supply with less 12 volt current than a moulder 300 watt unit).
It is very important to know that watts does not mean everything. It is how many watts at the voltage you need most(so a 500 watt power supply with 450 on 12 is good while a 500 watt with 200 watts on 12 is not so great for a modern system).
David Pheer
Honorable
- Feb 8, 2014
- 10
- 0
- 10,510
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