I wanna ask whats the different between 80plus psu and the normal I can buy normal 500W psu for 30$ but the 80 plus for 90$
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TehNinjaCat
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- Apr 29, 2012
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JuX
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80 plus PSU means it gets over 80% of the labeled power. Contrary, those 30$ 500W PSU's aren't reliable as they deliver low amount of power to the components of your system that really need them, so you usually end up with ~250W (down from 500W) effective PSU. Of course, they are low quality and tend to burn out quite easily, taking your other system components to the grave along with them!
So, buy a quality brand PSU (Seasonic, Antec, Corsair, Zalman for example) and all your worries are gone!
So, buy a quality brand PSU (Seasonic, Antec, Corsair, Zalman for example) and all your worries are gone!
makkem
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- Jan 22, 2012
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Hi
No they will both give you an output of 500W but the cheap one will likely draw 750W from the mains supply and the 80 plus one about 600w.
The crucial factor here is that the extra wattage is dissipated in heat,so the cheap PSU has to get rid of 250W of heat which means the fan will be on full speed all the time and hence noisy and the internal components of the psu will run very hot ,shortening the lifespan.
The different designations refer to increasing efficiency of the PSU with bronze being lowest and platinum highest.
Bronze is 80% and platinum is 90%.
No they will both give you an output of 500W but the cheap one will likely draw 750W from the mains supply and the 80 plus one about 600w.
The crucial factor here is that the extra wattage is dissipated in heat,so the cheap PSU has to get rid of 250W of heat which means the fan will be on full speed all the time and hence noisy and the internal components of the psu will run very hot ,shortening the lifespan.
The different designations refer to increasing efficiency of the PSU with bronze being lowest and platinum highest.
Bronze is 80% and platinum is 90%.
PepitoTV
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Don't buy that! Just search for that brand on google and you'll find plenty of of horror stories about it.
As a general rule, the one component of a computer that you should never skimp on is the power supply, a cheap, poorly built one can just blow up and it's likely to take he fuses of your home or another components of your computer with it. Just stick with reliable manufacturers, even if they cost more.
For reference use this list: http://www.eggxpert.com/forums/thread/323050.aspx
As a general rule, the one component of a computer that you should never skimp on is the power supply, a cheap, poorly built one can just blow up and it's likely to take he fuses of your home or another components of your computer with it. Just stick with reliable manufacturers, even if they cost more.
For reference use this list: http://www.eggxpert.com/forums/thread/323050.aspx
JuX
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- Dec 1, 2013
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Well, I don't see the 80plus sign anywhere on that 800w PSU page..
If you really want it, you can buy it, but it's not a quality brand as the Corsair one, so I don't recommend it.
For example, my friend bought a 40$ 550W PSU. His system isn't using more than 250W at max power consumption. And then it smoked. Poor thing..
It's your choice!
If you really want it, you can buy it, but it's not a quality brand as the Corsair one, so I don't recommend it.
For example, my friend bought a 40$ 550W PSU. His system isn't using more than 250W at max power consumption. And then it smoked. Poor thing..
It's your choice!
JuX
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http://www.tomshardware.com/reviews/radeon-r9-280x-r9-270x-r7-260x,3635-18.html
This is the thread showing how much your GPU is using - let's say 150 at MAX. You should be doing well with that Alpine PSU then.
This is the thread showing how much your GPU is using - let's say 150 at MAX. You should be doing well with that Alpine PSU then.
PepitoTV
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I understand that you want to save money, but if you buy that Alpine PSU it's highly likely that it'll blow up, possibly taking parts or all of your computer with it.
For the dual R9 270x system, you need at least 600w. I'd recommend getting a little more than that. Given that you're on a budget, this one is an option:
http://pcpartpicker.com/part/corsair-power-supply-cx750m
For the dual R9 270x system, you need at least 600w. I'd recommend getting a little more than that. Given that you're on a budget, this one is an option:
http://pcpartpicker.com/part/corsair-power-supply-cx750m
ko888
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- Feb 18, 2009
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For a system using two AMD Reference Design Radeon R9 270X graphics cards in 2-way CrossFire mode AMD specifies a minimum of an 750 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 43 Amps or greater and have at least four 6-pin PCI Express supplementary power connectors.
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.
The Alpine 850W power supply unit, with its maximum combined +12 Volt continuous current rating of 42 Amps and with two 6-pin PCI Express supplementary power connectors, is insufficient to power your system configuration with two Radeon R9 270X graphics cards in 2-way CrossFireX mode. This is assuming that the Alpine 850W PSU is able to deliver what is specified on its label.
What you should be asking yourself is why does a reputable name brand 850W PSU, like a Seasonic 850W, have a +12 Volt continuous current rating of 70 Amps and comes with at least four 150W (6+2)-pin PCI Express supplementary power connectors when the Alpine 850W has only 60% of the Seasonic's +12V capacity and comes with only two 75W 6-pin PCI-E power connectors?
Clear and simple, you get what you pay for.
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.
The Alpine 850W power supply unit, with its maximum combined +12 Volt continuous current rating of 42 Amps and with two 6-pin PCI Express supplementary power connectors, is insufficient to power your system configuration with two Radeon R9 270X graphics cards in 2-way CrossFireX mode. This is assuming that the Alpine 850W PSU is able to deliver what is specified on its label.
What you should be asking yourself is why does a reputable name brand 850W PSU, like a Seasonic 850W, have a +12 Volt continuous current rating of 70 Amps and comes with at least four 150W (6+2)-pin PCI Express supplementary power connectors when the Alpine 850W has only 60% of the Seasonic's +12V capacity and comes with only two 75W 6-pin PCI-E power connectors?
Clear and simple, you get what you pay for.
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