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Good PSU around $50?

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November 25, 2012 3:41:42 PM

Need a cheap PSU. thanks :) 

CPU: Intel i5 3570k will overclock to 4.5ghz

GPU: Radeon 7850

Motherboard: ASRock Pro3

CPU cooler: Hyper 212 plus

Crossfire: no

Ram: 2 x 4gb Corsair Vengeance





More about : good psu

November 25, 2012 4:00:32 PM

socialfox said:
This power supply should do nicely, and it is a pretty good power supply in terms of quality.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...


You think 450w is enough? I really don't have much experience with building computers so I don't know how much power will be enough :) 
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a b ) Power supply
a b à CPUs
November 25, 2012 4:09:38 PM

Well take a look at this:

3570k (stock) - 77 watts
HD 7850 - 130 watts (for combined 12v rail, 24 amps needed)
2x4gb- 10 watts per module (just an rough guess, could be less)
Fans - Barely use any watts, I would say 5 watts for the average fan.
DVD Drive - 30 watts at most (yours could use less)
Hard drive 15 watts

Just a rough estimation including a bunch of fans and other factors and you come near 250 watts. That leaves 200 watts for overclocking and a bunch of fans. The VP-450 has 2 12v rails of 18 amps per rail. That means 36 amps on both rails is more than enough for the HD 7850 that asks for 24 amps on a single rail.

Edit: Here is a power supply tier list
http://www.eggxpert.com/forums/thread/323050.aspx

The Antec VP-450 is a very good unit, it's in tier 2b which is pretty good.
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a b ) Power supply
a b à CPUs
November 25, 2012 4:12:48 PM

System with 3570k @ 4.6GHz at full load takes about 230W :)  Add GPU load to that.
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a b ) Power supply
a b à CPUs
November 25, 2012 4:21:01 PM

Even with 230 watts doesn't it come to around 425 watts? Anyways are you sure it uses 230 watts? I myself don't own it but it kind of seem awfully high.

If you are using a 3570k then use this:
http://www.extreme.outervision.com/psucalculatorlite.js...

And input your overclock and voltage and see how many watts it comes out to.
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a c 307 ) Power supply
a b à CPUs
November 25, 2012 4:24:42 PM

Airplane said:
Need a cheap PSU. thanks :) 

CPU: Intel i5 3570k will overclock to 4.5ghz

GPU: Radeon 7850

Motherboard: ASRock Pro3

CPU cooler: Hyper 212 plus

Crossfire: no

Ram: 2 x 4gb Corsair Vengeance


Hi - if you can stretch $5 I think this is a great deal:

http://www.newegg.com/Product/Product.aspx?Item=N82E168... Seasonic G series nets to $55 after mir

Tom

and 550w gives you plenty of headroom
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November 25, 2012 4:32:30 PM

Best answer selected by Airplane.
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November 25, 2012 4:33:59 PM

socialfox said:
Well take a look at this:

3570k (stock) - 77 watts
HD 7850 - 130 watts (for combined 12v rail, 24 amps needed)
2x4gb- 10 watts per module (just an rough guess, could be less)
Fans - Barely use any watts, I would say 5 watts for the average fan.
DVD Drive - 30 watts at most (yours could use less)
Hard drive 15 watts

Just a rough estimation including a bunch of fans and other factors and you come near 250 watts. That leaves 200 watts for overclocking and a bunch of fans. The VP-450 has 2 12v rails of 18 amps per rail. That means 36 amps on both rails is more than enough for the HD 7850 that asks for 24 amps on a single rail.

Edit: Here is a power supply tier list
http://www.eggxpert.com/forums/thread/323050.aspx

The Antec VP-450 is a very good unit, it's in tier 2b which is pretty good.

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a b ) Power supply
a b à CPUs
November 25, 2012 5:38:50 PM

Slight correction TDP is not the same as wattage. The TDP of the 3570k is 77, but it should use less in terms of wattage ( so less than 77 watts at stock speeds).
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